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Latest Megathrust earthquake Stories

New Insights Into Great Earthquake In Chile
2014-08-15 03:40:00

GFZ GeoForschungsZentrum Potsdam, Helmholtz Centre A long lasting foreshock series controlled the rupture process of this year's great earthquake near Iquique in northern Chile. The earthquake was heralded by a three quarter year long foreshock series of ever increasing magnitudes culminating in a Mw 6.7 event two weeks before the mainshock. The mainshock (magnitude 8.1) finally broke on April 1st a central piece out of the most important seismic gap along the South American subduction...

Georgia Basin May Amplify Ground Shaking From Next Quake In Vancouver
2014-01-21 08:15:38

Seismological Society of America Tall buildings, bridges and other long-period structures in Greater Vancouver may experience greater shaking from large (M 6.8 +) earthquakes than previously thought due to the amplification of surface waves passing through the Georgia basin, according to two studies published by the Bulletin of the Seismological Society of America (BSSA). The basin will have the greatest impact on ground motion passing over it from earthquakes generated south and southwest...

Scientists Accurately Forecasted Size And Location Of 2012 Costa Rica Earthquake
2013-12-23 07:19:58

Georgia Institute of Technology Scientists using GPS to study changes in the Earth's shape accurately forecasted the size and location of the magnitude 7.6 Nicoya earthquake that occurred in 2012 in Costa Rica. The Nicoya Peninsula in Costa Rica is one of the few places where land sits atop the portion of a subduction zone where the Earth's greatest earthquakes take place. Costa Rica's location therefore makes it the perfect spot for learning how large earthquakes rupture. Because...

Megathrust Earthquakes
2013-06-13 05:25:12

redOrbit Staff & Wire Reports - Your Universe Online In an attempt to better prepare for future massive “megathrust” earthquakes along the west coast of Canada, researchers have prepared a record of earthquake history in southern British Columbia. Their findings, which were published Wednesday in the Canadian Journal of Earth Sciences, will play an important role in helping scientists, government officials and the general public understand the size and frequency of...

Japan Earthquake Produced Largest Slip Ever Recorded
2013-02-08 05:47:23

Alan McStravick for redOrbit.com - Your Universe Online As we are quickly approaching the two-year anniversary of the Tohoku-Oki earthquake that prompted the devastating Honshu tsunami, we learned this week about a rapid-response drilling operation at the site of the earthquake. The March 2011 earthquake, a magnitude 9.0 temblor, was responsible for producing a 164-foot-tall slip along the fault. This is the single largest slip ever recorded in an earthquake. Needless to say, such a...

2011-05-23 21:58:25

Earthquake scientists trying to unravel the mysteries of an unfelt, weeks-long seismic phenomenon called episodic tremor and slip have discovered a strange twist. The tremor can suddenly reverse direction and travel back through areas of the fault that it had ruptured in preceding days, and do so 20 to 40 times faster than the original fault rupture. "Regular tremor and slip goes through an area fairly slowly, breaking it. Then once it's broken and weakened an area of the fault, it can...

2011-03-11 16:14:00

Special Looks at What a Similar Quake Could Do to Seattle, Washington, and America's Pacific Northwest WASHINGTON, March 11, 2011 /PRNewswire-USNewswire/ -- In light of today's devastating earthquake in Japan and the resulting tsunami barreling across the Pacific Ocean, National Geographic Channel will air the world premiere special Countdown to Catastrophe: Mega Quake this Sunday, March 13, at 8 p.m. ET/PT. Countdown to Catastrophe: Mega Quake As the world witnesses what a devastating...

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2010-08-19 09:11:22

September 29, 2009, event was seismic triple-whammyA magnitude-8.1 earthquake and tsunami that killed 192 people last year in Samoa, American Samoa and Tonga was in fact a triple-whammy.The 8.1 "great earthquake" concealed and triggered two major quakes of magnitude 7.8, seismologists report in a paper in this week's issue of the journal Nature.The National Science Foundation (NSF) and the U.S. Geological Survey funded the research, which was led by seismologist Thorne Lay of the...

2010-05-07 13:17:23

Just a few years ago, Dan Farber happened to be doing field work in Peru with students when the 8.0 Pisco earthquake struck. As a scientist working in the active tectonics of the Peruvian Andes - funded through the Lawrence Livermore National Laboratory's Institute for Geophysics and Planetary Physics - Farber was asked by colleagues if he could participate in a rapid response team to map the damage of the seismic deformation and install a system of geodetic stations. He jumped at the...

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2010-05-06 07:49:40

Caltech scientists and partners explore the effects of aseismic slip in the aftermath of 2007 Peru earthquake as well as in models of the seismic cycle On August 15, 2007, a magnitude 8.0 earthquake struck in Central Peru, killing more than 500 people"”primarily in the town of Pisco, which was heavily damaged by the temblor"”and triggering a tsunami that flooded Pisco's shore and parts of Lima's Costa Verde highway. The rupture occurred as the Nazca tectonic plate slipped...


Word of the Day
omadhaun
  • A fool; a simpleton: a term of abuse common in Ireland and to a less extent in the Gaelic-speaking parts of Scotland.
This word is partly Irish in origin.