Abstract Views :230 |
PDF Views:85
Authors
Affiliations
1 National Remote Sensing Centre, ISRO, Hyderabad 500 625, IN
Source
Current Science, Vol 107, No 5 (2014), Pagination: 832-844
Abstract
Monthly, seasonal and annual hydrologic signals obtained by Gravity Recovery and Climate Experiment (GRACE mission) satellites are analysed and compared with storage variables of soil moisture signatures of Monsoon Asia Integrated Regional Study (MAIRS) mission and groundwater level information of Central Ground Water Board, to observe depletion trends of groundwater in the Gangetic plain, at regional scale. While the seasonal time-series showed seasonality in the groundwater storage change, the annual trends depict a decline in this region. Further, the results showed that groundwater storage had declined at a rate 3.33 mm/month from 2005 to 2010. These time-series comparisons of storage variables have agreeable R2 (coefficient of determination) and r (correlation coefficient) at various temporal cycles.
Keywords
Groundwater Storage Change, Satellite Missions, Soil Moisture, Storage Variables.
Full Text
