A tug‐of‐war within the hydrologic cycle of a continental freshwater basin

2021 ◽  
Author(s):  
A. D. Gronewold ◽  
H. X. Do ◽  
Y. Mei ◽  
C. A. Stow
Keyword(s):  
Hydrologic Cycle

scholarly journals Groundwater Depletion Signals in the Beqaa Plain, Lebanon: Evidence from GRACE and Sentinel-1 Data

2021 ◽  
Vol 13 (5) ◽  
pp. 915
Author(s):  
Elias C. Massoud ◽  
Zhen Liu ◽  
Amin Shaban ◽  
Mhamad Hage
Keyword(s):  
Snow Water Equivalent ◽  
Water Storage ◽  
Hydrologic Cycle ◽  
Groundwater Depletion ◽  
Satellite Mission ◽  
Groundwater Storage ◽  
Significant Drop ◽  
Monitoring Wells ◽  
High Productivity ◽  
Soil Moisture Storage

Regions with high productivity of agriculture, such as the Beqaa Plain, Lebanon, often rely on groundwater supplies for irrigation demand. Recent reports have indicated that groundwater consumption in this region has been unsustainable, and quantifying rates of groundwater depletion has remained a challenge. Here, we utilize 15 years of data (June 2002–April 2017) from the Gravity Recovery and Climate Experiment (GRACE) satellite mission to show Total Water Storage (TWS) changes in Lebanon’s Beqaa Plain. We then obtain complimentary information on various hydrologic cycle variables, such as soil moisture storage, snow water equivalent, and canopy water storage from the Global Land Data Assimilation System (GLDAS) model, and surface water data from the largest body of water in this region, the Qaraaoun Reservoir, to disentangle the TWS signal and calculate groundwater storage changes. After combining the information from the remaining hydrologic cycle variables, we determine that the majority of the losses in TWS are due to groundwater depletion in the Beqaa Plain. Results show that the rate of groundwater storage change in the West Beqaa is nearly +0.08 cm/year, in the Rashaya District is −0.01 cm/year, and in the Zahle District the level of depletion is roughly −1.10 cm/year. Results are confirmed using Sentinel-1 interferometric synthetic aperture radar (InSAR) data, which provide high-precision measurements of land subsidence changes caused by intense groundwater usage. Furthermore, data from local monitoring wells are utilized to further showcase the significant drop in groundwater level that is occurring through much of the region. For monitoring groundwater storage changes, our recommendation is to combine various data sources, and in areas where groundwater measurements are lacking, we especially recommend the use of data from remote sensing.

12. Triple Oxygen Isotope Systematics in the Hydrologic Cycle

2019 ◽  
pp. 401-428
Author(s):  
Jakub Surma ◽  
Sergey Assonov ◽  
Michael Staubwasser
Keyword(s):  
Oxygen Isotope ◽  
Hydrologic Cycle ◽  
Isotope Systematics

Orbital- and millennial-scale changes in the hydrologic cycle and vegetation in the western African Sahel: insights from individual plant wax δD and δ13C

2010 ◽  
Vol 29 (23-24) ◽  
pp. 2996-3005 ◽  
Author(s):  
Eva M. Niedermeyer ◽  
Enno Schefuß ◽  
Alex L. Sessions ◽  
Stefan Mulitza ◽  
Gesine Mollenhauer ◽  
...  
Keyword(s):  
Hydrologic Cycle ◽  
Individual Plant ◽  
Plant Wax ◽  
African Sahel ◽  
Millennial Scale

scholarly journals Sensitivities of the hydrologic cycle to model physics, grid resolution, and ocean type in the aquaplanet C ommunity A tmosphere M odel

2017 ◽  
Vol 9 (2) ◽  
pp. 1307-1324 ◽  
Author(s):  
James J. Benedict ◽  
Brian Medeiros ◽  
Amy C. Clement ◽  
Angeline G. Pendergrass
Keyword(s):  
Hydrologic Cycle ◽  
Grid Resolution

scholarly journals Research on the hydrologic cycle characteristics using stable isotopes of oxygen and hydrogen in the Jinxiuchuan Basin

2017 ◽  
Vol 08 (2) ◽  
pp. 105-115
Author(s):  
Tong Wang ◽  
◽  
Zhenghe Xu ◽  
Shengdong Zhang ◽  
Lizhi Zhang ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Hydrologic Cycle
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