Pre-Gorkha EQ Landslides in Nepal (1)
The following listings provide resources and information concerning recent landslides that have occurred in Nepal (nearby the Gorkha region), before the April 25, 2015 earthquake. Landslide in Jure Village (Approx. Lat: 27.770 Long: 85.870) Date of Event: 8/2/2014 5.5e6m3 landslide into the Sunkoshi River Valley at the village of Jure. Landslide blocked the Sunkoshi River by creating an approximately […]
Liquefaction Hazard Studies: Kathmandu Valley
Compilation of Liquefaction Hazard Analyses (Pre-Gorkha Earthquake) in Kathmandu Valley Geological database for Liquefaction hazard assessment in Kathmandu Valley; B.K. Piya (2004) Liquefaction Hazard Map of Kathmandu Valley Floor; OCHA Nepal (2008) Liquefaction Potential Analysis of Kathmandu Valley; R Neupane & K. Suzuki (2010) Risk-Sensitive Land Use Plan Final Report: Kathmandu Metro City; EMI (2010) Soil Liquefaction […]
Pre-Gorkha EQ Landslides in Nepal (2)
Natural and human-induced landsliding in the Garhwal Himalaya of northern IndiaPatrick L. Barnard, Lewis A. Owen, Milap C. Sharma, Robert C. FinkelGeomorphology 40 (2001) 21-35This paper looks at the effects of a M 6.6 earthquake that took place March 28th, 1999 in the Garhwal Himalaya. “The earthquake was focused ~10.8 km WNW of Camoli (30.49 […]
Preliminary Geotechnical Damage Survey
The following is a preliminary survey of geotechnical damage, to include observations of: Liquefaction/lateral spreadingGround settlementGround-failure induced building damageLandslidesRetaining wall and pavement failuresDamage to an earth damPossible site-response effects The survey was performed by representatives of the JSCE, JGS, ATC3, and ISSMGE societies. Preliminary Geotechnical Damage Survey Curated topics from the April 25, 2015, Nepal Earthquake to help inform […]
Earth Dam Performance
Findings Concerning Earth Dam and Hydroelectric Power Plant Performance after the Gorkha Earthquake Kulekhani Earth Dam (Approx. Lat: 27.590, Long: 85.156)Date of Observation: 5/10/15This article has been brought to the attention of EERI by Lisa Krain The following article describes observations of the Kulekhani Earth Dam on May 10. It is reported that many cracks have been found […]
Landslides: Kali Gandaki River
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 24, 2015: http://timesofindia.indiatimes.com/india/5-Bihar-districts-on-alert-after-Nepal-landslide/articleshow/47408541.cms May 25, 2015: http://timesofindia.indiatimes.com/india/Flood-alert-in-Bihar-after-Nepal-landslide/articleshow/47409473.cms The BBC: 24-May-2015: http://www.bbc.com/news/world-asia-32859353 Curated topics from the April 25, 2015, Nepal Earthquake to help inform reconnaissance activities, identify impacted regions, and help […]
Assessment of Site Effects: Kathmandu Valley
Compilation of site effects observations in Kathmandu valley and adjacent regions (Pre-Gorkha Earthquake) 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 basin inferred from re-evaluated macroseismic observations from 1897 Shillong, 1905 Kangra and 1934 Nepal Eqs_Hough […]
Evidence of Liquefaction: Kathmandu Valley
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 triggered by the M7.8 Gorkha earthquake appears to be limited and localized. The localized areas along the […]
UPDATE: Landslides (General Observations)
Updated Map of Landslides Triggered by Ghorka Earthquake and Aftershocks 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 without Frontiers blog. Approximately 5600 landslides have been mapped as of 10 June 2015. Figure 1. Updated landslide intensity […]