NASA Finds Ground Water Loss in North India Due to Human Activity |The Hindu News

By , Posted 08/13/09

Link: http://www.hindu.com/thehindu/holnus/001200908132123.htm

"Research was conducted by a team of hydrologists led by Matt Rodell of NASA's Goddard Space Flight Center in Greenbelt, Maryland. Using satellite data they determined that Northern India's underground water is being pumped and consumed by human activities, such as cropland irrigation, and is draining aquifers (1 foot/yr)  faster than natural processes can replenish them.

This research, which is based on data from NASA's Gravity Recovery and Climate Experiment (GRACE) satellites, has been published in the latest issue of Nature. GRACE's two satellites change position in response to variations in the pull of gravity which occurs when there are changes in underground water masses. "