Journal
REMOTE SENSING
Volume 8, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/rs8070559
Keywords
InSAR; GPS; 3D surface displacement field; ESISTEM; 2015 Gorkha earthquake
Categories
Funding
- State Key Development Program for Basic Research of China [2013CB733304]
- National Natural Science Foundation of China [41274019]
- Fundamental Research Funds for the Central Universities [2042016kf0161]
- State Key Laboratory of Geodesy and Earth's Dynamics, Institute of Geodesy and Geophysics, CAS [L09-05]
- China Scholarship Council [201406275123]
Ask authors/readers for more resources
Three-dimensional surface displacement field associated with the 25 April 2015 Gorkha, Nepal earthquake is derived from an integration of Interferometric Synthetic Aperture Radar (InSAR) and Global Positioning System (GPS) measurements, with an extended SISTEM (Simultaneous and Integrated Strain Tensor Estimation From Geodetic and Satellite Deformation Measurements) approach (ESISTEM) proposed in this study. In ESISTEM approach, both surrounding InSAR and GPS measurements can be used as constraints in deriving surface displacements; while only surrounding GPS measurements are used in SISTEM approach. Besides the constraints from surrounding GPS measurements, the ESISTEM approach makes surrounding InSAR measurements available for constraining the derived deformations based on surface elastic theory for the first time. From the north to the south, derived surface displacement field shows prevailing southward horizontal deformations, and gradually varied vertical deformations ranging from -0.95 to 1.40 m within 120 km to the north of Kathmandu. This reveals that ruptures of Main Himalayan thrust (MHT) system were confined in subsurface and did not propagate to the Main Frontal Thrust (MFT) fault, in accordance with field investigation as well as geodetic and seismic studies. Relation between vertical deformations and earthquake-induced landslides is briefly discussed.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available