Science Service System

Summary of Proposal GEO1684

Titleinvestigating the mutual relation of volcano-tectonic activities with liquefaction and subsidence of mega cities from space
Investigator Shirzaei, Manoochehr - Arizona State University, School of Earth and Space Exploration
Team Member
Professor Shirzaei, Manoochehr - Arizona State University, School of Earth and Space Exploration
SummaryIn recent years, many researchers have studied the interaction between volcanoes and earthquakes (e.g. Hill et al., 2002) .Comparison of earthquake catalogs with volcano eruptions shows that tectonic earthquakes are strongly correlated with volcanic events in time. Also it is reported that land subsidence due to water extraction enhanced occurrence of tectonic earthquakes (e.g. González et al., 2012). The large earthquake can cause widespread liquefaction, which might be more devastating than the earthquake self, in particular in case of Christchurch earthquake 2010 (e.g. Cubrinovski et al., 2011). Many mega cities, such as Tehran, Mexico city, Los Angeles are subject to subsidence,earthquake and volcanic hazards and built on soft sedimentary layers. Thus understanding the relation between these processes is of great importance for realistic estimation of the hazards and setting up a fast response system. Good news is that all of these processes are accompanied by surface deformation measurable by TSX data. Therefore, establishing a monitoring and modeling scheme based on the high spatial and temporal observations of TSX can help to forecast the hazard and mitigate its impact.

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