Spatio-Temporal Subsidence Estimation of Jharia Coal Field, India Using SBAS-Dinsar with Cosmo-Skymed Data

Abstract

Small Baseline Subset (SBAS) technique is one of most accurate methods in Differential SAR interferometry (DInSAR) to estimate the surface deformation. In this paper, this technique has been applied on 23 X-band COSMO-SKyMed (CSK) datasets during 2011 – 2016 to get the annual subsidence rate over Jharia Coal Field (JCF), India. Validation of the subsidence result with ground water level data strongly indicates the predominant underground coal mining induced surface deformation over Jharia area.