scholarly journals Hydrogeology and simulation of groundwater flow and land-surface subsidence in the northern part of the Gulf Coast aquifer system, Texas, 1891-2009

2012 ◽  
Author(s):  
Mark C. Kasmarek
Keyword(s):  
Groundwater Flow ◽  
Land Surface ◽  
Gulf Coast ◽  
Surface Subsidence ◽  
Aquifer System ◽  
Gulf Coast Aquifer

Arsenic enrichment in unconfined sections of the southern Gulf Coast aquifer system, Texas

2011 ◽  
Vol 26 (4) ◽  
pp. 421-431 ◽  
Author(s):  
J.B. Gates ◽  
J.P. Nicot ◽  
B.R. Scanlon ◽  
R.C. Reedy
Keyword(s):  
Gulf Coast ◽  
Aquifer System ◽  
Gulf Coast Aquifer

scholarly journals Understanding the dynamic behaviour for the Madrid aquifer (Spain): insights from the integration of A-DInSAR and 3-D groundwater flow and geomechanical models

2020 ◽  
Vol 382 ◽  
pp. 409-414 ◽  
Author(s):  
Roberta Bonì ◽  
Claudia Meisina ◽  
Pietro Teatini ◽  
Francesco Zucca ◽  
Claudia Zoccarato ◽  
...  
Keyword(s):  
Groundwater Flow ◽  
Land Surface ◽  
Dynamic Behaviour ◽  
Time Lag ◽  
Integrated Approach ◽  
Groundwater Withdrawal ◽  
System Response ◽  
Interferometric Synthetic Aperture Radar ◽  
Geomechanical Model ◽  
Aquifer System

Abstract. Advanced Differential Interferometric Synthetic Aperture Radar (A-DInSAR) techniques and 3-D groundwater flow and geomechanical models are integrated to improve our knowledge about the Tertiary detritic aquifer of Madrid (TDAM). In particular, the attention is focused on the Manzanares-Jarama well field, located to the northwest of Madrid, which experienced five cycles of extensive groundwater withdrawal followed by natural recovery, to cope with the droughts occurred in summer 1995, 1999, 2002, 2006, and 2009. Piezometric records and A-DInSAR data acquired by ERS-1/2 and ENVISAT satellites during the periods 1992–2000 and 2002–2010, respectively, have been used to calibrate the groundwater flow and the geomechanical models. A time-lag of about one month between the hydraulic head changes and the displacements of the land surface has been detected by a joint wavelet analysis of A-DInSAR and piezometer head time series. Overall, the results show the effectiveness of the proposed integrated approach composed of A-DInSAR and 3-D geomechanical model to characterize the aquifer-system response during and after the groundwater withdrawal.

scholarly journals Groundwater quality of the Gulf Coast aquifer system, Houston, Texas, 2010

Data Series ◽  
10.3133/ds598 ◽  
2011 ◽  
pp. i-64
Author(s):  
Jeannette H. Oden ◽  
Dexter W. Brown ◽  
Timothy D. Oden
Keyword(s):  
Groundwater Quality ◽  
Gulf Coast ◽  
Aquifer System ◽  
Gulf Coast Aquifer

GRACE-derived seasonal variations, a key to understanding aquifer sources, recharge and groundwater flow patterns

2020 ◽  
Author(s):  
karem Abdelmohsen ◽  
Mohamed Sultan ◽  
Himanshu Save
Keyword(s):  
Groundwater Flow ◽  
Seasonal Variations ◽  
Spherical Harmonic ◽  
Land Surface ◽  
Land Surface Model ◽  
Buffer Zone ◽  
Forward Modeling ◽  
Surface Model ◽  
Aquifer System ◽  
Lake Nasser

<p>The Nubian Sandstone Aquifer System (NSAS) in northeast Africa is formed of three subbasins, the Dakhla, Kufra, and the Northern Sudan Platform subbasins. The Dakhla subbasin (DSB) receives negligible precipitation (<10 mm/yr), yet displays significant seasonal variations in GRACETWS (average: 50 mm/yr, up to 77 mm/yr) across the entire subbasin. The origin of these variations could be related to one or more of the following factors: (1) leakage out from Lake Nasser, (2) leakage in from surroundings (Kufra basin [west NSAS], Northern Sudan Platform [south NSAS], Mediterranean sea [north NSAS], and Red Sea [east NSAS], and (3) recharge and rapid groundwater flow from Lake Nasser and the northern Sudan Platform. Three approaches were used to investigate the contribution of leakage (factors 1 and 2) to the observed GRACETWS signal over the DSB subbasin: (1) forward modeling (in spherical harmonic domain) of the maximum variations in Lake Nasser levels was applied to test whether the observed seasonal variation in GRACETWS across the DSB can be accounted for by leakage from Lake Nasser alone; (2) estimate (in spherical harmonic domain) the leakage in signal using the simulated TWS from the widely applied Land Surface Model (LSM), GLDAS (Global Land Data Simulation System); and (3) apply iterative forward modeling (iterations: n=30) to reconstruct the true mass variations of GRACETWS over the DSB. Findings suggest: (1) the leakage in signal over the DSB cannot account for the observed seasonal GRACETWS patterns and neither can the leakage out from Lake Nasser; (2) the leakage out signal is centered over Lake Nasser and extends to its immediate surroundings with a maximum radius of 250 km (upper boundary of leakage error); (3) the iterative modeling indicates that the maximum leakage within the 250 km buffer zone around the lake amounted to 22.6 % of the observed GRACETWS signal; (4) minimal leakage (up to 10 mm) from northerly precipitation is observed along the northern sections (~200 km deep) of the NSAS and negligible (< 4 mm) leakage is detected over the remaining sections of the DSB; and (5) the observed seasonal variations in GRACETWS over the DSB is related to an increase in groundwater storage related to seasonal recharge from Lake Nasser and rapid groundwater flow along a network of faults, fractures, and karst topography across the entire DSB.</p>

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