Mon Oct 13, F. Flechtner
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Paswan, Abhilash Kumar, Rao, Narakula Srinivasa, L, Raghu, and Tiwari, Virendra Mani, 2025. Understanding source sustainability in hard rock aquifers using Gravity Recovery and Climate Experiment: A case study from Telangana, India. Near Surface Geophysics, 23(4):287–297, doi:10.1002/nsg.70002.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2025NSGeo..23..287P,
author = {{Paswan}, Abhilash Kumar and {Rao}, Narakula Srinivasa and {L}, Raghu and {Tiwari}, Virendra Mani},
title = "{Understanding source sustainability in hard rock aquifers using Gravity Recovery and Climate Experiment: A case study from Telangana, India}",
journal = {Near Surface Geophysics},
keywords = {GRACE, Groundwater storage, Hard rock aquifers, Telangana, Terrestrial water storage},
year = 2025,
month = aug,
volume = {23},
number = {4},
pages = {287-297},
abstract = "{The rise in groundwater extraction, exacerbated by climate change, poses
a significant sustainability threat, particularly in hard rock
terrains with limited storage capacity. In Telangana, India, a
region characterized by semi-arid climatic conditions and
dominated by crystalline hard rock aquifers across approximately
85\% of its geographical area, groundwater serves as a primary
water source. An analysis of terrestrial water storage (TWS)
over Telangana for the period 2002{\textendash}2020 reveals
pronounced seasonality and significant inter-annual variability.
This inter-annual variability closely reflects the region's
rainfall patterns and anthropogenic water extraction and is
linked to El Ni{\~n}o-Southern Oscillation (ENSO) events.
Positive TWS anomalies (TWSA) are associated with the Kharif
season and the southwest monsoon, whereas negative anomalies
correspond to the Rabi and summer seasons, where increased
groundwater extraction for Rabi cropping is prevalent. The study
identifies a strong correlation at a 2-month time lag between
rainfall and TWSA- (R = 0.78) and rainfall and groundwater
storage anomalies (GWSA) (R = 0.71), with the majority of TWS
changes attributable to groundwater storage, showing a strong
correlation with observed water levels. The TWS data effectively
capture drought events, demonstrating the utility of Gravity
Recovery and Climate Experiment (GRACE) in understanding water
resource sustainability in the region. These findings underscore
the value of GRACE data in complementing observed datasets for
informed decision-making in water resource management.}",
doi = {10.1002/nsg.70002},
adsurl = {https://ui.adsabs.harvard.edu/abs/2025NSGeo..23..287P},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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