Geotechnical Field Reconnaissance: Gorkha (Nepal) Earthquake of April 25 2015 and Related Shaking Sequence

An assessment of liquefaction potential for the Kathmandu Valley considering seasonal variability of the groundwater table has been conducted. To gain deeper understanding seven historical liquefaction records located adjacent to borehole datapoints (published in SAFER/GEO-591) were used to compare two methods for the estimation of liquefaction potential. Standard Penetration Test (SPT) blowcount data from 75 boreholes inform the new liquefaction potential maps. Various scenarios were modelled, i.e., seasonal variation of the groundwater table and peak ground acceleration. Ordinary kriging, implemented in ArcGIS, was used to prepare maps at urban scale. Liquefaction potential calculations using the methodology from (Sonmez, Environ Geol 44:862–871, 2003) provided a good match to the historical liquefaction records in the region. Seasonal variation of the groundwater table is shown to have a significant effect on the spatial distribution of calculated liquefaction potential across the valley. The less than anticipated liquefaction manifestations due to the Gorkha earthquake are possibly due to the seasonal water table level.

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Improving the Nepalese Building Code Based on Lessons Learned From the 2015 M7.8 Gorkha Earthquake

Karmacharya¹,

Silva

Brzev

et al. 2018

Impacts and Insights of Gorkha Earthquake in Nepal

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Geotechnical Field Reconnaissance: Gorkha (Nepal) Earthquake of April 25 2015 and Related Shaking Sequence

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Earthquakes as Events of Inter- and Intra-disciplinary Character—With Special Reference to the Gorkha 2015 Earthquake in Nepal

Earthquakes as Events of Inter- and Intra-disciplinary Character—With Special Reference to the Gorkha 2015 Earthquake in Nepal

Liquefaction potential for the Kathmandu Valley, Nepal: a sensitivity study

Improving the Nepalese Building Code Based on Lessons Learned From the 2015 M7.8 Gorkha Earthquake

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