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InSAR and Geophysics for Dam Safety: Seeing the Invisible, Understanding the Hidden

Posted on August 27, 2026
/Under Dr. Sanjay Rana

Figure 1. Conceptual view of satellite InSAR monitoring around a dam and reservoir. The value of the approach lies in detecting subtle surface movement over a wide area and then directing detailed investigation to the…continue reading →

Airborne Geophysical Surveys: Mapping the Subsurface from the Sky

Posted on June 25, 2026
/Under Dr. Sanjay Rana

Dr. Sanjay Rana, PARSAN Overseas Pvt. Ltd. | Blog article draft Some of the most important questions in a major project sit hundreds of metres below ground and spread across hundreds of square kilometres. Where…continue reading →

Geophysics: Seeing the Invisible Beneath Our Past

Posted on January 9, 2026
/Under Uncategorized

Geophysics: Seeing the Invisible Beneath Our Past Every archaeological site and heritage monument is only a partial revelation of history. What we see on the surface- ruins, standing structures, sculpted stones, walls, temples, forts, mounds,…continue reading →

Corridor Geophysics Packages for Alignment Risk Reduction

Posted on December 30, 2025
/Under Dr. Sanjay Rana

(An article to benefit NHAI EPC/HAM contractors, major design consultants, state PWD highway programs. By Dr Sanjay Rana, sanjay@parsan.biz) Linear infrastructure- highways, railways, metros, canals, transmission corridors, pipelines- fails or gets delayed for one core…continue reading →

Are You Still Using Traditional Surveys for PSPs? Here’s What You’re Missing

Posted on July 22, 2025
/Under Dr. Sanjay Rana

India’s energy future is riding on Pumped Storage Projects (PSPs). With over 47 GW of PSP capacity in the pipeline, precise and efficient site investigations are no longer optional, they're critical! But if your project…continue reading →

Harnessing AI and Machine Learning in Geophysical Investigations

Posted on November 28, 2024
/Under Dr. Sanjay Rana

Introduction Overview of Traditional Geophysical Methods in Infrastructure Investigation Geophysical investigations play a crucial role in subsurface investigations for various infrastructure projects such as roadways, bridges, tunnels, and buildings. Certain methods are also used to…continue reading →