Parametric Studies on Saltwater Intrusion into Coastal Aquifers for Anticipate Sea Level Rise

Priyanka, BN and Mahesha, A (2015) Parametric Studies on Saltwater Intrusion into Coastal Aquifers for Anticipate Sea Level Rise. In: INTERNATIONAL CONFERENCE ON WATER RESOURCES, COASTAL AND OCEAN ENGINEERING (ICWRCOE'15), MAR 11-14, 201, Natl Inst Technol Karnataka, Mangaluru, INDIA, pp. 103-108.

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Abstract

Saltwater intrusion into coastal aquifers is a global issue, exacerbated by increasing demands for freshwater in coastal regions. This study investigates into the parametric analysis on saltwater intrusion in a conceptual, coastal, unconfined aquifer considering wide range of freshwater draft and anticipated sea level rise. The saltwater intrusion under various circumstances is simulated through parametric studies using MODFLOW, MT3DMS and SEAWAT. The MODFLOW is used to simulate the groundwater flow system under changing hydro-dynamics in coastal aquifer. To simulate solute transport MT3DMS and SEAWAT is used. The saltwater intrusion process has direct bearing on hydraulic conductivity and inversely related to porosity. It may also be noted that increase in recharge rate considered in the study does not have much influence on saltwater intrusion. Effect of freshwater draft at locations beyond half of the width of the aquifer considered has marginal effect and hence can be considered as safe zone for freshwater withdrawals. Due to the climate change effect, the anticipated rise in sea level of 0.88 m over a century is considered in the investigation. This causes increase in salinity intrusion by about 25%. The combined effect of sea level rise and freshwater draft (C) 2015 The Authors. Published by Elsevier B.V.

Item Type:	Conference Proceedings
Series.:	Aquatic Procedia
Publisher:	ELSEVIER SCIENCE BV
Additional Information:	International Conference on Water Resources, Coastal and Ocean Engineering (ICWRCOE), Natl Inst Technol Karnataka, Mangaluru, INDIA, MAR 11-14, 2015
Keywords:	Coastal aquifer; MODFLOW; MT3DMS; Pumping; Saltwater intrusion; Sea level rise; SEAWAT
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	15 Jun 2015 07:35
Last Modified:	15 Jun 2015 07:35
URI:	http://eprints.iisc.ac.in/id/eprint/51662

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