The relationship between land subsidence and groundwater harvesting using InSAR

Subsidence troughs sudden meeting ground with considerable depth that occurred from natural causes and human and financial loss of life and is associated with. In many parts of the world as well as in plains areas of Iran, Rafsanjan, Mahyar Isfahan, Kabudrahang Hamedan, Yazd, Sirjan and wolves have been reported cases of sinkholes observed. Mainly limestone and karst subsidence in areas or in areas with excessive withdrawals of groundwater occur. Because this phenomenon may be associated with human and financial losses are taken into account. This phenomenon has caused problems for farmers, the destruction of communication lines and infrastructure, and some other issues Interferometric synthetic aperture radar (InSAR) has great potential to detect and quantify land subsidence caused by aquifer system compaction. InSAR maps with high spatial detail and resolution of range displacement (± 10 mm in change of land surface elevation) were developed for a groundwater basin (1000 km2) in region, using radar data collected from the ERS-2 satellite. These data allow comprehensive comparison between two years subsidence patterns. The InSAR- detected patterns are generally consistent with predictions based on a coupled model of groundwater flow and aquifer system compaction.