Geophysical scientists from Hyderabad to study land subsidence issue in Joshimath
The HinduA team of experts from CSIR-National Geophysical Research Institute will be leaving for Joshimath in Uttarakhand, which witnessed land subsidence recently, to conduct subsurface physical mapping of the affected town, a senior scientist has said. Joshimath, the gateway to famous pilgrimage sites like Badrinath and Hemkund Sahib and international skiing destination Auli, is facing a major challenge due to land subsidence. The senior scientist said they will be using multi-channel analysis of surface waves method, a non-destructive seismic method to evaluate material layer thickness and its shear wave velocity, to measure the thickness of the soil. The team will also use ground penetration to find out minor cracks, water saturation of smaller size or fractures in the subsoil or cavities using ground penetrating radar.