標題: Using differential SAR interferometry to map land subsidence: a case study in the Pingtung Plain of SW Taiwan
作者: Hsieh, Chia-Sheng
Shih, Tian-Yuan
Hu, Jyr-Ching
Tung, Hsin
Huang, Mong-Han
Angelier, Jacques
土木工程學系
Department of Civil Engineering
關鍵字: SAR inteferometry;DInSAR;PSInSAR;Land subsidence;Pingtung Plain
公開日期: 1-九月-2011
摘要: Synthetic aperture radar (SAR) interferometry (InSAR) is a geodetic tool widely applied in the studies of earth-surface deformation. This technique has the benefits of high spatial resolution and centimetre-scale accuracy. Differential SAR interferometry (DInSAR) is used to measure ground deformation with repeat-pass SAR images. This study applied DInSAR and persistent scatterers InSAR (PSInSAR) for detecting land subsidence in the Pingtung Plain, southern Taiwan, between 1995 and 2000. In recent years, serious land subsidence occurred along coastal regions of Taiwan as a consequence of over-pumping of underground water. Results of this study revealed that the critical subsidence region is located on the coast near the estuary of Linpien River. It is also found that subsidence was significantly higher during the dry season than the wet season. The maximum annual subsidence rate of the dry season is up to -11.51 cm/year in critical subsidence region and the vertical land movement rate is much slower during the wet season. The average subsidence rates in wet and dry seasons are -0.31 and -3.37 cm/year, respectively. As a result, the subsidence rate in dry seasons is about 3 cm larger than in wet seasons.
URI: http://dx.doi.org/10.1007/s11069-011-9734-7
http://hdl.handle.net/11536/19936
ISSN: 0921-030X
DOI: 10.1007/s11069-011-9734-7
期刊: NATURAL HAZARDS
Volume: 58
Issue: 3
起始頁: 1311
結束頁: 1332
顯示於類別:期刊論文


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  1. 000293406800028.pdf