Earth Fissures in Su–Xi–Chang Region, Jiangsu, China

Wang, Guang-ya; You, Greg; Zhu, Jin-qi; Yu, Jun; Li, Wei

Title: Earth Fissures in Su–Xi–Chang Region, Jiangsu, China
Creator: Wang, Guang-ya; You, Greg; Zhu, Jin-qi; Yu, Jun; Li, Wei
Date: 2016
Type: Text; Journal article; Review
Identifier: http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/104257
Identifier: vital:11051
Identifier: https://doi.org/10.1007/s10712-016-9388-9
Identifier: ISSN:01693298
Abstract: The earth fissures in the Su-Xi-Chang area are caused by differential land subsidence due to long-term excessive groundwater withdrawal and controlled by the bedrock ridge or cliff underlying. There have been more than 15 earth fissures in the area since 1989. The field investigations have lasted for more than 20 years. The earth fissures generally have a main fissure and a number of secondary ones parallel to the main one. The main fissure (crack) has a scarp, is steeply dipping, and can be more than 2000 m long. Geophysical surveys (2D or 3D seismic investigation, controlled source audio frequency magnetotelluric sounding, and electric sounding) combined with geological drilling are effective for the investigation of earth fissures. Geodetic leveling is effective to monitor the ground deformation across the earth fissure, so is the extensometer for the opening of the fissure. The activities of earth fissures are directly related to different stages of land subsidence and controlled by geological abnormalities. Most earth fissures in the area are still active. © 2016, Springer Science+Business Media Dordrecht.
Publisher: Springer Netherlands
Relation: Surveys in Geophysics Vol. 37, no. 6 (2016), p. 1095-1116
Rights: This metadata is freely available under a CCO license
Subject: 0201 Astronomical and Space Sciences; 0404 Geophysics; Earth fissure; Geological investigation; Geophysical survey; Groundwater extraction; Su–Xi–Chang (SXC)
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