Using InSAR and hydrostratigraphic-simulation to determine land subsidence due to ground water withdrawal in the Pumpernickel Valley-Kelly Creek Basin, north central Nevada.

摘要

Land subsidence due to groundwater withdrawal occurs in almost every part of the world. This has some effect on infrastructures and economic development. In order to better understand this situation, various techniques and applications have been developed by many researchers in the study of subsidence and its related features. This study uses the following techniques: Interferometric Synthetic Aperture Radar (InSAR), a recently developed remote sensing technology, and hydrostratigraphic calculated subsidence from to determine the extent and the relationship of subsidence with stratigraphic units, the possible causes of the subsidence and to derive specific storage coefficients in Pumpernickel Valley - Kelly Creek Basin, Nevada. The study focused mainly on groundwater extraction activities at the Lone Tree mine site for mine dewatering between the years 1992 and 2000. Although both the InSAR derived and the calculated methods applied predicted that a substantial amount of subsidence has occurred during the period under review, there were some discrepancies in the values of subsidence generated. The differences are likely due to assumptions used in the subsidence calculations as well as uncertainties in the representation of the geology and hydrology of the basin.