SRL, 83:2, Electronic Supplement to Kilb et al.

Electronic Supplement to
Listen, Watch, Learn: SeisSound Video Products

by Debi Kilb, Zhigang Peng, David Simpson, Andrew Michael, Meghan Fisher, and Daniel Rohrlick

This electronic supplement consists of (a) sample SeisSound video products, which include visual and auditory information about seismograms; and (b) a bundled file that includes the MATLAB computer codes and a sample data set to compute visual and audio parts of the SeisSound product.

About SeisSound Products

The SeisSound video products include visual and auditory information about seismograms. The visual component includes the seismogram and associated colorful spectrogram, both of which are presented in a movie format to ‘draw’ the data sequentially indicating how it evolves with time. In sync with the visual information is an auditory sound file, time-compressed and amplitude-normalized so the frequency content of the seismogram can be easily heard. They provide a unique way for us to watch and listen to the vibration of the Earth that is otherwise inaccessible, and help us to decipher and understand complicated earthquake physics and triggering processes.

When using these products please acknowledge: Kilb, D., Z. Peng, D. Simpson, A. Michael, M. Fisher and D. Rohrlick (2012). Listen, Watch, Learn: SeisSound Video products, Seismological Research Letters.

Feel free to email us at dkilb@ucsd.edu if you have additional questions, comments or suggestions.

QuickTime Movies

Movie S1. Triggered tremor in Parkfield, California, from the 2002 Mw7.8 Denali, Alaska, earthquake

[Denali_Triggered_Tremor.mov; 11.4 MB; Created by Debi Kilb]

Movie S2. Drumbeat earthquake swarms during the 2004 Mt. St. Helen eruption

[MtStHelen_Drumbeat.mov; 11.4 MB; Created by Debi Kilb]

Movie S3. Magnitude 9.1 - Sumatra, 2004 December 26 (T-Phase)

[DGAR_movie60FPS.mov; 3.2 MB; Created by Zhigang Peng]

Movie S4. Magnitude 8.1 - Samoa Islands Region
29 September 2009 17:48:10 UTC (station UPAR)

[UPOR_movie60FPS.mov; 4.7 MB; Created by Zhigang Peng]

Movie S5. Magnitude 8.1 - Samoa Islands Region
29 September 2009 17:48:10 UTC (station AFI)

[AFI_aftershock_movie60FPS.mov; 12.5 MB; Created by Zhigang Peng]

Movie S6. A sequence of powerful (Magnitude 6+) earthquakes in Mid Niigata Prefecture, Central Japan, 23 October 2004

[MidNiigata2004.mov; 3.1 MB; Created by Zhigang Peng]

Movie S7. 2008 Iwate-Miyagi Nairiku Earthquake (M7.2), centered in southern part of Iwate prefecture, occurred at 08:43:46 AM (JST) on Saturday, June 14, 2008.

[Iwate_2008_v5.mov; 56.5 MB; Created by Zhigang Peng]

Movie S8a and Movie S8b.
Magnitude 7.1 - IZU ISLANDS, JAPAN REGION
2009 August 09 10:55:55 UTC

[a: Izu_20090809_10frame.mov; 92 MB; Created by Zhigang Peng]

[b: Izu_2009_v5.mov; 192.1 MB; Created by Zhigang Peng]

Matlab Codes and Sample Data

Download: Codes_and_Sample_Data.zip [Zip Archive; 130.6 MB]

Step 1: Download and unzip the file.

Step 2: Confirm that you have successfully obtained 8 Matlab codes in the 'Codes' directory and the data file BK.PKD.HHT.SAC in the 'Denali_202_at_Parkfield' directory.

Step 3: Start Matlab and set 'Codes' as your current Folder (if unfamiliar to Matlab type 'help cd' and 'help pwd' in the command window).

Step 4: Run 'main_tremor' in the Matlab command window. This will create the audi file and the image files, automatically storeing them in sub-directories in the data directory 'Denali_2002_at_Parkfield'.

Step 5: To combine the audio and image files into the final movie use QuickTime Pro 7 as described in Table 3 of Kilb et al., 2012.

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Electronic Supplement to Listen, Watch, Learn: SeisSound Video Products