Assessing and mapping seismic liquefaction hazard, vulnerability, and risk of the transportation infrastructure of mumbai city, India.

Abstract

In this paper, a methodology is presented to conduct seismic liquefaction hazard, vulnerability, and risk assessment (HRVA) and mapping for the transportation infrastructure such as railway stations, bus stops and depots, railway and metro lines, aeroways, bridges, and highways and roads, of Mumbai city by using the data obtained from various resources such as field and lab soil test results along with openstreetmap (OSM) data, on a GIS platform, for different earthquake moment magnitude (Mw). The hazard map indicates that some areas in the city are prone to low to moderate seismic liquefaction while the vulnerability map indicates that highways and roads in the city are highly vulnerable. These hazard and vulnerability maps are combined to produce the seismic liquefaction risk maps for the city. These risk maps can be a source of preliminary information for disaster management response.