Journal
JOURNAL OF GEODYNAMICS
Volume 75, Issue -, Pages 34-40Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jog.2014.02.002
Keywords
Ground subsidence; Ground fissures; SBAS-InSAR; Datong; Groundwater; Fault activity
Categories
Funding
- National Natural Science Foundation of China (NSFC) [41304016, 41372375, 41274004, 41274005]
- special earthquake research project of the China Earthquake Administration [201208009]
- National Program on Key Basic Research Project (973 Program) [2014CB744703]
- China Postdoctoral Science Foundation Project [2013M530412]
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The Datong Basin is located to the north of the Fenwei Graben Basin, where ground fissures and subsidence are common geological hazards. The Datong Basin is also one of China's main energy bases and is known as the hometown of coal. In this study, the small baseline subset InSAR technique was used to process 40 scenes of Envisat ASAR images that cover this area. The magnitude and distribution of subsidence in the Datong Basin were obtained. Additionally, the relationships among the regional land subsidence, ground fissures and fault activity were addressed. The results reveal that Datong ground subsidence is affected by the groundwater exploitation and the nearby faults. The Datong ground fissures are controlled by regional fault activity (e.g., seismic activity) and its interaction with the ground subsidence. Meanwhile, the influence of surface precipitation on ground fissure activity was analyzed. The differential subsidence on both sides of the ground fissures was also studied. (C) 2014 Elsevier Ltd. All rights reserved.
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