Assessing spatio-temporal patterns of groundwater salinity in small coral islands in the Western Indian Ocean

Jean-Lambert Join, Olivier Banton, Jean-Christophe Comte, Julie Leze, Frederic Massin, Eric Nicolini

Research output: Contribution to journalArticle

4 Downloads (Pure)

Abstract

We investigated groundwater salinity as a key element in both the short and long-term evolution of the island of Grande Glorieuse. Firstly, we demonstrated that its evolution involved the integration of the whole range of variables forcing climate change. Piezometric surveys designed to sample the salinity of the subsoil waters of Grande Glorieuse could therefore provide an objective indicator of the environment’s evolution. Then, based on information from geoelectrical investigations, we proved that the spatial distribution of salinity is strongly dependent on the geological structure of the island. Structural heterogeneities can influence vulnerability of the island environment to salinization of the freshwater lens. Thus, characterization and monitoring of the freshwater lens will provide a reliable means of observing and managing anticipated climate changes on small islands.
Original languageEnglish
Article number1-12
Number of pages12
JournalWestern Indian Ocean Journal of Marine Science
Volume10
Issue number1
Publication statusPublished - 2011

Fingerprint

coral
salinity
groundwater
climate change
salinization
geological structure
subsoil
vulnerability
spatial distribution
Indian Ocean
monitoring
water

Keywords

  • electrical resistance tomography
  • climate change
  • small coral islands
  • Grande Glorieuse
  • hydrogeology
  • seawater intrusion
  • borehole monitoring

Cite this

Assessing spatio-temporal patterns of groundwater salinity in small coral islands in the Western Indian Ocean. / Join, Jean-Lambert; Banton, Olivier; Comte, Jean-Christophe; Leze, Julie; Massin, Frederic; Nicolini, Eric.

In: Western Indian Ocean Journal of Marine Science, Vol. 10, No. 1, 1-12, 2011.

Research output: Contribution to journalArticle

Join, Jean-Lambert ; Banton, Olivier ; Comte, Jean-Christophe ; Leze, Julie ; Massin, Frederic ; Nicolini, Eric. / Assessing spatio-temporal patterns of groundwater salinity in small coral islands in the Western Indian Ocean. In: Western Indian Ocean Journal of Marine Science. 2011 ; Vol. 10, No. 1.
@article{51fc85a9129c42d5b4f265c2fc61b345,
title = "Assessing spatio-temporal patterns of groundwater salinity in small coral islands in the Western Indian Ocean",
abstract = "We investigated groundwater salinity as a key element in both the short and long-term evolution of the island of Grande Glorieuse. Firstly, we demonstrated that its evolution involved the integration of the whole range of variables forcing climate change. Piezometric surveys designed to sample the salinity of the subsoil waters of Grande Glorieuse could therefore provide an objective indicator of the environment’s evolution. Then, based on information from geoelectrical investigations, we proved that the spatial distribution of salinity is strongly dependent on the geological structure of the island. Structural heterogeneities can influence vulnerability of the island environment to salinization of the freshwater lens. Thus, characterization and monitoring of the freshwater lens will provide a reliable means of observing and managing anticipated climate changes on small islands.",
keywords = "electrical resistance tomography, climate change, small coral islands, Grande Glorieuse, hydrogeology, seawater intrusion, borehole monitoring",
author = "Jean-Lambert Join and Olivier Banton and Jean-Christophe Comte and Julie Leze and Frederic Massin and Eric Nicolini",
year = "2011",
language = "English",
volume = "10",
journal = "Western Indian Ocean Journal of Marine Science",
issn = "0856-860X",
number = "1",

}

TY - JOUR

T1 - Assessing spatio-temporal patterns of groundwater salinity in small coral islands in the Western Indian Ocean

AU - Join, Jean-Lambert

AU - Banton, Olivier

AU - Comte, Jean-Christophe

AU - Leze, Julie

AU - Massin, Frederic

AU - Nicolini, Eric

PY - 2011

Y1 - 2011

N2 - We investigated groundwater salinity as a key element in both the short and long-term evolution of the island of Grande Glorieuse. Firstly, we demonstrated that its evolution involved the integration of the whole range of variables forcing climate change. Piezometric surveys designed to sample the salinity of the subsoil waters of Grande Glorieuse could therefore provide an objective indicator of the environment’s evolution. Then, based on information from geoelectrical investigations, we proved that the spatial distribution of salinity is strongly dependent on the geological structure of the island. Structural heterogeneities can influence vulnerability of the island environment to salinization of the freshwater lens. Thus, characterization and monitoring of the freshwater lens will provide a reliable means of observing and managing anticipated climate changes on small islands.

AB - We investigated groundwater salinity as a key element in both the short and long-term evolution of the island of Grande Glorieuse. Firstly, we demonstrated that its evolution involved the integration of the whole range of variables forcing climate change. Piezometric surveys designed to sample the salinity of the subsoil waters of Grande Glorieuse could therefore provide an objective indicator of the environment’s evolution. Then, based on information from geoelectrical investigations, we proved that the spatial distribution of salinity is strongly dependent on the geological structure of the island. Structural heterogeneities can influence vulnerability of the island environment to salinization of the freshwater lens. Thus, characterization and monitoring of the freshwater lens will provide a reliable means of observing and managing anticipated climate changes on small islands.

KW - electrical resistance tomography

KW - climate change

KW - small coral islands

KW - Grande Glorieuse

KW - hydrogeology

KW - seawater intrusion

KW - borehole monitoring

M3 - Article

VL - 10

JO - Western Indian Ocean Journal of Marine Science

JF - Western Indian Ocean Journal of Marine Science

SN - 0856-860X

IS - 1

M1 - 1-12

ER -