Abstract

An assessment of sea intrusion into coastal aquifers as a consequence of local sea-level rise (LSLR) due to climate change was carried out at Murgia and Salento in southern Italy. The interpolation of sea-level measurements at three tide-gauge stations was performed during the period of 2000 to 2014. The best In of measurements shows an increasing rale of LSLR ranging from 4.4 mm/y to 8.8 mm/y, which will result in a maximum LSLR of approximately 2 m during the 22nd century. The local rale of sea-level rise matches recent. 21st and 22nd century projections of mean global sea-level rise determined by other researchers, which include increased melting rates of the Greenland and Antarctic ice sheets, the effect of ocean thermal expansion, the melting of glaciers and ice caps, and changes in the quantity of stored land water. Subsequently, Ghyben-Herzberg's equation for the freshwater; saltwater interface was rewritten in order to determine the decrease in groundwater discharge due to the maximum LSLR. Groundwater flow simulations and ArcGIS elaborations of digital elevation models of the coast provided input data for the Ghyben-Herzberg calculation under the assumption of head-controlled systems. The progression of seawater intrusion due to LSLR suggests an impressive depletion of available groundwater discharge during the 22nd century, perhaps as much as 16.1% of current groundwater pumping for potable water in Salento. (C) 2016 Elsevier B.V. All rights reserved.

Autore Pugliese

• Masciopinto Costantino

Tutti gli autori

• C. Masciopinto; I.S. Liso

Titolo volume/Rivista

Science of the total environment

Anno di pubblicazione

2016

ISSN

0048-9697

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

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Settori ERC

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