Motion from Distant Earthquakes Can Shake Tall Buildings

20 April 2017 -DENVER — Data collected from two tall buildings, one in Osaka and one in Los Angeles, demonstrate that long-lasting motions from distant earthquakes — up to hundreds of kilometers away — an shake those buildings severely and can cause structural and non-structural damage.

Mehmet Celebi of the U.S. Geological Survey discussed these two buildings at the 2017 SSA Annual Meeting. He suggested that design codes for these types of buildings should take into account these long-distance effects.

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Seismology on Mars and Beyond at SSA Annual Meeting

20 April 2017 -DENVER — In May 2018, NASA Discovery's InSight mission will be the first lander to place an ultrasensitive broadband seismometer on the surface of Mars — the first planetary seismometer deployed since the 1970s.

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Forecasting Large Earthquakes along the Wasatch Front, Utah

20 April 2017 -DENVER — There is a 43% probability that the Wasatch Front region in Utah will experience at least one magnitude 6.75 or greater earthquake, and a 57 % probability of at least one magnitude 6.0 earthquake, in the next 50 years, said researchers speaking at the 2017 SSA Annual Meeting. In their report released in 2016, the Working Group on Utah Earthquake Probabilities presented their first forecast for large earthquakes along faults in the Wasatch region.

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Seismologists on the Front Line of North Korea Nuclear Monitoring

20 April 2017 -DENVER — As tensions rise again over the development of North Korea's nuclear weapon and missile program, seismologists at the 2017 SSA Annual Meeting offered a unique glimpse at what the world knows about the location, depth and size of the country's past nuclear tests.

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Seismologists Offer Detailed Look at New Zealand’s Kaikoura Earthquake

20 April 2017-DENVER — The magnitude 7.8 Kaikoura earthquake that struck the South Island of New Zealand last November was the largest on-land recorded earthquake in the country's history. In a special session at the 2017 SSA Annual Meeting, researchers gathered to describe their findings on the quake and its implications for further seismic activity in the region.

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Researchers Seek New Ways to Improve Earthquake Risk Communications

20 April 2017-DENVER — The public wants to know more about earthquake risk and how best to manage it, surveys show, but scientists and engineers must adapt their communication skills to meet these public needs, researchers reported at the 2017 SSA Annual Meeting.

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Governor Hickenlooper at SSA: “Policymaking Needs to Be Based on the Facts”

19 April 2017 -DENVER — Speaking at the 2017 SSA Annual Meeting, Colorado Gov. John Hickenlooper said science is "the best tool we have for predicting our future challenges and what our best responses are."

"Policymaking needs to be based on the facts," said Hickenlooper, the keynote speaker for the Society's annual Public Policy Luncheon. "It has to be based on a strong foundation of science. There are always going to be arguments, there are strong self-interests in these issues. But you have to recognize … that facts have weight."

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Latest SSA Journals
 

April Issue of BSSA Now Available

BSSACover2

23 March 2017 – The complete April 2017 issue of the Bulletin of the Seismological Society of America (BSSA vol. 107, no. 2) is now available online to SSA members and institutional subscribers at GeoScienceWorld and BSSA Online. SSA members should log in to the members area and follow the link from there to BSSA Online at GeoScienceWorld to access full text or PDFs of all articles from the issue (log in with your SSA username and password required). Institutional BSSA subscribers can access the issue here; Institutional GeoScienceWorld subscribers can access it here. The print edition of this issue is scheduled to mail on 4 April.

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March/April SRL Available

23 February 2017 – The complete march/April 2017 issue of Seismological Research Letters, Volume 88, Number 2A, is now available online at the GeoScienceWorld website. This issue includes:

Cover of SRL 88:2A.
Click to Enlarge Cover
[SRL Cover Picture]

On the Cover…
The Mw 7.8 Ecuador earthquake of 16 April 2016 was the sixth earthquake larger than Mw 7 to rupture the subduction megathrust between the Nazca and South American plates since 1906. He et al., (this issue) used InSAR images to determine coseismic surface displacements associated with this earthquake. The 2016 earthquake is coincident with the location of the 1942 Mw 7.8 earthquake, and both likely ruptured an asperity that also failed in the 1906 Mw 8.8 earthquake. Shown here is the location and local detail of the megathrust. For this same 2016 event, Beauval et al. (this issue) compared observed ground-motion attenuation data with four different ground-motion prediction equations, evaluating the interface models used for seismic-hazard studies.

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SSA members should log in to the members area and follow the link from there to SRL Online at GeoScienceWorld to access full text or PDFs of all articles from the issue (log in with your SSA username and password required). Institutional subscribers can access the issue here. The print edition of this issue is scheduled to mail on 5 January.

Not a member? Join now to get immediate access.