Observing coal mining subsidence from JERS-1 permanent scatterer analysis

Jung Hahn Chul, Kyung Duck Min

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

Ground subsidence that occurred in an abandoned coal mining area, Gaeun Korea, is observed by using 25 JERS-1 SAR interferograms from November 1992 to October 1998. We estimate the subsidence on a subset of image corresponding to point-wise permanent scatterers by exploiting a 6-year temporal series of interferometric phases. The SAR measured subsidence rate represents only an average subsidence rate during a period of image acquisition, and complex nonlinear displacements such as an abrupt collapse are excluded. The obtained results are compared with the degree of crack levels obtained by field survey in 1997. The mean line-of-sight subsidence rate was 0.61 cm/yr in the area where the crack level was the most severe, and the largest radar measured subsidence was 11.2 cm. The degree of crack level correlates closely with ground subsidence. A two-dimensional subsidence map is also presented and generally complied with crack levels measured by field surveys.

Original languageEnglish
Title of host publication25th Anniversary IGARSS 2005
Subtitle of host publicationIEEE International Geoscience and Remote Sensing Symposium
Pages4578-4581
Number of pages4
DOIs
Publication statusPublished - 2005
Event2005 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2005 - Seoul, Korea, Republic of
Duration: 2005 Jul 252005 Jul 29

Publication series

NameInternational Geoscience and Remote Sensing Symposium (IGARSS)
Volume7

Other

Other2005 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2005
Country/TerritoryKorea, Republic of
CitySeoul
Period05/7/2505/7/29

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • General Earth and Planetary Sciences

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