Japan Geoscience Union Meeting 2019

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[J] Poster

S (Solid Earth Sciences ) » S-GD Geodesy

[S-GD03] Geodesy General Contributions/Global Geodetic Observing System

Mon. May 27, 2019 10:45 AM - 12:15 PM Poster Hall (International Exhibition Hall8, Makuhari Messe)

convener:Koji Matsuo(Geospatial Information Authority of Japan), Yusuke Yokota(Institute of Industrial Science, The University of Tokyo), Takahiro Wakasugi(Geospatial Information Authority of Japan)

[SGD03-P06] Integrating PSInSAR and Hydrogeophysical Methods for the Characterization of a Earth fissure in the eastern Beijing plain

*Menglin Zhao1, juan wang1, wang xu1, bing hu1, yisheng chen1 (1.Capitai Normal University)

Keywords:PSInSAR, earth fissure, Hydrogeophysical, fault scarps

Modern Earth fissure, ranging from renewed displacement on 1-km-long fault scarps to 9.8-km-long tension cracks, occur in the eastern part of Beijing plain. Most of the failures closely parallel the pre-existing Medio-Pleistocene fault zone. The pattern of earth fissure and the relation to the inferred fault remain controversial. An integrated project, including PSInSAR, geophysical and trenching methods, has been conducted to characterize the formation of earth fissure. The results indicate that this earth fissure was caused by groundwater-level decline rather than natural tectonism. In addition, it is the first time to accurate the initiation and terminal Location of pumping-induced earth fissures within the fault zone.