Characterisation of sea-water intrusion in the Pioneer Valley, Australia using hydrochemistry and three-dimensional numerical modelling

Werner, Adrian D.; Gallagher, Marcus

doi:10.1007/s10040-006-0059-7

Cited by 113 publications

(56 citation statements)

References 34 publications

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“…These potentially induce groundwater contamination via a range of possible sources and mechanisms (Jones et al 1999;Werner and Gallagher 2006;Alberti et al 2006). Coastal aquifer management is commonly aimed at controlling seawater intrusion (i.e.…”

Section: Introductionmentioning

confidence: 99%

Current Practice and Future Challenges in Coastal Aquifer Management: Flux-Based and Trigger-Level Approaches with Application to an Australian Case Study

Werner

Alcoe

Ordens

et al. 2011

Water Resour Manage

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The control of groundwater abstraction from coastal aquifers is typically aimed at minimizing the risk of seawater intrusion, excessive storage depletion and adverse impacts on groundwater-dependent ecosystems. Published approaches to the operational management of groundwater abstraction from regulated coastal aquifers comprise elements of "trigger-level management" and "flux-based management". 1832 A.D. Werner et al.Trigger-level management relies on measured groundwater levels, groundwater salinities and/or ecosystem health indicators, which are compared to objective values (trigger levels), thereby invoking management responses (e.g. pumping cutbacks). Flux-based management apportions groundwater abstraction rates based on estimates of aquifer recharge and discharge (including environmental water requirements). This paper offers a critical evaluation of coastal aquifer management paradigms using published coastal aquifer case studies combined with a simple evaluation of the Uley South coastal aquifer, South Australia. There is evidence that trigger-level management offers advantages over flux-based approaches through the evaluation of real-time resource conditions and trends, allowing for management responses aimed at protecting against water quality deterioration and excessive storage depletion. However, flux-based approaches are critical for planning purposes, and are required to predict aquifer responses to climatic and pumping stresses. A simplified modelling analysis of the Uley South basin responses to different management strategies demonstrates the advantages of considering a hybrid management approach that includes both trigger-level and flux-based controls. It is recommended that where possible, trigger-level and flux-based approaches be adopted conjunctively to minimize the risk of coastal groundwater degradation and to underpin strategies for future aquifer management and well-field operation.

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Section: Introductionmentioning

confidence: 99%

Current Practice and Future Challenges in Coastal Aquifer Management: Flux-Based and Trigger-Level Approaches with Application to an Australian Case Study

Werner

Alcoe

Ordens

et al. 2011

Water Resour Manage

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“…For the simulation or prediction of saltwater intrusion into aquifers, physics-based numerical models have been developed and applied to various field sites; Gingerich and Voss [4] applied 3D-SUTRA model to a coastal aquifer in Hawaii for the simulation of the saltwater intrusion; Werner and Gallagher [5] characterized seawater intrusion in coastal aquifers of the Pioneer Valley, Australia using MODHMS model; Guo and Langevin [6] developed SEAWAT, a variable-density finite-difference groundwater flow mode and Rozell and Wong [7] applied it to Shelter Island, USA for assessing effects of climate change on the groundwater resources; Yechieli et al [8] examined the response of the Mediterranean and Dead Sea coastal aquifers using FEFLOW model. Physics-based numerical models are powerful tools for the simulation or prediction of temporal and spatial variation of FSL in a given domain.…”

Section: Introductionmentioning

confidence: 99%

Comparative Evaluation of ANN- and SVM-Time Series Models for Predicting Freshwater-Saltwater Interface Fluctuations

Yoon

Kim

et al. 2017

Water

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Time series models based on an artificial neural network (ANN) and support vector machine (SVM) were designed to predict the temporal variation of the upper and lower freshwater-saltwater interface level (FSL) at a groundwater observatory on Jeju Island, South Korea. Input variables included past measurement data of tide level (T), rainfall (R), groundwater level (G) and interface level (F). The T-R-G-F type ANN and SVM models were selected as the best performance model for the direct prediction of the upper and lower FSL, respectively. The recursive prediction ability of the T-R-G type SVM model was best for both upper and lower FSL. The average values of the performance criteria and the analysis of error ratio of recursive prediction to direct prediction (RP-DP ratio) show that the SVM-based time series model of the FSL prediction is more accurate and stable than the ANN at the study site.

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“…Simulation of groundwater modeling is an excellent tool to understand the behavior of an aquifer system subjected to natural and artificial stresses such as pumping (Rejani et al, 2008). Examples of SEAWAT-200 applications in groundwater flow and solute transport studies were presented in Rejani et al (2008) in Balasore, India, Werner and Gallagher (2006) in Pionner Valley, Australia as well as Don et al (2005) in Kyushu Island and Ariake Sea, Japan.…”

Section: Introductionmentioning

confidence: 99%

Groundwater resources assessment using numerical model: A case study in low-lying coastal area

Praveena

Aris

2009

Int. J. Environ. Sci. Technol.

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ABSTRACT:The impacts of climate change and human pressure in groundwater have been greatest threats facing small islands. This paper represents a case study of groundwater responses towards the climate change and human pressures in Manukan Island Malaysia. SEAWAT-2000 was used for the simulations of groundwater response in study area. Simulations of six scenarios representing climate change and human pressures showed changes in hydraulic heads and chloride concentrations. Reduction in pumping rate and an increase in recharge rate can alter the bad effects of overdrafts in Manukan Island. In general, reduction in pumping rate and an increase in recharge rate are capable to restore and protect the groundwater resources in Manukan Island. Thus, for groundwater management options in Manukan Island, scenario 2 is capable to lessen the seawater intrusion into the aquifer and sustain water resources on a long-term basis. The selection of scenario 6 is the preeminent option during wet season. The output of this study provides a foundation which can be used in other small islands of similar hydrogeological condition for the purpose of groundwater resources protection.

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Characterisation of sea-water intrusion in the Pioneer Valley, Australia using hydrochemistry and three-dimensional numerical modelling

Cited by 113 publications

References 34 publications

Current Practice and Future Challenges in Coastal Aquifer Management: Flux-Based and Trigger-Level Approaches with Application to an Australian Case Study

Current Practice and Future Challenges in Coastal Aquifer Management: Flux-Based and Trigger-Level Approaches with Application to an Australian Case Study

Comparative Evaluation of ANN- and SVM-Time Series Models for Predicting Freshwater-Saltwater Interface Fluctuations

Groundwater resources assessment using numerical model: A case study in low-lying coastal area

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