Answer: Ground Penetrating Radar
Notes: Recently, a team from Indian Institute of Technology (IIT) Kanpur used Ground Penetrating Radar (GPR) to detect ancient Buddhist stupas and buried structures in Yamuna Nagar district, Haryana. Ground Penetrating Radar (GPR) is a high-resolution geophysical method that uses high-frequency electromagnetic waves to explore underground features. These waves interact with subsurface materials and are reflected, refracted, or scattered based on their type. GPR typically detects features up to a depth of around 10 meters. It is useful for locating bedrock depth, water tables, soil layers, buried stream channels, cavities, and fractures.
