Information on geotechnical impacts—landslides and liquefaction—from the April 25, 2015, Nepal earthquake.


GEER Report Now Available

July 29, 2015 by  
Filed under Geotechnical Impacts

In May and June of 2015, a team put together by the Geotechnical Extreme Events Reconnaissance (GEER) Association visited Nepal to evaluate the geotechnical damage and effects spurred by the recent earthquake sequence. Landslides, ground failures, damage to hydropower projects, roadways, bridges...


OSU Researchers Study Liquefaction in Nepal

July 9, 2015 by  
Filed under Geotechnical Impacts

Posted by Patrick Bassal 7/8/15   Dr. Ben Mason and Dr. Deepak Rayamahji, geotechnical earthquake engineering researchers from Oregon State University, recently returned from a trip in Nepal, where they studied the liquefaction effects triggered by the M7.8 earthquake and subsequent aftershocks....


UPDATE: Landslides (General Observations)

July 6, 2015 by  
Filed under Geotechnical Impacts

Updated Map of Landslides Triggered by Ghorka Earthquake and Aftershocks Posted by Patrick Bassal and Ashly Cabas 7/6/15   An updated landslide intensity map (including landslides caused by both the 25 April Ghorka Earthquake and the 12 May Dolakha Earthquake) has been posted to the Earthquakes...


Evidence of Liquefaction: Kathmandu Valley

May 29, 2015 by  
Filed under Geotechnical Impacts

Posted by Manika Maharjan 5/20/15 Kathmandu valley which consists of three districts, Kathmandu, Lalitpur, and Bhaktapur, was once a big lake with about 500 m thickness of soft clay. There have been numerous studies on Liquefaction susceptibility of Kathmandu valley (Piya 2004). However, the liquefaction...


Assessment of Site Effects: Kathmandu Valley

May 28, 2015 by  
Filed under Geotechnical Impacts

Compilation of site effects observations in Kathmandu valley and adjacent regions (Pre-Gorkha Earthquake) Posted by Ashly Cabas 5/18/15 A study of local amplification effect of soil layers on ground motion in the Kathmandu Valley using microtremor analysis_Paudyal et al. (2012) Site response of the Ganges...


Landslides: Kali Gandaki River

May 25, 2015 by  
Filed under Curated Topics, Geotechnical Impacts

Posted by Diane Moug on 24-May-2015 Links to articles concerning the landslide along the Kali Gandaki River, which has blocked flow and damed the river. From Times of India: May 24, 2015: http://timesofindia.indiatimes.com/world/south-asia/Nepal-landslide-blocks-river-raises-fears-of-flood-reaching-India/articleshow/47403459.cms? May...


Earth Dam Performance

May 25, 2015 by  
Filed under Geotechnical Impacts

Findings Concerning Earth Dam and Hydroelectric Power Plant Performance after the Gorkha Earthquake Posted by Patrick Bassal 5/24/15


Strong Ground Motion data from Nepal’s mainshock and two larger aftershocks

May 19, 2015 by  
Filed under Geotechnical Impacts

Posted by Ashly Cabas 19-May-2015 The Center for Engineering Strong Motion Data (CESMD) has made available strong motion records from the station NQ.KATNP (www.strongmotioncenter.org). The following links lead to strong ground motion data from Nepal’s mainshock and two larger aftershocks. (1) Magnitude...


Preliminary Geotechnical Damage Survey

May 19, 2015 by  
Filed under Geotechnical Impacts

Posted by Brett Maurer 19-May-2015 The following is a preliminary survey of geotechnical damage, to include observations  of: Liquefaction/lateral spreading Ground settlement Ground-failure induced building damage Landslides Retaining wall and pavement failures Damage to an earth dam Possible site-response...


Pre-Gorkha EQ Landslides in Nepal (2)

May 19, 2015 by  
Filed under Geotechnical Impacts

Posted by Diane Moug 18-May-2015 Natural and human-induced landsliding in the Garhwal Himalaya of northern India Patrick L. Barnard, Lewis A. Owen, Milap C. Sharma, Robert C. Finkel Geomorphology 40 (2001) 21-35 This paper looks at the effects of a M 6.6 earthquake that took place March 28th, 1999 in...


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