Seawater intrusion processes, investigation and management: Recent advances and future challenges

Werner, Adrian D.; Bakker, Mark; Post, Vincent; Vandenbohede, Alexander; Lu, Chunhui; Ataie-Ashtiani, Behzad; Simmons, Craig T.; Barry, David Andrew

doi:10.1016/j.advwatres.2012.03.004

Cited by 1,127 publications

(670 citation statements)

References 333 publications

(79 reference statements)

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“…by Bauer et al (2006). Werner et al (2013) focus on the interaction between groundwater and sea water. There is much focus on the interaction between groundwater and rivers and streams, while interaction with lakes and other non-flowing water bodies is underrepresented (see, e.g.…”

Section: Coverage Of Groundwater-surface Water Interaction At the Regmentioning

confidence: 99%

Groundwater and Surface Water Interaction at the Regional-scale – A Review with Focus on Regional Integrated Models

Barthel

Banzhaf

2015

Water Resour Manage

185

119

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Scientists and practitioners agree that integrated water resource management is necessary, with an increasing need for research at the regional scale (10 3 to 10 5 km 2 ). At this scale interactions between environmental and human systems are fully developed and global change is linked to local actions. The groundwater-surface water interaction (GW-SW) is of particular interest. Herein we review the scientific journal literature and examine GW-SW at the regional scale. We briefly review all existing literature on GW-SW, then summarise its characteristics at different scales and identify specific challenges of the regional scale. We explore whether GW-SW should be treated differently at regional and local scales. Regional GW-SW is rarely examined in experimental field studies, which almost exclusively cover small areas. However, GW-SW is often integral to large scale coupled models. Thus, we collate information about existing models and their regional applications. Fully coupled, physics-based models have great potential to meet the technical challenges. However, limited data availability hampers the application of complex models at the regional scale and loosely coupled schemes are more widely applied. Many integrated modelling concepts have been published, but none have been applied in a wide range of settings. Thus, it is impossible to compare the performance of different approaches. Comparative analyses of existing regional scale integrated models in the context of different data availability and geographic conditions are needed. Unfortunately, peer-reviewed journal literature no longer provides a representative picture of the subject as models are becoming Btoo big to be published^or too pragmatic.

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Section: Coverage Of Groundwater-surface Water Interaction At the Regmentioning

confidence: 99%

Groundwater and Surface Water Interaction at the Regional-scale – A Review with Focus on Regional Integrated Models

Barthel

Banzhaf

2015

Water Resour Manage

185

119

View full text Add to dashboard Cite

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“…Freshwater stored in coastal aquifers is particularly susceptible to degradation due to its proximity to salty seawater, as well as higher population densities of coastal zones that lead to intensive water demand [20]. Climate variations (that cause fluctuations in sea level) and groundwater pumping also impose dynamic hydrologic conditions, which are inter-related with the distribution of dissolved salts through water density-salinity relationships [21].…”

Section: Introductionmentioning

confidence: 99%

Impact of Population Growth and Climate Change on the Freshwater Resources of Lamu Island, Kenya

Okello

Tomasello

Greggio

et al. 2015

Water

121

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Demand for freshwater is rising with factors, such as population growth, land use change and climate variations, rendering water availability in the future uncertain. Groundwater resources are being increasingly exploited to meet this growing demand. The aim of this study is to identify the influence of population growth induced by land use change and climate change on the future state of freshwater resources of Lamu Island in Kenya where a major port facility is under construction. The results of this study show that the "no industrial development" population scenario (assuming the port was not constructed) would be expected to reach ~50,000 people by 2050, while the projected population upon completion is expected to reach 1.25 million in the same year when the Lamu Port-South Sudan-Ethiopia Transport Corridor Program (LAPSSET) port reaches its full cargo-handling capacity. The groundwater abstraction in 2009 was 0.06 m 3 daily per capita, while the demand is expected to raise to 0.1 m 3 by 2050 according to the "LAPSSET development" projection. The modelling results show that the Shela aquifer in Lamu, which is the main source of water on the island, will not experience stress by 2065 for the "no industrial development" OPEN ACCESSWater 2015, 7 1265 population scenario, whereas for the "LAPSSET development projection" population scenario, it will occur sooner (between 2020 and 2028). The modelling results show that the Representative Concentration Pathways (RCP) climate change scenarios will have a smaller impact on the effective water volume reserves than Special Report on Emissions Scenarios (SRES) for the "no industrial development", while the impact is expected to be similar for the "LAPSSET development", suggesting that population growth exacerbated by land use change will be a more significant driving force than climate change in affecting freshwater availability.

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“…Zhang et al, 2002;Goswami and Clement, 2007;Werner et al, 2013;Clement, 2012, 2013). Goswami and Clement (2007) presented laboratory scale results from sandbox experiments with the goal of providing new benchmark data sets for validating numerical SWI codes.…”

Section: Introductionmentioning

confidence: 99%

Experimental saltwater intrusion in coastal aquifers using automated image analysis: Applications to homogeneous aquifers

Robinson

Ahmed

Hamill

2016

Journal of Hydrology

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This paper presents the applications of a novel methodology to quantify saltwater intrusion parameters in laboratory-scale experiments. The methodology uses an automated image analysis procedure, minimizing manual inputs and the subsequent systematic errors that can be introduced. This allowed the quantification of the width of the mixing zone which is difficult to measure in experimental methods that are based on visual observations. Glass beads of different grain sizes were tested for both steady-state and transient conditions. The transient results showed good correlation between experimental and numerical intrusion rates. The experimental intrusion rates revealed that the saltwater wedge reached a steady state condition sooner while receding than advancing. The hydrodynamics of the experimental mixing zone exhibited similar traits; a greater increase in the width of the mixing zone was observed in the receding saltwater wedge, which indicates faster fluid velocities and higher dispersion. The angle of intrusion analysis revealed the formation of a volume of diluted saltwater at the toe position when the saltwater wedge is prompted to recede. In addition, results of different physical repeats of the experiment produced an average coefficient of variation less than 0.18 of the measured toe length and width of the mixing zone. KeywordsSaline water intrusion; Intrusion angle; Width of the mixing zone; Light to concentration conversion.

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Seawater intrusion processes, investigation and management: Recent advances and future challenges

Cited by 1,127 publications

References 333 publications

Groundwater and Surface Water Interaction at the Regional-scale – A Review with Focus on Regional Integrated Models

Groundwater and Surface Water Interaction at the Regional-scale – A Review with Focus on Regional Integrated Models

Impact of Population Growth and Climate Change on the Freshwater Resources of Lamu Island, Kenya

Experimental saltwater intrusion in coastal aquifers using automated image analysis: Applications to homogeneous aquifers

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