Asian Surveying & Mapping
Breaking News
Pioneer of UAE geospatial technologies gets Lifetime Achievement Award
AMSTERDAM - Lt. General (Retd) Dr. Khalifa Al Romaithi...
Beidou-3 navigation satellite launched on Long March 3B
China successfully launched a new navigation satellite on Saturday....
Saudi Arabia Interested in Russia’s Manned Space Missions — Roscosmos
MOSCOW - Saudi Prince Sultan bin Salman bin Abdulaziz...
Shanghai GNSS Firm Opens U.S. Office
Shanghai based GNSS technology and solutions company, Shanghai Huace...
RoboSense & Partners Launch Smart Sensor Systems for Smart Transportation at Shanghai Auto Show
Shanghai, China – RoboSense (Suteng Innovation Technology Co., Ltd)...
China to Enhance International Space Cooperation
BEIJING - China will promote aerospace development, strengthen international...
Alteryx Expands APAC Presence to Amplify Analytics in Japan
TOKYO and IRVINE, Calif.- Alteryx, Inc. (NYSE: AYX), revolutionizing business...
UAE MoID IT Director Hessa Al Suwaidi on building the foundations for AI
The Ministry of Infrastructure Development is tasked with building...
In a first, US Appoints Indian to Advice it on Earth-Observation and Remote-Sensing Policies
India’s growing might in earth observation, remote sensing, mapping,...
Satellite Research Centre Launched to Advance Australian Space Industry
The Australian space industry has received a $245m injection...

Kolkata, situated on the banks of the Hooghly River in the Indo-Gangetic plain, is home to an estimated 14.1 million people. But like most cities in India, it’s worried about depleting groundwater. Data from the Kolkata Municipal Corporation report of 2007 shows a fall in groundwater from 11 meters to 7 meters between 1958 to 2003. Now, an alarming study shows that this depletion could slowly sink the city due to land subsidence.

In this study, researchers from the Anna University, Chennai, used a microwave-based remote-sensing technique to assess changes in Kolkata’s land subsidence for the years 2003, 2007 and 2011.

“The remote-sensing technique allows the detection and monitoring of ground settlements by generating velocity maps of the underground deformation with high accuracy up to the millimeter”, explained Dr. Elango, professor at Anna University and one of the authors of the study.