Aftershock Sequence
The period prior to 22/2/2011 contained fourteen events of magnitude 5.0 to 5.6 and forty events of magnitude 4.5 to 5.0. Since 22/2/2011 there have been five aftershocks between 5.0 and 6.3 and eighteen between 4.5 and 5.0. Figure 1. Christchurch area aftershock sequence – Sep 2010 – Mar 2011. Christchurch is built […]
The M9.0 Japan Earthquake: Lessons for California and San Diego
Video 1. The M9.0 Japan Earthquake: Lessons for California and San Diego from EERI on Vimeo. The video includes the following panel of distinguished speakers who provided an overview and responded to questions at this meeting: Dr. Jorge Meneses (Kleinfelder) – provided an overview of the mega-earthquake and tsunami, and presented his findings and observations from […]
GEER Reconnaissance Reports
Read the Reports: April 5, 2011: Geotechnical Quick Report on the Kanto Plain Region during the March 11, 2011, Off Pacific Coast of Tohoku Earthquake, Japan (6.1 MB PDF) May 2, 2011: Preliminary Observations of Levee Performance and Damage following the March 11, 2011 Tohoku Offshore Earthquake, Japan (2.6 MB PDF) May 17, 2011: Preliminary Observations of the Effects […]
GEER Reconnaissance Video
See the GEER Advance Team Reconnaissance Video: GEER Team Geotechnical Extreme Event Reconnaissance
Geotechnical Observations from Sendai, Japan
June 3, 2011: After meeting our Japanese colleagues on Friday, June 3rd at the hotel, we took the train from Narita Hilton Hotel to Tokyo and then Sendai. In Sendai, we first visited the Tohoku Regional Development Bureau (MLIT). They described the existing emergency response protocols for earthquake and tsunami. We then headed to the Sendai-Tohbu […]
Observations from FHWA/UJNR/EERI Reconnaissance Team for Bridge Damage Investigation
US TeamW. Philip Yen, US side Chair of T/C G, Federal Highway AdministrationIan Buckle, Professor, University of Nevada, RenoDavid Frost, Professor, Georgia Institute of Technology, AtlantaLee Marsh, Senior Project Manager, Berger/ABAM Engineers, SeattleShideh Dashti, Assistant Professor, University of Colorado, BoulderEric Monzon, Research Assistant, University of Nevada, Reno Japan TeamTetsuro Kuwabara, Japan side Chair of T/C […]
Geotechnical Effects of the Mw 9.0 Tohoku, Japan, Earthquake of March 11, 2011
Read the Report: Geotechnical Effects of the Mw 9.0 Tohoku, Japan, Earthquake of March 11, 2011 (8.0 MB PDF)
Re: Initial Survey, 11 March 2011 Tohoku Earthquake and Tsunami
Read the Report: Re: Initial Survey, 11 March 2011 Tohoku Earthquake and Tsunami (3.27 MB PDF)
MTA Field Report (in Turkish)
Read the Report: 23 EKİM 2011 VAN DEPREMİ SAHA GÖZLEMLERİ VE KAYNAK FAYA İLİŞKİN ÖN DEĞERLENDİRMELER (6.8 MB PDF)
Photos of Observed Ground Deformation
Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7.