The seismic controls of geohazards related to the 2015 Nepal earthquake


The Himalaya orogenic belt is the largest continental collision zones on Earth  with high population density and high risk of large earthquakes. The 2015  Mw7.8 Nepal great earthquake caused nearly 9000 deaths, destroyed most of the  infrastructure in the source area, and caused serious geohazards such as  landslide in southern Tibet. The earthquake sequence is the largest along the  Himalaya since digital earthquake recordings have become available. The main  shock and many aftershocks were recorded by the broadband array along the  China-Nepal border and within Nepal deployed by the institute of Tibetan  Plateau Research, Chinese Academy of Sciences. Based on several international  collaborations, we will combine our data with data from the permanent  short-period network of Nepal, and the broadband seismic network of Tibet,  China Earthquake Administration to form a comprehensive dataset of the  aftershock recordings. We will use various data processing techniques,  including earthquake relocation method, waveform modeling, and seismic hazard  analysis to study the relationship between the spatial-temporal distribution  of slide and the source rupture process, the generation and the seasonal  modulation of moderate earthquakes in the recent 50 years, and the prospective  seismic risk in and around Nepal. This study will provide new constraints on  the generation mechanism of earthquake disasters that affect the sustainable  development of the “one belt one road” countries.

Principle Investigator:Bai ling

Project duration:2018.01-2020.12