SSA 2001
Program for the Annual Meeting
Cathedral Hill Hotel
San Francisco, California -- 17-20 April 2001

Presenter is indicated in bold.


Overview of Technical Program

Oral Sessions

 International RoomCalifornia RoomCathedral Hill A
17 April
7:00 p.m.ANSS Informational Meeting  
18 April
8:30 a.m.-
12:00 noon
Past and Future Large Earthquakes of the San Francisco Bay AreaProblems in Detection, Location, and Discrimination 
1:30 p.m.-
5:00 p.m.
Faulting and Earthquake Hazards in the Cascadia Forearc: New Paradigms IDevelopment and Use of Near-real-time Seismological Information 
19 April
8:30 a.m.-
12:00 noon
New Seismological and Engineering Perspectives from Recent Large EarthquakesStress Triggering: New Insights into Earthquake MechanicsFaulting and Earthquake Hazards in the Cascadia Forearc: New Paradigms II
2:30 p.m.-
6:00 p.m.
Earthquake Nucleation and Earthquake Sequences: Constraints from Seismology and AseismologyPaleoseismology for the Planet: Problems and Progress in Quantifying Recurrence on Great Faults of the World 
6:00 p.m.-
8:00 p.m.
26 January 2001 India "Republic Day" Earthquake  
20 April
8:30 a.m.-
12:00 noon
Earthquake Forecast and Hazard Models: Issues and Inputs for the Next GenerationSources, Structures, and Seismograms3D Earth Models at Regional and Global Scales
12:10 p.m.-
1:00 p.m.
 NASA Town Meeting on Global Earthquake Satellite System Study 
1:30 p.m.-
5:00 p.m.
The Rate Debate: Paleoseismic vs Geodetic Rates and Their Implications for the Earthquake CycleObservations and Predictions of Strong Ground Motion Wave Fields in a Hetereogeneous Earth


Poster Sessions
Posters will be up all day. Wednesday and Thursday times indicate when the presenting author will be available. For Friday posters the presenting authors should post the time(s) they will be available.

El Dorado Room
18 April, Wednesday 
8:30 a.m.-
12:00 noon
Development and Use of Near-real-tine Seismological Information A1-A13
 Strong Ground Motion and Instrumentation B1-B12
1:30 p.m.-
5:00 p.m.
Problems in Detection, Location, and Discrimination C1-C24
 Past and Future Large Earthquakes of the San Francisco Bay Area D1-D3
19 April, Thursday 
8:30 a.m.-
12:00 noon
Paleoseismology, Aseismology, and Strong Ground Motion A1-A24
2:30 p.m.-
6:00 p.m.
Stress Triggering: New Insights into Earthquake Mechanics B1-B6
 Faulting and Earthquake Hazards in the Cascadia Forearc: New Paradigms III C1-C21
20 April, Friday 
8:30 a.m.-
5:00 p.m.
Sources, Structures, and Seismograms A1-A21
 Earthquake Forecast and Hazard Models: Issues and Inputs for the New Generation B1-B14
 3D Earth Models at Regional Global Scales C1-C5
20 April, Friday 
8:30 a.m.-
5:00 p.m.
26 January 2001 India "Republic Day" Earthquake D1-D6
 28 February 2001 Nisqually, Washington Earthquake E1-E25



Wednesday a.m., 18 April 2001--International Room
Past and Future Large Earthquakes of the San Francisco Bay Area
Presiding: Michael S. Reichle, David P. Schwartz

8:30   Past and Future Large Earthquakes in the San Francisco Bay Area: In Search of a 2001-year Earthquake Catalog. Schwartz, D. P. and Seitz, G. G.

8:45   Evidence for Timing of Paleoearthquakes on the Southern Hayward Fault at Tyson Lagoon (Tule Pond), Northern California. Lienkaemper, J., Dawson, T., Personius, S., Seitz, G., Reidy, L., and Schwartz, D.

9:00   Holocene Seismicity of the Northern San Andreas Fault Based on the Turbidite Event Record. Goldfinger, C., Nelson, C. H., and Johnson, J. E.

9:15   Investigation of the West Napa Fault in the Northern San Francisco Bay Area. Wesling, J. R., Hanson, K. L., and Swan, F. H.

9:30   Tectonic Setting and Seismic Potential of the Blind Mt. Diablo Thrust Fault, Eastern San Francisco Bay Area, California. Unruh, J. R. and Sawyer, T. L.

9:45   Historical San Francisco Bay Area Earthquakes and Post-1989 Quiescence. Toppozada, T. R. and Branum, D.

10:00   Break

10:30   Aftershocks and Triggered Events of the Great 1906 San Francisco Earthquake, Based on Intensity Observations. Meltzner, A. J. and Wald, D. J.

10:45   Simulation of Long-period Near-field Ground Motion for the Great 1906 San Francisco Earthquake. Mavroeidis, G. P. and Papageorgiou, A. S.

11:00   Ground Motion in the Santa Clara Valley, California, from a M 7 South Hayward Fault Earthquake and Other Sources. Harmsen, S. C. and Frankel, A. D.

11:15   Implications of the 1999 San Francisco Bay Area Working Group on Earthquake Probabilities for Future Ground Motions and Expected Losses. Reichle, M. S., Petersen, M. D., Cao, T., Rowshandel, B., Franum, D., Frankel, A. D., and Toppozada, T. R.

11:30   Discussion: What Next and Where--Is the Bay Area Ready? Zoback, M. L., presiding.

Wednesday a.m., 18 April 2001--California Room
Problems in Detection, Location, and Discrimination
Presiding: Bill Walter, Craig Schultz

8:30   Open Seismic Data: Does It Help or Hurt a CTBT? Wallace, T. C., van der Vink, G., and Koper, K.

8:45   Seismic Event Location: Current Problems and Future Solutions. Richards, P. G., Khalturin, V. I., and Kim, W.-Y.

9:00   The Use of a 3D Model to Improve Regional Event Locations. Ritzwoller, M. H., Shapiro, N. M., Levshin, A. L., Engdahl, E. R., Barmin, M. P. and Villaseñor, A.

9:15   The Prototype International Data Center (PIDC) Approach to Automated Detection, Location, and Characterization of Seismic, Hydroacoustic, and Infrasonic Events. North, R. G.

9:30   A Comparison of Earthquake (Re)Location Methods. Richards-Dinger, K. B. and Ellsworth, W. L.

9:45   Calibration of IMS Hydroacoustic Stations in the Indian Ocean. Piserchia, P., Plantet, J.-P., Guerin, J.-M., Schindelé, Guilbert J., Cansi, Y., and Ruzie, G.

10:00   Break

10:30   The Role of Detection in Regional Seismic Event Discrimination: Examples from NTS. Walter, W. R., Rodgers, A. J., Mayeda, K., and Sicherman, A.

10:45   Optimization of Automatic Surface-wave Detection and Measurement. Stevens, J. L. and Adams, D. A.

11:00   Discrimination and Event Screening Using mb:Ms. Bowers, D. and Douglas, A.

11:15   Experimental Seismic/Acoustic Event-screening Criteria at the Prototype International Data Center. Fisk, M. D.

11:30   Application of Regularized Discrimination Analysis to Regional Seismic Event Identification. Anderson, D. N. and Taylor, S. R.

11:45   Some Scientifically Interesting Problems in CTBT Research. Blandford, R. R.

Wednesday a.m., 18 April 2001--El Dorado Room
Development and Use of Near-real-time Seismological Information

A1   An Advanced National Earthquake Monitoring System for Canada's Population Centers at Risk. Adams, J., Rogers, G. C., McCormack, D., Bent, A., and Cassidy, J. C.

A2   Integration of Seismic Monitoring Systems for Improved Earthquake Notification, Response, and Mitigation. Bittenbinder, A., Bogaert, B., Vidmar, L., McNamara, D., Benz, H., Johnson, C. E., Dietz, L., Kohler, W., Luetgert, J., Kragness, D., Lombard, P., and Lomax, A.

A3   IPAS: Portable IP-addressable Seismograph. Meremonte, M., Buland, R., and Overturf, D.

A4   Guidelines for Installation of ANSS Strong Motion Reference Stations. Nigbor, R. L., Stepp, J. C., and Shakal, A. F.

A5   Planning for the Advanced National Seismic System: Network Architecture and Interconnection. Gee, L. and ANSS Subcommittee on Network Architecture and Interconnection.

A6   ANSS Planning for the Mid-America Region. Withers, M. M. and the ANSS-MA Regional Advisory Committee.

A7   The California Integrated Seismic Network. Oppenheimer, D., Zoback, M. L., Gee, L., Romanowicz, B., Jones, L., Wald, D., Hauksson, E., Clayton, R., Shakal, A. F., Davis, J., and Eisner, R.

A8   Near-real-time Archiving and Distribution of Parametric and Waveform Data at the SCEDC. Hafner, K. and Clayton, R. W.

A9   A New Integrated ShakeMap Methodology for Northern California. Kaverina, A., Dreger, D., Gee, L., and Neuhauser, D.

A10   Implementing ShakeMap in Utah before the 2002 Winter Olympics. Pankow, K. L., Pechmann, J. C., Nava, S. J., and Arabasz, W. J.

A11   The Needs of Near-real-time Seismological Information in Oregon. Gentry, R., Darienzo, M., and Wang, Z.

A12   Using Near-real-time Ground Motion Data in Loss Estimation Modeling. Bausch, D. B.

A13   Evaluation of Damage Potential of Recorded Earthquake Ground Motion. Bozorgnia, Y. and Bertero, V. V.

Wednesday a.m., 18 April 2001--El Dorado Room
Strong Ground Motion and Instrumentation

B1   Self-leveling and Self-mass-centering Devices for Intermediate-period Seismometers. Liu, H.-P., Schmitz, G. P., Newell, C. D., Maier, R. L., Warrick, R. E., Sell, R. W., and Fletcher, J. B.

B2   Acceleration Offsets in Some FBA's during Earthquake Shaking. Shakal, A. F. and Petersen, C. D.

B3   Potential Advantages of a Strong Motion Velocity Meter as Opposed to a Strong Motion Accelerometer. Heaton, T. H. and Clinton, J. F.

B4   Estimation of Ground Motions at Golcuk during the 1999 Izmit, Turkey, Earthquake. Celebi, M. and Sekiguchi, H.

B5   Bayesian Estimations of 5% Damped Spectral Accelerations from MMI Data. Ebel, J. E. and Wald, D. J.

B6   Preliminary Updates of the Attenuation Relationships of Sadigh and Others. Chiou, B. and Youngs, R. R.

B7   Strong Motion and Attenuation Characteristics of the October 6, 2001 Tottori, Western Japan Earthquake Using K-NET and KIK-NET Acceleration Records. Shabestari, K. T., Matsuoka, M., and Yamazaki, F.

B8   Finite Source Model of the Chi-Chi Taiwan Earthquake Ground Motion Derived from Strong Motion and GPS Data. Chi, W.-C., Dreger, D., and Kaverina, A.

B9   A Single Planar Finite-fault Model of the 1999 M 7.7 Chi-Chi, Taiwan Earthquake Derived from the Inversion of Near-field Strong Ground Motions. Liu, P.-C. and Archuleta, R. J.

B10   A 3D Multifault Spontaneous Rupture Model of the 1999 Izmit, Turkey Earthquake. Harris, R. A., Dolan, J., Hartleb, R., and Day, S.

B11   Finite Source Inversion of the Loma Prieta Earthquake Incorporating Complex Structure and Geometry. Schmidt, D. A. and Dreger, D. S.

B12   Recovery of Coseismic Ground Motions with Permanent Displacement from the Strong-motion Data of the 1999 Chi-Chi, Taiwan Earthquake. Chiu, H. C.

Wednesday p.m., 18 April 2001--International Room
Faulting and Earthquake Hazards in the Cascadia Forearc: New Paradigms I
Presiding: Tom Brocher, Ivan Wong

1:30   Seismicity at the North End of Cascadia. Rogers, G. R.

1:45   Earthquake Hazards Appraisal for In-slab Earthquakes in Cascadia and Latin America: Challenges and Prospects. Kirby, S. H.

2:00   Cascadia Slab Structure and Deep Earthquakes. Preston, L. A., Creager, K. C., Crosson, R. S., Van Wagoner, T. M., Trehu, A. M., Brocher, T. M., and Fisher, M. A.

2:15   Earthquakes with High Apparent Stresses within the Gorda Plate and Their Contribution to the Seismic Hazard of the Cascadia Subduction Zone. McGarr, A. and Choy, G. L.

2:30   The Magnitude 6.8 Nisqually Earthquake of February 28, 2001: Seismological Aspects. Crosson, R. S., Creager, K. C., Malone, S., Thomas, G., Ludwin, R., Qamar, A., Weaver, C. S., and Pratt, T.

2:45   Ground Failures Produced by the Nisqually Earthquake. Troost, K. G., Haugerud, R. A., Walsh, T. J., Harp, E. L., Booth, D. B., Steele, W. P., Wegmann, K. W., Pratt, T. L., Sherrod, B. S., and Kramer, S. L.

3:00   Break

3:30   Overview of Strong-motion Recordings of the M 6.8 Nisqually, Washington, Earthquake. Frankel, A., Carver, D., Malone, S., Thomas, G., Weaver, C., Stephens, C., Porcella, R., Benz, H., Filson, J., Wong, I., Norris, R., Petersen, M., and Harmsen, S.

3:45   Rate of Large Crustal Earthquakes in Puget Sound: S. Georgia Strait Estimated from GPS Measurements of N-S Crustal Shortening and from Earthquake Catalogue Statistics. Hyndman, R. D., Weichert, D. H., Rogers, D. C., and Mazzotti, S.

4:00   Cascadia Margin Kinematics Highlight Strain Gradients in Puget Sound and Northern California. Miller, M. M., Johnson, D. J., Rubin, C. M., Dragert, H., Wang, K., Qamar, A., and Goldfinger, C.

4:15   Campaign GPS Measurements in Western Washington. Qamar, A. and Ning, R.

4:30   What Goes Down, Comes Up: Flexural Origin of the Puget Basins and Tectonic Implications. Crosson, R. S. and Symons, N. P.

4:45   Finding Faults with LIDAR in the Puget Lowland. Haugerud, R. and Weaver, C. S.

Wednesday p.m., 18 April 2001--California Room
Development and Use of Near-real-time Seismological Information
Presiding: Lind S. Gee, David J. Wald

1:30   Caltech/USGS TriNet: Modern, Digital Multifunctional Real-time Seismic Network for Southern California. Hauksson, E., Busby, R., Goltz, J., Hafner, K., Heaton, T., Hutton, K., Kanamori, H., Polet, J., Small, P., Jones, L. M., Given, D., and Wald, D.

1:45   New Japanese Uphole/Downhole Strong-motion Observation Network: KIK-NET. Aoi, S., Obara, K., Hori, S., Kasahara, K., and Okada, Y.

2:00   ShakeMap 2001: A National Perspective. Worden, C. B. and Wald, D. J.

2:15   Implementing ShakeMap in Northern California. Boatwright, J., Bundock, H. G., Seekins, L. C., Oppenheimer, D. H., Luetgert, J. H., Dietz, L. D., Evans, J. R., Fogleman, K. A., Gee, L., Dreger, D., Shakal, A. F., Graizer, V., McLaren, M. K., Wald, D. J., and Worden, C. B.

2:30   Using Geocoding to Recover Detailed Shaking Information from the Community Internet Intensity Maps. Wald, D. J. and Adams, E. R.

2:45   Federal Emergency Management Agency HAZUS Operations Plan for Production of Loss-estimation Maps Following Significant Earthquakes. Murray, J. P., Nishenko, S., Buika, J., Sipkin, S., Person, W., and Lahr, J.

3:00   Break

3:30   Near-real-time Vulnerability Assessment. Iglesias, J. J., Gomez, B. G., Rivero, F. J. A., and Cande, I.

3:45   GIS Map Server Application to Display Earthquakes and Utility Facilities for Postearthquake Emergency Response. McLaren, M. K.

4:00   NRC Emergency Response to a Damaging Earthquake. Ibrahim, A. K. and Congel, F. J.

4:15   California's Postearthquake Information Clearinghouse: A User of Near-real-time Seismic Information. Smith, T. C. and Toppozada, T. R.

4:30   An Envelope-based Methodology for Early Warning. Cua, G. B. and Heaton, T. H.

4:45   Seismo-Watch Earthquake News and Information Services. Watson, C. P.

Wednesday p.m., 18 April 2001--El Dorado Room
Problems in Detection, Location, and Discrimination

C1   Lg Attenuation in the Eastern Tibetan Plateau. Xie, J.

C2   Characteristics of Lg Attenuation in Tibet. Fan, G.-W. and Lay, T.

C3   Intrinsic Attenuation in Fractured Crust: Manifestation of Interstitial Fluid in the Bandwidth of Regional Phases. Rouleau, P.

C4   The Use of Radiated Seismic Energy and mb as a Potential Regional Seismic Discriminant. Ichinose, G. A., Woods, B. B., and Saikia, C. K.

C5   An Analysis of Announced Yields and Reported Magnitudes for Underground Nuclear Explosions at Novaya Zemlya. Khalturin, V. I. and Richards, P. G.

C6   MS-mb(Lg) Scaling from Regional Observations of the Umbria-Marche Earthquake Sequence Recorded by the Grafenberg Array and the German Regional Seismic Network (GRSN). Patton, H. J. and Schlittenhardt, J.

C7   A Transportable and Stable Regional Magnitude Based on Coda Envelopes. Mayeda, K., Hofstetter, A., O'Boyle, J., Al-Yazjeen, T., Walter, W. R., and Phillips, W. S.

C8   Separation of Source, Path, and Site Effects Using Regional Coda in Central Asia. Phillips, W. S., Hartse, H. E., and Mayeda, K.

C9   Validation of a 3D Upper Mantle Model of Eurasia and Location Experiments Using Reference Events Derived by Cluster Analyses. Engdahl, E. R., Levshin, A., and Ritzwoller, M. A.

C10   Validation and Generation of Reference Events by Cluster Analysis. Bergman, E. A. and Engdahl, E. R.

C11   Using Shear-wave Travel-time Correction Surfaces to Improve Regional Seismic Location in China. Begnaud, M. L., Velasco, A. A., and Steck, L. K.

C12   On the Use of Kriged P-wave Travel-time Correction Surfaces for Seismic Location. Steck, L. K., Velasco, A. A., and Begnaud, M.

C13   Calibrating Seismic Locators to Enhance International Monitoring of Nuclear Explosions. Schultz, C. A., Flanagan, M. P., Hanley, W. G., Myers, S. C., and Swenson, J. L.

C14   Statistical Characterization of Reference Event Accuracy. Myers, S. C. and Schultz, C. A.

C15   Testing 3D Crust and Upper Mantle Velocity Models to Improve Regional Seismic Event Location in the Middle East. Flanagan, M. P., Myers, S. C., Pasyanos, M. E., and Schultz, C. A.

C16   On the Importance of Multidimensional Wave Propagation Phenomena for Regional Test Ban Monitoring. Goldstein, P.

C17   The San Francisco Bay Region Historical Earthquake Reanalysis Project: A Progress Report and Locating Pre-1960 Instrumentally Recorded Earthquakes Using a Fuzzy-logic-based Algorithm. Uhrhammer, R. A.

C18   A Numerical Comparison of the Joint Hypocentral Determination in Central Mexico. Ortega, R., Velazquez, L., Argaez, M., and Quintanar, L.

C19   Underwater Explosions and the Sinking of the Kursk: An Experiment in Regional Calibration. Paquette, A. M., Wallace, T. C., and Koper, K.

C20   Subspace Techniques for Detecting Repeating Events. Harris, D. B.

C21   Generation of Lg from Underground Explosions: Rg-to-S Scattering and Discrimination between Small Events. Gupta, I. N., Chan, W. W., and Wagner, R. A.

C22   Mathematical Modeling of Seismic Effects from Underground Explosions with a Star-shaped System of Separation Cracks. Bykovtsev, A. S. and Katz, A. A.

C23   Removing Horizontal Broadband Tilt Noise Using a New Beam-balance Tiltmeter That Is Insensitive to Horizontal Acceleration. Morrissey, S.-T.

C24   Ground Truth Locations: A Synergy between Seismic and INSAR Techniques. Saikia, C. K., Ichinose, G. A., and Chen, J.

Wednesday p.m., 18 April 2001--El Dorado Room
Past and Future Large Earthquakes of the San Francisco Bay Area

D1   Quaternary Investigations to Evaluate Seismic Source Characteristics of the Frontal Thrust Belt, Palo Alto Region, California: Status Report of Ongoing Morphometric and Geochronologic Studies. Hanson, K. L., Wesling, J. R., Angell, M. M., and Bullard, T. F.

D2   Fault Rupture Hazard at Memorial Stadium, University of California, Berkeley. Wells, D. L., Swan, F. H., Hall, N. T., Williams, P. L., and Doolin, D.

D3   Improved Ground Motion Hazard Estimates for the San Francisco Bay Area. Wells, D. L., Youngs, R. R., Hanson, K. L., Angell, M. M., Wesling, J. R., Kulkarni, V., and Preiss, J.

Thursday a.m., 19 April 2001--International Room
New Seismological and Engineering Perspectives from Recent Large Earthquakes
Presiding: Kuo-Fong Ma, Mehmet Celebi

8:30   Estimation of Strong Ground Motion at Damaged Areas during the Kocaeli, Turkey Earthquake of August 17, 1999, Using the S-wave Velocity Structures Determined by Array Observations of Microtremors. Kudo, K., Kanno, T., and Ozel, O.

8:45   Earthquake Behavior of the 2,300-meter-long Bolu Viaduct to 12 November 1999 Duzce Earthquake. Yilmaz, Ç. and Erdik, M. P.

9:00   The Effect of Soil Conditions on Building Damage in Adapazari during the 17 August 1999 Kocaeli Earthquake. Sucuoglu, H., Bakir, S. and Yilmaz, T.

9:15   Fault Dynamic Behavior of the 1999 Chi-Chi, Taiwan Earthquake (Mw 7.6). Ma, K. F., Brodsky, E. E., Mori, J., and Song, T. A.

9:30   Fault Geometry and Slip Distribution of the 1999 Chi-Chi, Taiwan Earthquake from Inversion of GPS Data. Johnson, K. M., Segall, P., Hsu, Y. J., and Yu, S. B.

9:45   Postseismic Slip Following the 1999 Chi-Chi, Taiwan Earthquake. Bechor, N., Segall, P., Johnson, K. M., Hsu, Y. J., and Yu, S. B.

10:00   Break

10:30   Nonlinear Soil Response during the 1999 Chi-Chi, Taiwan Earthquake. Wen, K. L., Yeh, C. T., and Chang, T. M.

10:45   From the Taiwan Chi-Chi Earthquake to the Specification of Design Earthquake in Building Codes. Hwang, H.

11:00   Implications of Recent Large Earthquakes for the Magnitude Scaling of Near-fault Ground Motions. Somerville, P. G.

11:15   Engineering Implications of Recent Near-field Ground-motion Observations for Flexible Structures. McCallen, D. B., Hutchings, L. J., Larsen, S. C., Astaneh-Asl, H., and Celebi, M.

11:30   Development of Acceleration Map and Response Spectra for Seismic Hazard Assessment of Peninsular Malaysia. Adnan, A. B. and Yusoff, N. A.

11:45   An Application of the Geohazards International Earthquake Safety Initiative: The January 13, 2001 San Salvador Earthquake. Dwelley-Samant, L., Tucker, B., Villacis, C., Young, A., Bommer, J. J., de Hasbun, P. M., and Ventura, C.

Thursday a.m., 19 April 2001--California Room
Stress Triggering: New Insights into Earthquake Mechanics
Presiding: Ruth Harris, Roland Bürgmann

8:30   Toward Understanding Disagreements among Statistical Studies of Stress Transfer. Anderson, G.

8:45   Rupture Directivity Points at Earthquake-triggering Mechanisms. Gomberg, J., Bodin, P., Rabak, I., and Reasenberg, P.

9:00   Compaction-induced Pore Pressure Change: A Mechanism to Explain Dynamic Earthquake Triggering. Beeler, N. M., Blanpied, M. L., Marone, C., and Richardson, E.

9:15   Remotely Triggered Earthquakes in Interplate and Intraplate Regions: Observations and Interpretation. Hough, S. E. and Kanamori, H.

9:30   3D Simulations of Rupture of Discontinuous Thrust Faults with Orthogonal Segmentation. Magistrale, H. and Day, S.

9:45   The Dynamics of Two Nonparallel Thrust Fault Segments. Oglesby, D. D., Day, S. M., and O'Connell, D. R. H.

10:00   Break

10:30   Coseismic and Postseismic Stress Changes in a Subducting Plate: Possible Stress Interactions between Interplate Thrust and Intraplate Normal-faulting Earthquakes. Mikumo, T., Yagi, Y., Singh, S. K., and Santoyo, M. A.

10:45   Delayed but Vigorous Off-fault Aftershocks Triggered by the 6 October 2001 M = 7.3 Tottori-Ken-Seibu Earthquake, Japan as a Test of Rate/State Friction. Toda, S., Tsuruoka, H., and Stein, R. S.

11:00   Interactions between the Landers and Hector Mine Earthquakes from Space Geodesy, Boundary Element Modeling, and Time-dependent Friction. Price, E. J. and Bürgmann, R.

11:15   Viscoelastic Stress Triggering of the 1999 Hector Mine Earthquake by the 1992 Landers Earthquake. Zeng, Y.

11:30   Incorporating Layered Elastic Structure in Earthquake Models: Effects on Inversions for Slip, Coulomb Stress Change, and Rheological Parameters. Hearn, E. H.

11:45   Accelerating Seismicity and Stress Accumulation before Large Earthquakes. Bowman, D. D. and King, G. C. P.

Thursday a.m., 19 April 2001--Cathedral Hill A
Faulting and Earthquake Hazards in the Cascadia Forearc: New Paradigms II
Presiding: Tom Brocher, Ivan Wong

8:30   New Insights on Crustal Faults in the Puget Lowland, Washington from the SHIPS, Gravity, and Aeromagnetic Surveys. Brocher, T. M., Parsons, T., Blakely, R. J., Wells, R. E., and Fisher, M. A.

8:45   Is the Tacoma Geophysical Anomaly (Puget Lowland, Washington) Characterized by Two Distinct Segments? Implications for Earthquake Hazard Assessment. Johnson, S. Y., Dadisman, S. V., and Stephenson, W. J.

9:00   Surface Rupture in the Seattle Fault Zone near Bellevue, Washington. Sherrod, B. L., Haeussler, P. J., and Haugerud, R.

9:15   Test for Late Holocene Displacement on the Southern Whidbey Island Fault Zone, Northern Puget Lowland, Washington. Kelsey, H. M. and Sherrod, B. L.

9:30   Preliminary Constraints on Shortening Rates Transverse to the Cascadia Subduction Zone, Coastal Washington. McCrory, P. A., Foster, D. S., Danforth, W. W., and Wilson, D. S.

9:45   Coastal and Offshore Crustal Faulting in Cascadia: Is It Real and What are the Implications for Society? Yeats, R. S., McNeill, L. C., and Goldfinger, C.

10:00   Break

10:30   Finding Quaternary Faults in the Willamette Lowland: Are They Dead or Just Hiding? Madin, I. P. and Graham, G. B.

10:45   Holocene Seismicity of Cascadia Subduction Zone Based on the Turbidite Event Record. Goldfinger, C., Nelson, C. H., and Johnson, J. E.

11:00   Sand Sills in Huge Cores along the Columbia River, Washington. Atwater, B. F., Haraguchi, T., Takada, K., Satake, K., Shimokawa, K., and Baker, D.

11:15   Amplification of Seismic Waves by the Seattle Basin, Washington State. Pratt, T. L., Brocher, T. M., Weaver, C. S., Miller, K. C., Snelson, C. M., Trehu, A. M., Creager, K. C., and Crosson, R. S.

11:30   Uncertainty in Ground Shaking Hazard in Seattle and Portland from Great Earthquakes on the Cascadia Subduction Zone. Campbell, K. W., Thenhaus, P. C., Hampson, D., and Barnhard, T.

11:45   The Challenges of Incorporating Crustal Faults into Seismic Hazard Analysis in the Pacific Northwest. Wong, I. G. and Thomas, P. A.

Thursday a.m., 19 April 2001--El Dorado Room
Paleoseismology, Aseismology, and Strong Ground Motion

A1   Paleoseismology of Reverse Faults: Problems and Tactics. Okumura, K., Kumahara, Y., and Nakata, T.

A2   The Relationship of Fault Length to Fault Slip Rate for Normal and Strike-slip Faults. Briggs, R. W. and Wesnousky, S. G.

A3   The Neotectonic Character of the Granite Springs Valley and Bradys Fault Zones, Western Basin and Range. Trevor, M. S. and Wesnousky, S. G.

A4   Active Tectonics of Northeastern Sonora, Mexico (Southern Basin and Range Province) and the 3 May 1887 Mw = 7.4 Earthquake. Suter, M. and Contreras, J.

A5   Preliminary Paleoseismic and Geophysical Investigation of the North Farrenburg Lineament, Farrenburg, Missouri: Deformation Associated with the New Madrid North Fault? Baldwin, J. N., Barron, A. D., Kelson, K. I., Harris, J. B., and Cashman, S. M.

A6   High-resolution Seismic-reflection Imaging of Shallow Deformation beneath the Northeast Margin of the Manila High at Big Lake, Arkansas, New Madrid Seismic Zone, Central USA. Odum, J. K., Stephenson, W. J., and Williams, R. A.

A7   Progress on the Memphis-Shelby County Seismic Hazard Mapping Project. Gomberg, J. and Memphis-Shelby County Seismic Hazard Working Group

A8   Spatial and Temporal Characteristics of Paleoseismic Features in the Southern Terminus of the New Madrid Seismic Zone in Eastern Arkansas. Al-Shukri, H. J., Lemmer, R. E., Mahdi, H. H., and Connelly, J. B.

A9   Source Parameters of Large, Historical Earthquakes in Baffin Bay, Canada. Bent, A. L.

A10   Exposures of the Main Frontal Thrust, Nepal: Evidence of Late Holocene Rupture and Potential for Future Paleoseismic Study. Yule, D., Lave, J., Attal, M., and Sapkota, S.

A11   Shallow Structural Geometry of the Sierra Madre Oriental Fold-thrust Belt and Juxtaposed Mexican Volcanic Arc: A Continental Subduction Naïve Model. Carrillo, M.

A12   An Industry Program at the Mid-America Earthquake Center Funding Earthquake Research. Beavers, J. E. and Nichols, J. M.

A13   Dominant Frequencies of the Ground-motion Accelerations in Buenos Aires City, Argentina Caused by Distant Seismic Events, Compared with the Fundamental Natural Frequencies of Their Tall Buildings. Sabbione, N. C., Carmona, J. S., Pinciroli, R., and Palau, R. L.

A14   Ground-motion Scaling Relationships for Mainland Greece and Crete. Pino, N. A, Malagnini, L., Akinci, A., Scognamiglio, L., Herrmann, R. B., Stavrakakis, G., and Chouliaras, G.

A15   Ground-motion Site-response Analysis in the Anchorage Basin: 1D Approach. Martirosyan, A. H., Biswas, N., and Dutta, U.

A16   The Study of Attenuation Characteristics of Direct S and Coda Waves in South-central Alaska from the Strong-motion Network Data. Dutta, U., Martirosyan, A. H., Biswas, N. N., and Papageorgiou, A.

A17   On the Topographic Site Effects Understanding Using a Curvilinear Finite Differences Modeling and Underground and Surface Instrumentation of Rustrel Mountain, France. Desveaux, F. and Rodrigues, D.

A18   Temporal Changes in Fault-zone-guided Waves at Parkfield. Korneev, V. A., McEvilly, T. V., and Nadeau, R. M.

A19   Shallow Seismic Profiling of the Exhumed Punchbowl Fault Zone, Southern California. Li, Y.-G., Chester, F. M., and Vidale, J. E.

A20   Characterization of Heterogeneous Spatial Stress and Slip Distribution along the Fault Surface for the 1992 Landers, California Earthquake. Vidal, V., LaVallée, D., and Archuleta, R. J.

A21   TriNet Strong-motion Data from the M 7.1 Hector Mine, California Earthquake of October 16, 1999. Graizer, V., Shakal, A., Scrivner, C., Hauksson, E., Polet, J., and Jones, L.

A22   Mathematical Models of Nucleation Dynamic Rupture with Complex Nonlinear Geometry. Bykovtsev, A. S. and Katz, A. A.

A23   Interaction Models for Arbitrarily Oriented Fault Systems in Earthquake Sequences Forecasting. Bykovtsev, A. S. and Katz, A. A.

A24   Tornillo: Characteristics and Source. Hellweg, M., Seidl, D., Gomez, D., and Ortega, A.

A25   A Silent Slip Event on the Deeper Cascadia Subduction Interface. Dragert, H., Wang, K., and James, T. S.

Thursday p.m., 19 April 2001--International Room
Earthquake Nucleation and Earthquake Sequences: Constraints from Seismology and Aseismology
Presiding: Gregory C. Beroza, Paul G. Silver

2:30   Nucleation of Moderate Earthquakes and Kinematics of the San Andreas Fault in California Inferred from nano Hz to 100 Hz Strain Measurements. Johnston, M. J. S.

2:45   Observations on the Initiation Phase of Rupture as Observed in P Waveforms. Hutchings, L. J. and Foxall, W.

3:00   Strain Observations of South Iceland M6.3 Earthquakes and Hekla Eruption, 2001. Linde, A., Stefannson, R., and Agustsson, K.

3:15   The Case for Deep Coseismic Rupture in Large Continental Earthquakes. Johnston, A. C.

3:30   Seismic and Aseismic Moment Release Associated with the 5 December 1997 Kronotsky, Kamchatka Earthquake Sequence. Bürgmann, R., Kogan, M., Abercrombie, R. E., Levin, V. E., Scholz, C. H., King, R. W., and Steblov, G. M.

3:45   Detection and Resolution of Aseismic Fault Slip. Segall, P., Miyazaki, S.-I., and McGuire, J.

4:00   Break

4:30   Possible Correlation between Stress Orientation and Moment Rate along the San Jacinto Fault Zone, Southern California. Townend, J. and Zoback, M. D.

4:45   Characterization of the Time-dependent Strain Field at Seismogenic Depths Using First-motion Focal Mechanisms. Sipkin, S. A. and Silver, P. G.

5:00   Pore Fluid Effects on Nucleation of Aftershocks of the Landers Earthquake. Zanzerkia, E. E. and Beroza, G. C.

5:15   Transient Strain Accumulation and Fault Interaction in the Eastern California Shear Zone. Peltzer, G., Crampe, F., Hensley, S., and Rosen, P.

5:30   Postearthquake Healing of the Landers, California Rupture Zone. Li, Y.-G. and Vidale, J. E.

5:45   Coseismic and Postseismic Velocity Changes Measured by Repeating Earthquakes. Schaff, D. P. and Beroza, G. C.

Thursday p.m., 19 April 2001--California Room
Paleoseismology for the Planet: Problems and Progress in Quantifying Recurrence on Great Faults of the World
Daniela Pantosti, Lisa B. Grant

2:30   Can Paleoseismologic Techniques Differentiate between Aseismic Creep and Coseismic Surface Rupture? Kelson, K. I. and Baldwin, J. N.

2:45   Lateral Offsets on Surveyed Cultural Features Resulting from the 1999 Izmit and Duzce Earthquakes, Turkey. Rockwell, T. R., Dawson, T., Lindvall, S. C., Lettis, W., Langridge, R., and Klinger, Y.

3:00   Paleoseismological Earthquake Recurrence in Italy: Results and Limitations. Pantosti, D., De Martini, P. M., Galadini, F., and Galli, P.

3:15   Evidence for Earthquake Size and Recurrence along the Himalayan Thrust (HFT) of India: The Black Mango Fault. Babu, S., Kumar, S., Wesnousky, S. G., Rockwell, T. K., Ragona, D., Seitz, G. G., and Thakur, V. C.

3:30   Paleoseismology along the North American-Caribbean Plate Boundary. Prentice, C. S., Mann, P., Hengesh, J. V., Tuttle, M. P., and Pena, L.

3:45   Paleoseismology at the End of the World: Initial Observations of the Fagnano Fault, Tierra del Fuego, Argentina. Schwartz, D. P., Stenner, H. D., Costa, D. H., Smalley, R., Ellis, M., and Velasco, M. S.

4:00   Break

4:30   Recurrence of Clustered Major Earthquakes in the New Madrid Seismic Zone. Tuttle, M. P., Schweig, E. S., Sims, J. D., and Lafferty, R. H.

4:45   Long-term Slip Rates from Displaced Basalt Flows on the Hurricane Fault in Utah, and Observations on the Timing of the Most Recent Surface-faulting Earthquakes. Lund, W. R., Hozik, M. J., and Hatfield, S. C.

5:00   Irregular Recurrence of Paleoearthquakes on the Central Garlock Fault, Near El Paso Peaks, California. Dawson, T. E., McGill, S. F., and Rockwell, T. K.

5:15   Recent Ruptures along the Cholame Segment of the San Andreas Fault. Young, J. J., Colini, L., Arrowsmith, J. R., and Grant, L. B.

5:30   Preliminary Measurement of Earthquake Displacement and Post-1857 Strain Accumulation along the Cholame Segment of the San Andreas Fault. Runnerstrom, E. E., Grant, L. B., Arrowsmith, J. R., Stone, E. M., and Rhodes, D. D.

5:45   3D Excavation Shows Slight Slip Variations in Recurrent Ruptures of the San Andreas Fault. Liu, J., Klinger, Y., Sieh, K., and Rubin, C.

Thursday p.m., 19 April 2001--California Room
26 January 2001 India "Republic Day" Earthquake
Arch Johnston, William Lettis

6:00   Preliminary Observations on the Origin and Effects of the January 26, 2001 Republic Day Earthquake, India. Lettis, W. R. and Hengesh, J. V.

6:15   Aftershocks of the Gujarat, India Republic Day Earthquake. Bodin, P., Horton, S., Johnston, A. C., Withers, M., Langston, C. A., Chiu, J. M., Budhbatti, K., and Gomberg, J.

6:30   Source Parameters of the January 26, 2001 Bhuj Earthquake. Saikia, Chandan K., Somerville, Paul G., Ichinose, Gene, Thio, H. K., Rao, K. S., and Polet, J.

6:45   Geodetic Constraint of India's Severa Intracratonic Earthquakes of 1819, 1897, and 2001. Bilham, Roger, Bendick, R., Fielding, E., Gaur, V. K., and Mukul, M.

7:00   Liquefaction Induced by the 2001 Republic Day Earthquake, India. Tuttle, M., Johnston, A., Patterson, G., Tucker, K., Rajendran, C. P., Rajendran, K., Thakkar, M., and Schweig, E.

7:15   Compressional Tectonics in Failed Continental Rifts: The India Republic Day and 7 February 1812 New Madrid Earthquakes. Johnston, A. C.

Thursday p.m., 19 April 2001--El Dorado Room
Stress Triggering: New Insights into Earthquake Mechanics

B1   Stress Triggering of the 1906 San Francisco Earthquake. Pollitz, F. F.

B2   New Insights on Old New Zealand Earthquakes: Was the 1942 Mw 7.2 Wairarapa Earthquake Triggered by the 1934 Mw 7.4 Pahiatua Earthquake? Downes, G. L. and McGinty, P.

B3   Earthquake Triggering and Spatial-temporal Relations in the Vicinity of Yucca Mountain, Nevada. von Seggern, D. and Baag, C.-E.

B4   Stress Triggering of Conjugate Normal Faulting: Late Aftershocks of the 1983 Borah Peak, Idaho Earthquake. Payne, S. J., Zollweg, J. E., and Rodgers, D. W.

B5   Stress Interactions between Earthquakes in the Central Nevada Seismic Belt from 1915 to 1954 and Their Implications Toward Rupture of Subsequent Earthquakes. Ichinose, G. A., Anderson, J. G., Wesnousky, S. G., and Jaume, S. C.

B6   Effects of Periodic Stress on the Rate and Probability of Earthquake Occurrence. Beeler, N. M. and Lockner, D. A.

Thursday p.m., 19 April 2001--El Dorado Room
Faulting and Earthquake Hazards in the Cascadia Forearc: New Paradigms III

C1   3D Velocity Structure from Tomographic Inversion of SHIPS Data from Southwestern British Columbia. Ramachandran, K., Dosso, S., Zelt, C., Spence, G. D., and Hyndman, R. D.

C2   Precise Relocations of Slab Seismicity in the Northern Cascadia Subduction Zone. Cassidy, J. and Waldhauser, F.

C3   A Regional Study of Shear Wave Splitting above the Cascadia Subduction Zone. Currie, J., Cassidy, J. F., and Hyndman, R. D.

C4   N-S Shortening in the Puget Sound-Georgia Basin Measured by GPS: Relationship to Forearc Migration and Implications for Earthquake Hazard. Mazzotti, S., Hyndman, R. D., Dragert, H., Weichert, D., and Rogers, G. C.

C5   Deformation of Western Washington Resulting from Northward Migration of the Cascadia Forearc. Wells, R. E. and Johnson, S. Y.

C6   Cascadia Earthquakes and Forearc Blocks. Blakely, R. J., Wells, R. E., Weaver, C. S., and Meagher, K. L.

C7   Neotectonics of the Eastern Strait of Juan De Fuca: A Digital Geologic and Geophysical Atlas on CD-ROM. Mosher, D. C., Johnson, S. Y., Rathwell, G. J., Kung, R. B., Blakely, R. J., Brocher, T. M., Hewitt, A. T., Dadisman, S. V., Lowe, C., and Mulder, T.

C8   Imaging the Seattle Fault Zone beneath Puget Sound with High-resolution Seismic Tomography. Calvert, A. J., Fisher, M. A., and SHIPS Working Group

C9   Structure of the Seattle Basin, Washington State: Results from Dry SHIPS '99 and Kingdome SHIPS '00. Snelson, C. M., Miller, K. C., Brocher, T. M., Pratt, T. L., Trehu, A. M., and Weaver, C. S.

C10   The December 1872 Washington State Earthquake. Bakun, W. H., Haugerud, R. A., Hopper, M. G., and Ludwin, R. S.

C11   Shallow SH-wave Seismic Investigation of the Mt. Angel Fault. Wang, Z., Madin, I. P., Woolery, E. E., and Graham, G. B.

C12   Possible Late Quaternary Activity along the Portland Hills Fault, Oregon Based on Geophysical and Geological Evidence. Hemphill-Haley, M. A., Liberty, L. M., and Madin, I. P.

C13   Evidence for Progressive Folding of Late Holocene Tidal Marsh Deposits along the Western Little Salmon Fault, Humboldt Bay, Northern California. Witter, R. C., Carver, G. C., Patton, J. R., Kelsey, H. M., Koehler, R. D., Garrison-Laney, C. E., and Page, W. D.

C14   Weedy Colonists of Sand from the A.D. 1700 Cascadia Tsunami. Hughes, J. D. and Mathewes, R. W.

C15   Searching for Native Stories about Cascadia Subduction Zone Earthquakes. Ludwin, R. S.

C16   Site-response-related Shallow P- and S-wave Velocity Measurements in Seattle, and on the Crescent Formation near Olympia, Washington. Williams, R. A., Stephenson, W. J., Odum, J. K., and Worley, D. M.

C17   Empirical Ground Motion Relations for Subduction Zone Earthquakes. Atkinson, G. M. and Boore, D. M.

C18   Ground Motion Attenuation Relationships for Cascadia Subduction Zone Megathrust Earthquakes Based on a Stochastic Finite Fault Model. Gregor, N., Silva, W., Wong, I., and Youngs, R.

C19   The Effect of Great Cascadia Earthquakes on Probabilistic Ground Motion Analysis and Engineering Evaluation at Wickiup Dam, Central Oregon. Laforge, R., Ake, J., Hawkins, F., and Bliss, M.

C20   Cascadia Subduction Zone Earthquake Scenario. Noson, L. L.

C21   Probabilistic Seismic Hazards on the Olympic Peninsula, Northwest Washington. Dober, M. C., Wong, I. G., and Hemphill-Haley, M. A.

C22   Attenuation Model and Site Response from 1999 Dry SHIPS Experiment. Li, Q., Wilcock, W. S. D., Pratt, T. L., Crosson, R. S., Snelson, C. M., Miller, K. C., Brocher, T. M., Trehu, A. M. and Weaver, C. S.

C23   A Tale of Two Deltas: Potential Impacts of Cascadia-Margin Earthquakes on the Deltas of the Fraser River (Vancouver) and Duwamish River (Seattle). Kayen, R. E., Barnhardt, W. A., Monahan, P., Clague, J. J., and Christian, H.

Friday a.m., 20 April 2001--International Room
Earthquake Forecast and Hazard Models: Issues and Inputs for the Next Generation
Presiding: Edward H. Field, Chris Cramer

8:30   RELM-96: A Working Group for the Development of Regional Earthquake Likelihood Models. Field, E. H.

8:45   Handling Magnitude vs. Rupture-dimension Relations in Probabilistic Seismic Hazard Calculations. Cramer, C. H.

9:00   Time-dependent Hazard Assessment for California in Near Real-time. Gerstenberger, M. C., Wiemer, S., Giardini, D., Hauksson, E., and Jones, L.

9:15   Vector-valued Probabilistic Seismic Hazard Analysis. Bazzurro, P. and Cornell, C. A.

9:30   Toward a More Physical Basis for Strong-motion Simulation. Mai, P. M., Guatteri, M., Beroza, G. C., and Boatwright, J.

9:45   Implication of Near-surface Faulting for Strong Ground Motions in the New Madrid Seismic Zone. Langston, C. A.

10:00   Break

10:30   Predictive Relationships for Ground Motion in the Erzincan Region, Vicinity of the Eastern Part of the North Anatolian Fault Zone (Turkey). Akinci, A., Malagnini, L., Pino, A. N., Scognamiglio, Herrmann, R. B., and Eyidogan, H.

10:45   Fitting Peak Acceleration, Accounting for Finite Source Extent. Andrews, D. J.

11:00   The Forecasting of Large Earthquakes: The Model of Connected Seismic Cycles. Purcaru, G.

11:15   Groundwater and Hydrocarbon Pumping Obscures Tectonic Deformation near Los Angeles, California. Bawden, G. W., Thatcher, W., Stein, R. S., Hudnut, K. W., and Peltzer, G.

11:30   Reducing the Overprediction of Existing Hazard Models to Historical Seismicity in California. Cao, T. and Reichle, M. S.

11:45   Numerical Simulation of Rayleigh Wave Propagation in Laterally Heterogeneous Media: Applications to the Case of Mexico City. Chavez-García, F. J. and Salazar, L.

Friday a.m., 20 April 2001--California Room
Sources, Structures, and Seismograms
John N. Louie, Bruce Shaw

8:30   VLP Displacements Observed with Broadband Seismometers at Mount Erebus Volcano Modeled as a Lava Lake Seiche. Aster, R. C., Mah, S. Y., Kyle, P. R., Dunbar, N., and McIntosh, W.

8:45   Very Long-period Volcanic Earthquakes beneath Mammoth Mountain, California. Hill, D. P., Dawson, P. B., Johnston, M. J. S., Pitt, A. M., Biasi, G., and Smith, K.

9:00   Episodic Holocene Uplift Resolves Conflict between Geodesy and Geology along the Subduction Zone off Hokkaido. Satake, K. and Japan-U.S. Field Survey Team

9:15   Seismicity in a Zone of Shallow Subduction, Wellington, New Zealand: Where, What, and Why. Robinson, R.

9:30   Historical Seismicity of Offshore Puerto Rico and the Virgin Islands (1915-1943). Rodriguez, C. M., Doser, D. I., and Flores, C.

9:45   Shear-wave Velocities to 100 Meters Depth from Refraction Microtremors and Their Relation to ASTM Standards. Louie, J. N.

10:00   Break

10:45   Magnitude Dependence of Radiated Energy Spectra: Far-field Expressions of Slip Pulses in Earthquake Models. Shaw, B. E.

11:00   Estimation of Seismic Wave Energy Excited by Small Earthquakes in the Western Nagano Region, Japan. Matsuzawa, T. A., Takeo, M., Ide, S., Iio, Y., and Imanishi, K.

11:15   Reconciling Regional and Teleseismic Estimates of Radiated Seismic Energy. Perez-Campos, X., Singh, S. K., and Beroza, G.

11:30   Hypocenter Locations at Parkfield and Safod Drilling Targets. Nadeau, R. M., McEvilly, T. V., and Michelini, A.

11:45   Soufrière Hills Eruption-related Seismicity: Event Classification, Hypocenter Relocation, and Temporal Trends from Automatic Waveform Correlation. Rowe, C. A., Thurber, C. H., and White, R. A.

Friday a.m., 20 April 2001--Cathedral Hill A
3D Earth Models at Regional and Global Scales
Presiding: Harold Magistrale, Jeroen Ritsema, Walter D. Mooney

8:30   P-wave Anisotropy, Plate-mantle Interaction, and the Mechanism of Plate Tectonics. Bokelmann, G. H. R.

8:45   The SCEC Southern California Reference 3D Seismic Velocity Model Version 2. Magistrale, H., Day, S., Clayton, R., and Graves, R.

9:00   Strategies for Building Regional Crustal Velocity Models: Examples from the San Francisco Bay Area and Puget Lowland. Brocher, T. M., Parsons, T., Fisher, M. A., Blakely, R. J., Jachens, R. C., and Wentworth, C. M.

9:15   Evaluating 3D Earth Models for the Purpose of Strong Ground Motion Simulation. Dreger, D. S., Dolenc, D., Stidham, C., Baise, L., and Larsen, S.

9:30   Modeling Strong Ground Motion in the Wellington Metropolitan Area, New Zealand. Olsen, K. B., Benites, R. A., and Wood, P. R.

9:45   New Constraints on the Lithospheric Step beneath the Californias. Melbourne, T. and Helmberger, D.

10:00   Break

10:30   Regional Wave Propagation in Tanzania, East Africa. Langston, C. A., Nyblade, A. A., and Owens, T. J.

10:45   Uppermost Mantle Structure beneath China. Hearn, T., Wang, S., and Xu, Z.

11:15   Construction and Assessment of a Global Shear Velocity Model of the Upper Mantle. Shapiro, N. M. and Ritzwoller, M. H.

11:30   Estimation and Assessment of Whole Earth Structure. Vasco, D. W., Johnson, L. R., and Marques, O.

11:45   Global Seismic Tomography: A New Reference Earth Model within Our Reach? Laske, G.

Friday p.m., 20 April 2001--International Room
The Rate Debate: Paleoseismic vs. Geodetic Rates and Their Implications for the Earthquake Cycle
Presiding: Steve Wesnousky, Wayne Thatcher

1:30   Character and Origin of Discrepancies between Holocene and GPS Fault Slip Rate Estimates in the Interior Western U.S. Thatcher, W. and Wesnousky, S.

1:50   The Basin and Range-Sierra Nevada Transition along the Northern Walker Lane: Geology vs. Geodesy. Briggs, R. W., Wesnousky, W. G., and Blewitt, G.

2:05   Comparisons of Historic Fault Slip Motions and Paleoseismic Slip Rates to the Geodetic Velocity Field across the Central Nevada Seismic Belt in the Vicinity of the 1954 Earthquake Sequence. Caskey, S. J. and Bell, J. W.

2:25   Comparison of Geodetic (Bargen) Strain Rates and Geologic Fault Slip Rates across the Wasatch, Oquirrh, and Stansbury Faults, Eastern Basin and Range Province, Utah. Friedrich, A. M., Wernicke, G. P., Niemi, N. A., Bennett, R. A. and Davis, J. L.

2:45   Crustal Deformation of the Wasatch Front, Utah from GPS Measurements, Paleoseismicity, and Elastic-viscoelastic Modeling. Chang, W. L., Smith, R. B., and Meertens, C. M.

3:00   Break

3:30   Crustal Deformation and Seismic Cycle of the Northern Basin and Range Based on Geodetic, Historic Earthquake, and Quaternary Fault Data. Smith, R. B., Chang, W., Puskas, C., and Meertens, C. M.

3:50   The Contribution of Postseismic Slip from the 1872 Owens Valley Earthquake to Current Deformation. Miller, M. M., Lee, J., and Dixon, T. H.

4:05   New Geologic and Geodetic Slip Rate Estimates on the North Coast San Andreas Fault: Approaching Agreement? Prentice, C. S., Prescott, W. H., Langridge, R., and Dawson, T.

4:25   Geologic vs. Geodetic Extension Rates across the Gulf of Corinth, Greece. De Martini, P. M., McNeill, L., Collier, R., and Pantosti, D.

4:45   Aseismic Slip of the Mari Kina Fault in Metro Manila, Philippines. Kinugasa, Y., Takezono, M., Rimando, R. E., Panol, M. D., and Lanuza, L.

Friday p.m., 20 April 2001--California Room
Observations and Predictions of Strong Ground Motion Wave Fields in a Heterogeneous Earth
Presiding: Douglas S. Dreger, Kim B. Olsen

1:30   Regional Predictive Relationships for the Ground Motion in the Friuli Region (Northeastern Italy). Malagnini, L., Akinci, A., Pino, N. A., Scognamiglio, L., and Herrmann, R. B.

1:45   "Empirical" Attenuation Relations for Central and Eastern U.S. Hard and Soft Rock and Deep Soil Site Conditions. Abrahamson, N. A. and Silva, W.

2:00   Ground Motion Amplification in Mississippi Embayment Deposits. Romero, S. and Rix, G. J.

2:15   Ground Motion in the Taipei and Ilam Basins, Taiwan. Fletcher, J. B.

2:30   Estimation of Q and Near-surface Soil Amplification for Long-period Waves in the Los Angeles Basin. Olsen, K. B., Bradley, C. R., and Day, S. M.

2:45   A New 3D Finite-difference Scheme with Volume Harmonic Averaging of Torsion and Bulk Moduli and Arithmetic Averaging of Density. Moczo, P., Kristek, J., Halada, L., and Archuleta, R. J.

3:00   Break

3:30   Modeling of the Teleseismic Wave Propagation in the Santa Clara Valley, California. Dolenc, D., Dreger, D., and Larsen, S.

3:45   Observed and Simulated Strong Ground Motions in the San Bernardino Basin Region. Graves, R. W. and Wald, D. J.

4:00   Analysis of Source Radiation Effects Using Empirical Mode Decomposition. Pitarka, A., Graves, R. W., and Somerville, P. G.

4:15   Source Parameters of Earthquakes in Eastern and Western North America Based on Finite-fault Modeling. Beresnev, I. A. and Atkinson, G. M.

4:30   3D FDM for Simulation of Wave Propagation Using a Variably Spaced Discontinuous Grid. Aoi, S. and Fujiwara, H.

4:45   Critical Slip Weakening Distance and Nonradiating Fault Areas. Archuleta, R.

Friday, 20 April 2001--El Dorado Room
Sources, Structures, and Seismograms

A1   Regional Moment-tensor Analysis of Earthquakes in the Coastal and Offshore Region of British Columbia. Ristau, J. P., Rogers, G. C., and Cassidy, J. F.

A2   Stressed Out in Southwestern British Columbia: Variations in the Crustal Stress Regime. Mulder, T. L. and Rogers, G. C.

A3   Focal Mechanism Analysis of the 1988 and 1993-1996 Southern Red Sea Earthquake Sequences. Al-Arifi, N. S., Fayez, A. S,. and Simila, G.

A4   Variance Components Analysis of Ground-motion Variability for Rock Sites in Taiwan. Tsai, C.-C. P. and Chen, Y. H.

A5   Delineation of Basin Geometry and Faulting beneath Urbanized San Bernardino Valley, California from Seismic-reflection and Gravity Data. Stephenson, W. J., Odum, J. K., Williams, R. A., and Anderson, M. L.

A6   Comparison of High-frequency Regional S-wave Propagation in the Utah and Yellowstone Regions. Jeon, Y.-S. and Herrmann, R. B.

A7   Mechanisms and Ground-truth Observations for the Largest (ML = 3.0-4.2) Coal-mining-induced Seismic Events in Utah, 1978-2001. Arabasz, W. J., Pechmann, J. C., and McCarter, M. K.

A8   The Association between Seismicity Induced by Deep-well Injection, Injectate Migration, and Tectonic Stresses at Paradox Valley, Colorado. Block, L., Ake, J., and Mahrer, K.

A9   Spatial and Temporal Variations in Seismicity in the Kodiak Island, Alaska Region. Doser, D. I., Brown, W. A., Velasquez, M., and Hincapie, J. O.

A10   Location of Earthquakes in the Central Andean Region. Drake, L. A., Ayala, R., and Condori, S. C.

A11   Depth Focusing of Teleseismic Receiver Functions. Morozov, I. B., Levander, A., and Dueker, K. G.

A12   Teleseismic Receiver Functions Using Realistic Recording Apertures. Morozov, I. B. and Dueker, K. G.

A13   Lithospheric Structure of the Western U.S. from the Joint Inversion of Receiver Functions and Surface-wave Dispersion Observations. Julia, J., Ammon, C. J., and Herrmann, R. B.

A14   Lithospheric Structure of the Tibetan Plateau Inferred from the Simultaneous Inversion of Receiver Functions and Surface-wave Dispersion Observations. Mejía, J. A., Julia, J., Ammon, C. J., and Herrmann, R. B.

A15   Crustal Structure under TJN Station in Korea by Receiver Function Method. Yoo, H. J. and Lee, K. H.

A16   Constraints on Anelastic Attenuation in the South Carolina Coastal Plain from Spectral Analysis of Converted Phases. Chapman, M. C., Talwani, P., and Cannon, R.

A17   Seismic Recordings of the Carlsbad, New Mexico Pipeline Explosion of 19 August 2001. Koper, K. D., Wallace, T. C., Wagner, L., Aster, R., Schlue, J., and Sanford, A.

A18   Resolution of Shallow Shear Structure Using Regional Surface Waves from Mining Explosions and Genetic Algorithms. Zhou, R. and Stump, B. W.

A19   Earthquake Migration in East Asia. Zhao, G.-M., Yao, L.-Y., and Fan, G.-W.

A20   Joint Seismicity and Rock Physics Interpretation of the Geysers Geothermal Reservoir. Berge, P. A. and Hutchings, L. J.

A21   Development and Applications of Mathematical Models of Dynamic Rupture with Complex Nonlinear Geometry for Analysis of Seismic Radiation from Complex Earthquakes. Bykovtsev, A. S., Katz, A. A., and Sokolov, V. Y.

Friday, 20 April 2001--El Dorado Room
Earthquake Forecast and Hazard Models: Issues and Inputs for the New Generation

B1   The Use of Time-dependent Models in Probabilistic Seismic Hazard Analysis along the Wasatch Front, Utah. Olig, S. S., Thomas, P. A., and Wong, I. G.

B2   Earthquake Forecast and the Study of Large Movements along Prepared Fault. Bykovtsev, A. S. and Katz, A. A.

B3   Radon Groundwater Geochemistry Related to Seismic Events in Central Apennines (Italy). Plastino, W., Bella, F., Catalano, P. G., and Di Giovambattista, R.

B4   Is the Korean Peninsula Free from Large Earthquakes in the Surroundings of the Calamitous Earthquake Region in the Far East? Kim, S. G.

B5   The Model for the Earth Crust Dynamic Deformation and Earthquake Prediction. Ovcharenko, A. V., Sokolov, V. Y., and Wenzel, F.

B6   Seismic Sources and Probabilistic Hazard in the Back Valleys of the Wasatch Front, Utah. Gerth, R., Wong, I., Olig, S., Thomas, P., Dober, M., and Ake, J.

B7   Asperity Model of an Earthquake. Johnson, L. R. and Nadeau, R. M.

B8   Thrust Nappes and Megaslides: Implications for Active Fault Geometry, Dynamic Rupture, and Seismic Hazard in Southern California. Nicholson, C., Kamerling, M. J., and Brune, J. N.

B9   Rupture Directivity in a Foam Rubber Earthquake Model. Anooshehpoor, A. and Brune, J. N.

B10   Simultaneous Estimation of Seismic Source Parameters, Path-averaged Attenuation, and Site-amplification Function as an Efficient Tool to Analyze a Huge Amount of Data. Ide, S.

B11   Effects of Initial Location Error and Station Distribution on Double-difference Earthquake Relocations: Comparing the San Gregorio and Calaveras Faults. Ross, S. L., Michael, A. J., Ellsworth, EW. E., Julian, B., Klein, F., Oppenheimer, D., Richards-Dinger, K., and Waldhauser, F.

B12   Location of Microearthquakes in the Salton Sea Geothermal Field Using a 3D Anisotropic Velocity Model. Holland, A. A. and Doser, D. I.

B13   A New Technique for Finding First-motion Focal Mechanisms, Applied to the 1994 Northridge, California Aftershock Sequence. Hardebeck, J. L. and Shearer, P. M.

B14   The GEONET Project: A Modern Geological Hazards Monitoring System for New Zealand. Gledhill, K. K. and the GEONET Team

Friday p.m., 20 April 2001--El Dorado Room
3D Earth Models at Regional and Global Scales

C1   Crustal Structure of North America and the Adjacent Ocean Basins. Chulick, G., Mooney, W., and Detweiler, S.

C2   Observations of Noncoincidence of Lithospheric Edge at Crustal and Subcrustal Depths. Gregersen, S., Shomali, H., Voss P., and TOR Working Group

C3   3D Crustal and Uppermost Mantle Structure beneath Southwestern China. Wang, C.-Y., Chan, W., and Mooney, W. D.

C4   A 3D Lithospheric Model of Asia. Bradley, C., Steck, L. K., and Aprea, C.

C5   Construction and Validation of the Menafsu Crust and Upper Mantle Model of the Middle East, North Africa, and Former Soviet Union. Pasyanos, M. E., Walter, W. R., Flanagan, M., and Goldstein, P.

Friday, 20 April 2001--Pavilion
26 January 2001 India "Republic Day" Earthquake

D1   Intensity Distribution of the January 26, 2001 Bhuj, India Earthquake as Determined from News Accounts. Hough, S. E. and Martin, S.

D2   Source Parameters of the January 26, 2001 Bhuj Earthquake. Saikia, Chandan K., Somerville, Paul G., Ichinose, Gene, Thio, H. K., Rao, K. S., and Polet, J.

D3   Explosive Cratering Generated by the Republic Day Earthquake: Sudden Release of Natural Gas or Sudden Release of Elevated Pore-water Pressure? Patterson, G., Rydelek, P., Johnston, A., and Tuttle, M.

D4   An Explanation for Deep Aftershocks of the Republic Day Earthquake in the Ductile Lower Crust. Johnston, A. C., Bodin, P., and Rydelek, P. A.

D5   Preliminary Analysis of Aftershock Data from the January 26, 2001 India "Republic Day" Earthquake. Chiu, J. M., Pujol, J., Chiu, S. C., Withers, W., Horton, S., Bodin, P., Johnston, A. C., Rydelek, P., Bollwerk, J., and Patterson, G.

D6   Liquefaction and Related Effects from the Mw 7.7 Republic Day Earthquake, India. Hengesh, J. V. and Lettis, W. R.

D7   The 2001 Gujarat, India Earthquake and Seismic Hazard in Central and Eastern North America. Cramer, C. H. and Wheeler, R. L.

Friday, 20 April 2001--Pavilion
28 February 2001 Nisqually, Washington Earthquake

E1   The Magnitude 6.8 Nisqually Earthquake of February 28, 2001: Seismological Aspects. Crosson, R. S., Creager, K. C., Malone, S., Thomas, G., Ludwin, R., Qamar, A., Weaver, C. S., and Pratt, T.

E2   Finite Source Process of the 28 February 2001 Mw 6.8 Nisqually, Washington Earthquake. Dreger, D., Murray, M. H., and Kaverina, A.

E3   Nisqually Earthquake Rupture History from Strong Motion Observations. Xu, Q., Creager, K. C., Li, Q., and Crosson, R. S.

E4   Map of Modified Mercalli Intensities for the Nisqually (Washington State) Earthquake of 28 February 2001. Hopper, M. G., Adams, E. R., Wald, D. J., and Dewey, J. W.

E5   Significant Historical Puget Sound Earthquakes. Bakun, W. H. and Ludwin, R. S.

E6   Teleseismic Relocations of Large Intraslab Earthquakes beneath the Puget Lowland and the Strait of Georgia. Villasenor, A., Engdahl, E. R., and Kirby, S. H.

E7   Possible Discontinuity in Juan de Fuca Slab in the Vicinity of the (M 6.8) Nisqually Earthquake. McCrory, P. A., Walter, S. A., and Crosson, R. S.

E8   Aftershock Impoverishment of the M 6.8 Nisqually Earthquake and Other Intraslab Earthquakes: A Possible Physical Explanation. Kirby, S. H.

E9   An Unprecendented Topside Image of the 410 km Discontinuity from the Nisqually Earthquake. Melbourne, T.

E10   Seismological and Geodetic Observations of the 28 February, 2001 Nisqually, Washington Earthquake. Nabelek, J. and McCaffrey, R.

E11   Geodetic Signature of the February 28, 2001 Nisqually Earthquake. Miller, M. M., Austin, K. E., Johnson, D. J., Miner, A., Rubin, C., Ardoin, C., August, M., Barson, J., Cawley-Murphree, A., Coen, J., Davidson, C., Eversaul, M., Hall, T., Hamilton, A., Johnson, A., Madden, C., Reed, J., Streig, A., Wilcos, B., Williams, S., and Qamar, A.

E12   Regional Map view of Instrumentally Determined Ground Motions, Nisqually Earthquake 28 February 2001. Haugerud, R. A., Thomas, G., and Palmer, S. P.

E13   Regional Map View of Ground Deformation Associated with the Nisqually Earthquake, 28 February 2001. Haugerud, R. A., Troost, K. G., Harp, E. L., Wegmann, K. W., Sherrod, B. S., Pratt, T. L., Powers, P. S., and Kramer, S. L.

E14   Reconnaissance of Ground Failures in the Southern Puget Sound Lowlands Caused by the Nisqually Earthquake. Walsh, T. J., Baker, L., Dunn, A., Lingley, W. S., Logan, R., Magsino, S. L., McKay, D., Norman, D., Palmer, S. P., Polenz, M., Pringle, P. T., Schasse, H., and Wegmann, K.

E15   Lateral Spreading in the Olympia, Washington Area during the Nisqually Earthquake. Palmer, S. P. and Moses, L. J.

E16   Chimney Damage Patterns in the Greater Seattle Area from the Nisqually Earthquake of February 28, 2001. Booth, D. B., Wells, R. E., Givler, R., DuRoss, C., Blakely, R. J., Meeks, E., Ebel, K., Fryer, J., Troost, K., Booth, R., Barnett, E., Crider, J., and Gregoire, P.

E17   Comparison of Liquefaction and Lateral Spreading during the 1949 Olympia, 1965 Seattle-Tacoma, and 2001 Nisqually Earthquakes. Perkins, W. J., Chang, S. W., Mitchell, R. M., Nykamp, M. A., and Palmer, S. P.

E18   Ground Deformation at the Port of Seattle during the Nisqually Earthquake. Barnhardt, W. A., Kayen, R. E., Palmer, S., Troost, K. G., and Sherrod, B.

E19   Geologic Controls on Ground Failures in Seattle and Vicinity during the 2001 Nisqually Earthquake. Troost, K. G., Booth, D. B., Shimel, S. A., Haugerud, R. A., Kramer, S. L., Kayen, R. E., and Barnhardt, W. A.

E20   Liquefaction of the Issaquah Creek Delta during the Nisqually Earthquake. Crider, J. G., Schermer, E. R., and Haugerud, R. A.

E21   Some Observations of Geotechnical Aspects of the February 28, 2001, Nisqually Earthquake in Olympia, South Seattle, and Tacoma, Washington. Bray, J., Sancio, R., Kammerer, A., Merry, S., Rodriguez-Mark, A., Khazai, B., Chang, S., Bastani, A., Collins, B., Hausler, E., Dreger, D., Perkins, J., and Nykamp, M.

E22   Typical Dtructural Damage Observed after the Nisqually Earthquake. Sanli, A., Ankar, S., and Celebi, M.

E23   Engineering Implications of Ground Motions from the Nisqually (Seattle) Earthquake of February 28, 2001. Campbell, K. W. and Bozorgnia, Y.

E24   Insured Loss Estimates for the 28 February 2001 Nisqually Earthquake. Williams, C. R., Windeler, D. S., Rahnama, M., Morrow, G. C., and Rodriguez, A.

E25   The February 28, 2001 Nisqually Earthquake and Natural Resources Building Response: A Case Study for Nonstructural Mitigation. Lasmanis, R.


Posted: February 2001. Updated: 3 April 2001