Mon Oct 13, F. Flechtner
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More, Shivprasad, Tiwari, Virendra M., Tiwari, Ashutosh, and Ravikumar, M., 2025. Groundwater over-extraction and associated land subsidence in Lucknow, Ganga Basin, India: Insights from space geodetic observations. Near Surface Geophysics, 23(4):420–433, doi:10.1002/nsg.70020.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2025NSGeo..23..420M,
author = {{More}, Shivprasad and {Tiwari}, Virendra M. and {Tiwari}, Ashutosh and {Ravikumar}, M.},
title = "{Groundwater over-extraction and associated land subsidence in Lucknow, Ganga Basin, India: Insights from space geodetic observations}",
journal = {Near Surface Geophysics},
keywords = {aquifer parameter, deformation, Ganga Basin, geodetic, groundwater depletion, InSAR, IPTA, subsidence, time-series},
year = 2025,
month = aug,
volume = {23},
number = {4},
pages = {420-433},
abstract = "{The Gravity Recovery and Climate Experiment (GRACE \& FO) satellite and
in situ data from the Ganga River Basin (GRB) in India, one of
the largest groundwater reservoirs, indicate a significant
decline in water storage resulting from human activities and
excessive groundwater use. This extraction is also causing
widespread land subsidence. We present the patterns of land
deformation, likely linked to groundwater dynamics in and around
Lucknow, one of the largest cities in the GRB, based on data
from Sentinel-1, global navigation satellite system (GNSS) and
in situ measurements collected between 2014 and 2024. The
maximum subsidence rate exceeds {\ensuremath{\sim}}36 mm/year in
Charbagh, Indira Nagar and surrounding areas, where a
significant drop in groundwater levels is recorded, indicating
that groundwater over-extraction is the principal cause of land
subsidence. The independent estimates of skeletal storativity
from subsidence and groundwater variations compare well with
mean skeletal storativity values of 4.73 {\texttimes} 10$^{‑3}$
over the study area. Analyses also indicate irreversible
significant subsidence near the Charbagh area. Space geodetic
observations of deformations caused by hydrological changes
align well with in situ observations. This suggests that a
synergistic combination of methods can enhance understanding of
groundwater storage changes and the associated vertical ground
motion at higher spatial and temporal resolutions.}",
doi = {10.1002/nsg.70020},
adsurl = {https://ui.adsabs.harvard.edu/abs/2025NSGeo..23..420M},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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