UPM Institutional Repository

Evolution of groundwater chemistry in the shallow aquifer of a small tropical island in Sabah, Malaysia


Citation

Aris, Ahmad Zaharin and Abdullah, Mohd Harun and Praveena, Sarva Mangala (2009) Evolution of groundwater chemistry in the shallow aquifer of a small tropical island in Sabah, Malaysia. Sains Malaysiana, 38 (6). pp. 805-812. ISSN 0026-6039

Abstract

Groundwater is the prime source of freshwater in most small islands. A detailed groundwater and seawater chemistry study was undertaken from March 2006 to January 2007 to examine the evolution of groundwater in the shallow aquifer of Manukan Island, Sabah, Malaysia. Coastal groundwater aquifers especially for small islands are often exposed to heavy pumping and consequently to risks of seawater intrusion. Major ion chemistry analysis showed that the groundwater quality of the island experienced changes attributed to seawater intrusion. The groundwater has undergone a compositional change from Ca-rich to Na-rich which can be explained mostly by simple mixing process and cation exchange process. From the PHREEQC simulation model, calcite, dolomite and aragonite solubility showed positive mean values (0.65; 1.11; 0.51, respectively) of the saturation indices (SI) indicating supersaturation which attributed from the simple mixing and eventually cation exchange process. This information is important in protecting and remediating the disturbed aquifer situation.


Download File

[img]
Preview
PDF (Abstract)
Evolution of groundwater chemistry in the shallow aquifer of a small tropical island in Sabah.pdf

Download (85kB) | Preview

Additional Metadata

Item Type: Article
Divisions: Faculty of Environmental Studies
Publisher: Penerbit Universiti Kebangsaan Malaysia
Keywords: Groundwater chemistry evolution; PHREEQC; Small island aquifer; Seawater intrusion
Depositing User: Khairil Ridzuan Khahirullah
Date Deposited: 06 Mar 2014 04:07
Last Modified: 16 Oct 2018 08:02
URI: http://psasir.upm.edu.my/id/eprint/14627
Statistic Details: View Download Statistic

Actions (login required)

View Item View Item