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Geological and Hydrogeological Characterizations Matter for Submarine Groundwater Discharge (SGD) Estimations
  • Haile Arefayne Shishaye
Haile Arefayne Shishaye
Southern Cross University

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The importance of geologic and hydrogeologic characterizations of aquifer settings seems to be ignored in submarine groundwater discharge (SGD) estimations. Groundwater flow is highly controlled by the geologic and hydrogeologic settings of an aquifer. However, most of the submarine groundwater discharge estimation techniques, including the geophysical and geochemical tracers and water balance methods do not consider geologic heterogeneities, while aquifer geology and the associated hydraulic conductivity values vary in orders of magnitude, suggesting potential inaccuracy of the SGD estimates. This paper summarizes the importance of integrating geologic and hydrogeologic characterizations with any of the SGD estimation techniques to come up with effective decisions and conclusions in coastal aquifer management and monitoring plans.