Sierra El Mayor (Baja) 7.2 Magnitude Earthquake

April 7, 2010 rockman Geologic Hazards Comments Off on Sierra El Mayor (Baja) 7.2 Magnitude Earthquake

A magnitude 7.2 earthquake in the Baja region of Mexico on April 4, 2010 (Easter Sunday) caused significant damage in the towns of Mexicali and Calexico and was felt as far away as Phoenix, San Diego and Los Angeles. Here are several new articles and blog posts on the event.

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Video: Hayward Baker’s Wet Soil Mixing at Community Memorial Hospital

October 10, 2012 rockman Project Related Comments Off on Video: Hayward Baker’s Wet Soil Mixing at Community Memorial Hospital

To keep the loose soils beneath a planned hospital from liquefying and damaging the foundations during the design earthquake, Hayward Baker stabilized the site by performing wet soil mixing. In addition, HB installed tie down […]

Geologic Hazards

China Earthquake Coverage

May 13, 2008 rockman Geologic Hazards Comments Off on China Earthquake Coverage

The regular news media as well as the geo-blogosphere are all abuzz about Monday’s 7.9 magnitude earthquake in central China. Official death toll is at 12,000 right now and that’s in Sichuan Province alone.  My guess is that number will swell substantially in the coming days. If you haven’t seen photos and video yet, they are absolutely gut-wrenching. My heart and prayers go out to the victims of this disaster. (Photo by Liu Hai, AP)

Several geo-bloggers have posts about the earthquake. Harold Asmis of Ontario-GeoFish describes the earthquake as a "big valley-thrust earthquake" or what he calls the "Fist of God". Dave’s Landslide Blog has started compiling reports of landslides related to the earthquake in this landslide prone region of China. And here is the USGS info on the earthquake.

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Geologic Hazards

What Would a Large Earthquake Do to Downtown L.A.?

November 7, 2008 rockman Geologic Hazards Comments Off on What Would a Large Earthquake Do to Downtown L.A.?

USGS LogoFrom the USGS Newsroom:

USGS scientist Ken Hudnut fills us in on how science created the theoretical magnitude 7.8 earthquake behind the Great Southern California ShakeOut—the largest earthquake preparedness drill in U.S. history, coming Nov. 13—and what such an earthquake would do to downtown Los Angeles.

Seems like they did it right wiith this study. They had multiple teams independenlty come up with the ground shaking model, then had different structural engineers who are experts in seismic design of large buildings review the tall buildings in the L.A. area for the design earthquake. They say that buildings would likely come down in the 7.8 magnitude event. Click through to watch the video interview from the USGS.

 

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