Mon Oct 13, F. Flechtner
• Sorted by Date • Sorted by Last Name of First Author •
Liu, Renli, Li, Jiancheng, Fok, Hok Sum, Shum, C. K., and Li, Zhao, 2014. Earth Surface Deformation in the North China Plain Detected by Joint Analysis of GRACE and GPS Data. Sensors, 14(10):19861–19876, doi:10.3390/s141019861.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2014Senso..1419861L,
author = {{Liu}, Renli and {Li}, Jiancheng and {Fok}, Hok Sum and {Shum}, C.~K. and {Li}, Zhao},
title = "{Earth Surface Deformation in the North China Plain Detected by Joint Analysis of GRACE and GPS Data}",
journal = {Sensors},
keywords = {GRACE, GPS, time-variable gravity field, loading, surface deformation},
year = 2014,
month = oct,
volume = {14},
number = {10},
pages = {19861-19876},
abstract = "{Mass redistribution of the Earth causes variable loading that deforms
the solid Earth. While most recent studies using geodetic
techniques focus on regions (such as the Amazon basin and the
Nepal Himalayas) with large seasonal deformation amplitudes on
the order of 1-4 cm due to hydrologic loading, few such studies
have been conducted on the regions where the seasonal
deformation amplitude is half as large. Here, we use joint GPS
and GRACE data to investigate the vertical deformation due to
hydrologic loading in the North China Plain, where significant
groundwater depletion has been reported. We found that the GPS-
and GRACE-derived secular trends and seasonal signals are in
good agreement, with an uplift magnitude of 1-2 mm/year and a
correlation of 85.0\%-98.5\%, respectively. This uplift rate is
consistent with groundwater depletion rate estimated from GRACE
data and in-situ groundwater measurements from earlier report
studies; whereas the seasonal hydrologic variation reflects
human behavior of groundwater pumping for agriculture irrigation
in spring, leading to less water storage in summer than that in
the winter season. However, less than 20\% of weighted root-
mean-squared (WRMS) reductions were detected for all the
selected GPS stations when GRACE-derived seasonal deformations
were removed from detrended GPS height time series. This
discrepancy is probably because the GRACE-derived seasonal
signals are large-scale, while the GPS-derived signals are local
point measurements.}",
doi = {10.3390/s141019861},
adsurl = {https://ui.adsabs.harvard.edu/abs/2014Senso..1419861L},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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