Mon Oct 13, F. Flechtner
• Sorted by Date • Sorted by Last Name of First Author •
Liu, Renli, Zou, Rong, Li, Jiancheng, Zhang, Caihong, Zhao, Bin, and Zhang, Yakun, 2018. Vertical Displacements Driven by Groundwater Storage Changes in the North China Plain Detected by GPS Observations. Remote Sensing, 10(2):259, doi:10.3390/rs10020259.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2018RemS...10..259L,
author = {{Liu}, Renli and {Zou}, Rong and {Li}, Jiancheng and {Zhang}, Caihong and {Zhao}, Bin and {Zhang}, Yakun},
title = "{Vertical Displacements Driven by Groundwater Storage Changes in the North China Plain Detected by GPS Observations}",
journal = {Remote Sensing},
keywords = {GPS, GRACE, vertical displacement, groundwater storage},
year = 2018,
month = feb,
volume = {10},
number = {2},
eid = {259},
pages = {259},
abstract = "{The North China Plain (NCP) has been experiencing the most severe
groundwater depletion in China, leading to a broad region of
vertical motions of the Earth's surface. This paper explores the
seasonal and linear trend variations of surface vertical
displacements caused by the groundwater changes in NCP from 2009
to 2013 using Global Positioning System (GPS) and Gravity
Recovery and Climate Experiment (GRACE) techniques. Results show
that the peak-to-peak amplitude of GPS-derived annual variation
is about 3.7\raisebox{-0.5ex}\textasciitilde6.0 mm and is highly
correlated (R > 0.6 for most selected GPS stations) with results
from GRACE, which would confirm that the vertical displacements
of continuous GPS (CGPS) stations are mainly caused by
groundwater storage (GWS) changes in NCP, since GWS is the
dominant component of total water storage (TWS) anomalies in
this area. The linear trends of selected bedrock-located IGS
CGPS stations reveal the distinct GWS changes in period of
2009-2010 (decrease) and 2011-2013 (rebound), which are
consistent with results from GRACE-derived GWS anomalies and in
situ GWS observations. This result implies that the rate of
groundwater depletion in NCP has slowed in recent years. The
impacts of geological condition (bedrock or sediment) of CGPS
stations to their results are also investigated in this study.
Contrasted with the slight linear rates
(-0.69\raisebox{-0.5ex}\textasciitilde1.5 mm/a) of bedrock-
located CGPS stations, the linear rates of sediment-located CGPS
stations are between -44 mm/a and -17 mm/a. It is due to the
opposite vertical displacements induced by the Earth surface's
porous and elastic response to groundwater depletion. Besides,
the distinct renewal characteristics of shallow and deep
groundwater in NCP are discussed. The GPS-based vertical
displacement time series, to some extent, can reflect the
quicker recovery of shallow unconfined groundwater than the deep
confined groundwater in NCP; through one month earlier to attain
the maximum height for CGPS stations nearby shallow groundwater
depression cones than those nearby deep groundwater depression
cones.}",
doi = {10.3390/rs10020259},
adsurl = {https://ui.adsabs.harvard.edu/abs/2018RemS...10..259L},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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