scholarly journals Over Exploitation of Groundwater in the Centre of Amman Zarqa Basin—Jordan: Evaluation of Well Data and GRACE Satellite Observations

Resources ◽  
2015 ◽  
Vol 4 (4) ◽  
pp. 819-830 ◽  
Author(s):  
Sana’a Al-Zyoud ◽  
Wolfram Rühaak ◽  
Ehsan Forootan ◽  
Ingo Sass
Keyword(s):  
Satellite Observations ◽  
Grace Satellite ◽  
Well Data ◽  
Over Exploitation ◽  
Amman Zarqa Basin

scholarly journals GROUNDWATER STORAGE CHANGE ESTIMATION USING GRACE SATELLITE DATA IN INDUS BASIN

2020 ◽  
Vol 1 (1) ◽  
pp. 10-15
Author(s):  
Muhammad Salam ◽  
Muhammad Jehanzeb Masud Cheema ◽  
Wanchang Zhang ◽  
Saddam Hussain ◽  
Azeem Khan ◽  
...  
Keyword(s):  
Water Table ◽  
Land Surface ◽  
Large Scale ◽  
Water Storage ◽  
Indus Basin ◽  
Groundwater Storage ◽  
Grace Satellite ◽  
Over Exploitation ◽  
Flooding Events ◽  
Storage Change

Over exploitation of Ground Water (GW) has resulted in lowering of water table in the Indus Basin. While waterlogging, salinity and seawater intrusion has resulted in rising of water table in Indus Basin. The sparse piezometer network cannot provide sufficient data to map groundwater changes spatially. To estimate groundwater change in this region, data from Gravity Recovery and Climate Experiment (GRACE) satellite was used. GRACE measures (Total Water Storage) TWS and used to estimate groundwater storage change. Net change in storage of groundwater was estimated from the change in TWS by including the additional components such as Soil Moisture (SM), Surface water storage (Qs) and snowpack equivalent water (SWE). For the estimation of these components Global Land Data Assimilation system (GLDAS) Land Surface Models (LSMs) was used. Both GRACE and GLDAS produce results for the Indus Basin for the period of April 2010 to January 2017. The monitoring well water-level records from the Scarp Monitoring Organization (SMO) and the Punjab Irrigation and Drainage Authority (PIDA) from April 2009 to December 2016 were used. The groundwater results from different combinations of GRACE products GFZ (GeoforschungsZentrum Potsdam) CSR (Center for Space Research at University of Texas, Austin) JPL (Jet Propulsion Laboratory) and GLDAS LSMs (CLM, NOAH and VIC) are calibrated (April 2009-2014) and validated (April 2015-April 2016) with in-situ measurements. For yearly scale, their correlation coefficient reaches 0.71 with Nash-Sutcliffe Efficiency (NSE) 0.82. It was estimated that net loss in groundwater storage is at mean rate of 85.01 mm per year and 118,668.16 Km3 in the 7 year of study period (April 2010-Jan 2017). GRACE TWS data were also able to pick up the signals from the large-scale flooding events observed in 2010 and 2014. These flooding events played a significant role in the replenishment of the groundwater system in the Indus Basin. Our study indicates that the GRACE based estimation of groundwater storage changes is skillful enough to provide monthly updates on the trend of the groundwater storage changes for resource managers and policy makers of Indus Basin.

2010–2012 drought and flood events in the Amazon Basin inferred by GRACE satellite observations

2015 ◽  
Vol 9 (1) ◽  
pp. 096023 ◽  
Author(s):  
Ning Nie ◽  
Wanchang Zhang ◽  
Huadong Guo ◽  
Natarajan Ishwaran
Keyword(s):  
Amazon Basin ◽  
Satellite Observations ◽  
Flood Events ◽  
Drought And Flood ◽  
Grace Satellite

Testing Correlation between Vertical Crustal Movements and Geoid Uplift for North Eastern Polish Border Areas

2017 ◽  
Author(s):  
Kamil Kowalczyk ◽  
Joanna Kuczynska-Siehien
Keyword(s):  
Temporal Variations ◽  
Geoid Height ◽  
Satellite Observations ◽  
Satellite Mission ◽  
Crustal Movements ◽  
North Eastern ◽  
Long Time ◽  
Grace Satellite ◽  
Border Areas ◽  
Vertical Crustal Movements

Long time span of observations from GNSS permanent stations can be used in the development of models of vertical crustal movements. The absolute vertical crustal movement related to the ellipsoid consists of the observed movement with relation to the mean sea level, the eustatic movement and the geoid uplift. The geoid uplift can be determined from GRACE satellite mission observations. The calculated parameters can be compared with the theoretical ones. The aim of this study is to check the correlation between vertical crustal movements and a geoid height variations determined from satellite data. GNSS data, levelling data and satellite observations for north eastern Polish border areas were used as a case study. Temporal variations of geoid were calculated based on the geopotential models from GRACE satellite observations. The obtained results give an overview of a possibility of the proposed method usage.

scholarly journals Detection of human-induced evapotranspiration using GRACE satellite observations in the Haihe River basin of China

2017 ◽  
Vol 44 (1) ◽  
pp. 190-199 ◽  
Author(s):  
Yun Pan ◽  
Chong Zhang ◽  
Huili Gong ◽  
Pat J.-F. Yeh ◽  
Yanjun Shen ◽  
...  
Keyword(s):  
River Basin ◽  
Satellite Observations ◽  
Haihe River Basin ◽  
Haihe River ◽  
Grace Satellite ◽  
The Haihe River Basin
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