scholarly journals Simulated effects of sea-level rise on the shallow, fresh groundwater system of Assateague Island, Maryland and Virginia

2021 ◽  
Author(s):  
Brandon J. Fleming ◽  
Jeff P. Raffensperger ◽  
Phillip J. Goodling ◽  
John P. Masterson
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Fresh Groundwater ◽  
Groundwater System ◽  
Assateague Island

scholarly journals Impacts of Sea Level Rise and Groundwater Extraction Scenarios on Fresh Groundwater Resources in the Nile Delta Governorates, Egypt

Water ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1690 ◽  
Author(s):  
Marmar Mabrouk ◽  
Andreja Jonoski ◽  
Gualbert H. P. Oude Essink ◽  
Stefan Uhlenbrook
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Driving Forces ◽  
Nile Delta ◽  
Saline Water ◽  
Groundwater Resources ◽  
Salt Transport ◽  
Groundwater Extraction ◽  
Fresh Groundwater ◽  
The Impact

As Egypt’s population increases, the demand for fresh groundwater extraction will intensify. Consequently, the groundwater quality will deteriorate, including an increase in salinization. On the other hand, salinization caused by saltwater intrusion in the coastal Nile Delta Aquifer (NDA) is also threatening the groundwater resources. The aim of this article is to assess the situation in 2010 (since this is when most data is sufficiently available) regarding the available fresh groundwater resources and to evaluate future salinization in the NDA using a 3D variable-density groundwater flow model coupled with salt transport that was developed with SEAWAT. This is achieved by examining six future scenarios that combine two driving forces: increased extraction and sea level rise (SLR). Given the prognosis of the intergovernmental panel on climate change (IPCC), the scenarios are used to assess the impact of groundwater extraction versus SLR on the seawater intrusion in the Delta and evaluate their contributions to increased groundwater salinization. The results show that groundwater extraction has a greater impact on salinization of the NDA than SLR, while the two factors combined cause the largest reduction of available fresh groundwater resources. The significant findings of this research are the determination of the groundwater volumes of fresh water, brackish, light brackish and saline water in the NDA as a whole and in each governorate and the identification of the governorates that are most vulnerable to salinization. It is highly recommended that the results of this analysis are considered in future mitigation and/or adaptation plans.

scholarly journals Numerical Modeling of Saltwater Intrusion in the Rmel-Oulad Ogbane Coastal Aquifer (Larache, Morocco) in the Climate Change and Sea-Level Rise Context (2040)

Water ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2167
Author(s):  
Mohamed Jalal EL Hamidi ◽  
Abdelkader Larabi ◽  
Mohamed Faouzi
Keyword(s):  
Climate Change ◽  
Sea Level Rise ◽  
Sea Level ◽  
Coastal Aquifer ◽  
Fresh Groundwater ◽  
Sea Levels ◽  
Groundwater Levels ◽  
Rising Sea Levels ◽  
Management Approaches ◽  
And Sea Level

Many coastal aquifers have experienced seawater intrusion (SWI) into fresh groundwater aquifers. The principal causes of SWI include over-pumping and events such as climate change (CC) and rising sea levels. In northern Morocco, the Rmel-Oulad Ogbane coastal aquifer (ROOCA) supplies high-quality groundwater for drinking water and agriculture. This favorable situation has led to increased pumping, resulting in environmental challenges such as dropping water table and SWI. Furthermore, the climate has resulted in less recharge, with an estimated annual precipitation of 602 mm and an average temperature of 18.5 °C. The goal of this study is to determine how CC, over-pumping, and sea-level rise (SLR) affect SWI. Computational groundwater and solute transport models are used to simulate the spatial and temporal evolution of hydraulic heads and groundwater solute concentrations. The calibration is based on steady and transient groundwater levels from 1962 to 2040. SWI simulations show that the NW sector of the coastal area would be polluted, with the toe reaching 5.2 km inland with a significant salinity (15–25 g/L). To protect the fresh water in the reservoir from SWI, enhanced groundwater development and management approaches for this aquifer are required, such as artificial recharge from surface water.

scholarly journals Effects of sea-level rise on barrier island groundwater system dynamics - ecohydrological implications

Ecohydrology ◽  
2013 ◽  
Vol 7 (3) ◽  
pp. 1064-1071 ◽  
Author(s):  
John P. Masterson ◽  
Michael N. Fienen ◽  
E. Robert Thieler ◽  
Dean B. Gesch ◽  
Benjamin T. Gutierrez ◽  
...  
Keyword(s):  
System Dynamics ◽  
Sea Level Rise ◽  
Sea Level ◽  
Barrier Island ◽  
Groundwater System

Sea-level rise impact on fresh groundwater lenses in two-layer small islands

2013 ◽  
Vol 28 (24) ◽  
pp. 5938-5953 ◽  
Author(s):  
Hamed Ketabchi ◽  
Davood Mahmoodzadeh ◽  
Behzad Ataie-Ashtiani ◽  
Adrian D. Werner ◽  
Craig T. Simmons
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Small Islands ◽  
Fresh Groundwater

Groundwater salinisation in the Wadden Sea area of the Netherlands: quantifying the effects of climate change, sea-level rise and anthropogenic interferences

2012 ◽  
Vol 91 (3) ◽  
pp. 373-383 ◽  
Author(s):  
P. Pauw ◽  
P.G.B. de Louw ◽  
G.H.P. Oude Essink
Keyword(s):  
The Netherlands ◽  
Groundwater Flow ◽  
Sea Level Rise ◽  
Sea Level ◽  
Wadden Sea ◽  
Salt Water ◽  
Groundwater Resources ◽  
Water Levels ◽  
Fresh Groundwater ◽  
Sea Area

AbstractHydrogeological research in coastal areas has gained considerable attention over the last decades due to increasing stresses on fresh groundwater resources. Fundamental groundwater flow and solute transport analyses remain essential for a concise understanding of the governing processes that lead to salinisation of fresh groundwater resources. However, the challenge of modern research is the application and quantification of these processes in real world cases. In this context, deltaic areas are amongst the most difficult study areas as they often have a complex groundwater salinity distribution. The Wadden Sea area in the northern part of the Netherlands is an example of such an area.We quantified salt water intrusion and salinisation of groundwater flow systems in two representative case studies in the Wadden Sea area, using the density dependent groundwater flow and transport code M0CDENS3D. The results indicate that sea-level rise and autonomous processes will cause severe salinisation in the future, especially in the low polder areas close to the sea. In addition, we show that enhanced land subsidence due to salt exploitation accelerates this process. Salinisation can be mitigated to some extent by raising surface water levels in polders and by creating saline groundwater collection areas that maintain a low controlled water level.

scholarly journals Reducing Uncertainty in 21st Century Sea-Level Predictions and Beyond

2021 ◽  
Vol 9 ◽  
Author(s):  
Martin Siegert ◽  
Pam Pearson
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Sea Water ◽  
Economic Cost ◽  
Storm Surges ◽  
Early Warning Systems ◽  
Water Infiltration ◽  
Mitigation Measures ◽  
Fresh Groundwater ◽  
Groundwater Reserves

Sea-level rise is one of the most critical issues the world faces under global warming. Around 680 million people (10% of the world’s population) live in low-lying coastal regions that are susceptible to flooding through storm surges and from sea-water infiltration of fresh groundwater reserves, degradation of farmland and accelerated coastal erosion, among other impacts. Rising sea level will exacerbate these problems and lead to societal impacts ranging from crop and water-supply failures to breakdowns of city infrastructures. In time, it is likely such changes will necessitate the migration of people with substantial economic cost and social upheaval. Here, we discuss the physical processes influencing 21st Century sea-level rise, the importance of not using 2100 alone as a benchmark, the changes that are already locked in, especially after 2100, and those that can be avoided. We also consider the need for both adaptation and mitigation measures and early warning systems in this challenging global problem. Finally, we discuss how the scientific prediction of sea level rise can improved through international coordination, cooperation and cost sharing.

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