TY - GEN
T1 - Observing coal mining subsidence from JERS-1 permanent scatterer analysis
AU - Hahn Chul, Jung
AU - Min, Kyung Duck
PY - 2005
Y1 - 2005
N2 - 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.
AB - 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.
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U2 - 10.1109/IGARSS.2005.1526686
DO - 10.1109/IGARSS.2005.1526686
M3 - Conference contribution
AN - SCOPUS:33745686210
SN - 0780390504
SN - 9780780390508
T3 - International Geoscience and Remote Sensing Symposium (IGARSS)
SP - 4578
EP - 4581
BT - 25th Anniversary IGARSS 2005
T2 - 2005 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2005
Y2 - 25 July 2005 through 29 July 2005
ER -