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Updated: Dec 22, 2025

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
Published on: August 5, 2016
Using integrated geophysics data set to delineate Phetchabun active fault in Thailand
Rungroj Arjwech1, Wanwisa Boonsungnern1, Pakawat Sriwangpon1
1Department of Geotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen, 40002, Thailand.
Abstract:
In order to precisely locate active faults in Phetchabun basin, measured data started with a remote sensing and digital elevation model (DEM) methods in order to find traces of potentially active faults and potential sites for field investigations. Geomorphological and geological field investigations were subsequently conducted according to remote sensing method and map interpretations in order to identify suitable sites for gravity survey and 2D-3D electrical resistivity tomography. From this dataset, the gravity models reveal subsurface structures of density contrast and can identify vertical fault plane. The ERT inversion images show zones of high and low resistivity interpreted as fault plane. Integrated three geophysical surveys can provide useful information of the active faults, which have implications on paleo-earthquake investigation in Phetchabun basin.
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