Preliminary Report on Seismological and Geotechnical Engineering Aspects of the April 4 2010 Mw 7.2 El Mayor-Cucapah (Mexico) Earthquake

GEER Team Leaders:
Jonathan P. Stewart, UCLA
Scott J. Brandenberg, UCLA

Authors:
Scott J. Brandenberg, UCLA
John Fletcher, CICESE, Ensenada
James R. Gingery, Kleinfelder/UCSD
Kenneth W. Hudnut, USGS
Tim McCrink, CGS
Jorge F. Meneses, Kleinfelder
Diane Murbach, City of San Diego
Tomas Rockwell, SDSU
Jonathan P. Stewart, UCLA
John Tinsley, USGS

Contributors:
David Ayres, UCLA
Geoff Faneros, SDSU
Ling-ho, University of Colorado
Tara Hutchinson, UCSD
Dong Youp Kwak, UCLA
Walter Lopez, UCLA
Eulalia Masanal, University of Barcelona
Karl Mueller, University of Colorado
Cynthia Pridmore, CGS
Carlos Reyes, SIDUE
Emel Seyhan, UCLA
Robert Sickler, USGS
Ronald Spelz, CICESE Ensenada
Lisa Star, UCLA
Orlando Teran, CICESE Ensenada
Mario Valdez, SIDUE
Richard Wood, UCSD

Report for Web Dissemination
Geotechnical Earthquake Engineering Reconnaissance
GEER Association Report No. GEER-023

Version 1. June 15, 2010

Web Report Table of Contents:

1.0. Introduction

2.0.Geological Setting and Seismological Aspects

3.0. Surface Fault Rupture

4.0. Ground Motion

5.0.Liquefaction and Ground Failure

6.0. Irrigation Canals, Levees, and Earthen Dams