Author:
Ao Meng,Wang Xiaotian,Sun Ying,Wang Fang,Zhang Huanan,Wei Lianhuan,Liu Shanjun,Yang Dong
Abstract
Southern California, USA, has been suffering severe surface deformation due to its active crustal movement under the north–south compression of the Pacific Plate and North American Plate. Meanwhile, affected by groundwater extraction and recharge, oil exploitation, surface subsidence, uplift, and seasonal deformation occur commonly in this region. In this paper, multi-path SAR datasets were collected to investigate and monitor surface deformation in Southern California. The unified simultaneous least squares (USLS) approach is applied to remove the deformation discontinuity between adjacent SAR image paths. Multiple deformation patterns of structural faults, groundwater withdrawal, and oil exploitation are observed with the interferometric synthetic aperture radar (InSAR) technique. The InSAR-derived results were validated with GPS monitoring data. The correlations between land deformation and groundwater withdrawal, faults, and precipitation were intensively analyzed, finding out and mastering the magnitude and characteristics of ground deformation in Southern California.
Funder
National Natural Science Foundation of China
National Key Laboratory of Science and Technology on Remote Sensing Information and Imagery Analysis, the Beijing Research Institute of Uranium Geology
Fundamental Research Funds for the Central Universities
Geological Disaster Survey Project of Liaoning Province
Subject
General Earth and Planetary Sciences
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