The Seismological Society of America (SSA) is an international society devoted to the advancement of seismology and its applications in understanding and mitigating earthquake hazards and in imaging the structure of the Earth. Founded in 1906, the society has members throughout the world representing seismologists and other geophysicists, geologists, engineers, insurers, and policy-makers in preparedness and safety. The society was established by academic, government, and other scientific and engineering professionals in the months following the April 18th San Francisco Earthquake, with the first meeting of the Board of Directors taking place on December 1, 1906. The Seismological Society of America publishes the Bulletin of the Seismological Society of America (BSSA), a journal of research in earthquake seismology and related disciplines since 1911, and Seismological Research Letters (SRL), which serves as a forum for informal communication among seismologists, as well as between seismologists and those non-specialists interested in seismology and related disciplines.
Calculating tsunami risk for the US East Coast
The greatest threat of a tsunami for the U.S. east coast from a nearby offshore earthquake stretches from the coast of New England to New Jersey, according to John Ebel of Boston College, who presented his findings today ...
Apr 19, 2013
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A global murmur, then unusual silence
In the global aftershock zone that followed the major April 2012 Indian Ocean earthquake, seismologists noticed an unusual pattern. The magnitude (M) 8.6 earthquake, a strike-slip event at intraoceanic tectonic plates, caused ...
Apr 19, 2013
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Measuring the hazards of global aftershock
The entire world becomes an aftershock zone after a massive magnitude (M) 7 or larger earthquake—but what hazard does this pose around the planet? Researchers are working to extend their earthquake risk estimates over a ...
Apr 19, 2013
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Helping to forecast earthquakes in Salt Lake Valley
Salt Lake Valley, home to the Salt Lake City segment of the Wasatch fault zone and the West Valley fault zone, has been the site of repeated surface-faulting earthquakes (of about magnitude 6.5 to 7). New research trenches ...
Apr 17, 2013
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Roman mausoleum tested for ancient earthquake damage
Built under a sheer cliff, with a commanding view of the forum and castle in the ancient city of Pinara in Turkey, a Roman mausoleum has been knocked off-kilter, its massive building blocks shifted and part of its pediment ...
Mar 20, 2013
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Can intraplate earthquakes produce stronger shaking than at plate boundaries?
New information about the extent of the 1872 Owens Valley earthquake rupture, which occurs in an area with many small and discontinuous faults, may support a hypothesis proposed by other workers that these types of quakes ...
Mar 20, 2013
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Osaka Basin map: Identifies high-rise buildings at risk from quakes
The Osaka Basin, Japan is home to many high-rise buildings that sit atop its thick soft sediments, vulnerable to long-period strong ground motions that last minutes. A new map created by Japanese researchers is intended to ...
Feb 04, 2013
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Hoodoos—key to earthquakes?
In the absence of long-term instrumental data, fragile rock formations, called hoodoos, may be key to understanding seismic hazard risk. In this study, researchers consider two hoodoos in Red Rock Canyon region to put limits ...
Feb 04, 2013
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2011 Virginia quake triggered landslides at extraordinary distances
The 2011 Mineral, Virginia M-5.8 earthquake was felt over an extraordinarily large area. A new study details landslides triggered by the earthquake at distances four times greater and over an area 20 times ...
Nov 06, 2012
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City of Ottawa sits atop soil, geologic features that amplify seismic waves
Engineers and city planners study surface geology in order to construct buildings that can respond safely to earthquakes. Soft soil amplifies seismic waves, resulting in stronger ground motion than for sites built over bedrock. ...
Oct 03, 2012
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Ancient records shed light on Italian earthquakes (Aquila area)
When a damaging earthquake struck the area of L'Aquila in central Italy in 2009, it was the latest in the region's long history of strong and persistent quakes. The rich recorded history of settlement in the area, along with ...
Aug 03, 2012
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Homing in on a potential pre-quake signal
In a new analysis of the 2004 magnitude 6.0 Parkfield earthquake in California, David Schaff suggests some limits on how changes measured by ambient seismic noise could be used as a pre-earthquake signal.
Aug 02, 2012
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Are large earthquakes linked across the globe?
The past decade has been plagued with what seems to be a cluster of large earthquakes, with massive quakes striking Sumatra, Chile, Haiti and Japan since 2004. Some researchers have suggested that this cluster has occurred ...
Aug 02, 2012
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Seattle Fault Zone -- 900-930 AD earthquake larger than previously thought
A fresh look at sedimentary evidence suggests the 900-930 AD rupture of the Seattle fault possibly produced a larger earthquake than previously recognized. The Seattle fault zone, a series of active-east-west trending thrust ...
May 30, 2012
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San Andreas Fault in Santa Cruz Mountains -- large quakes more frequent than previously thought
Recent paleoseismic work has documented four surface-rupturing earthquakes that occurred across the Santa Cruz Mountains section of the San Andreas Fault (SAF) in the past 500 years. The research, conducted by the U.S. Geological ...
May 30, 2012
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