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Recharge and aquifer response: Manukan islands aquifer, Sabah, Malaysia

Manukan Island is a small island located in North-West of Sabah, Malaysia was used as a case study area for numerical modeling of an aquifer response to recharge and pumping rates. The results in this study present the variations of recharge into the aquifer under the prediction simulations. The rec...

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Main Authors: Praveena, Sarva Mangala, Abdullah, Mohd Harun, Aris, Ahmad Zaharin, Bidin, Kawi
Format: Article
Language:English
English
Published: Thai Society of Higher Eduction Institutes on Environment 2010
Online Access:http://psasir.upm.edu.my/id/eprint/16445/1/Recharge%20and%20aquifer%20response.pdf
http://psasir.upm.edu.my/id/eprint/16445/
http://www.tshe.org/ea/abstracts/2010_3-1_11.html
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spelling my.upm.eprints.164452015-10-29T01:58:14Z http://psasir.upm.edu.my/id/eprint/16445/ Recharge and aquifer response: Manukan islands aquifer, Sabah, Malaysia Praveena, Sarva Mangala Abdullah, Mohd Harun Aris, Ahmad Zaharin Bidin, Kawi Manukan Island is a small island located in North-West of Sabah, Malaysia was used as a case study area for numerical modeling of an aquifer response to recharge and pumping rates. The results in this study present the variations of recharge into the aquifer under the prediction simulations. The recharge rate increases the water level as indicated by hydraulic heads. This shows that it can alter groundwater of Manukan Island which has been suffering from an overexploration in its unconfined the aquifer. The increase in recharge rate (from 600 mm/year to 750 mm/year) increases the water level indicated by hydraulic heads. A reduction in pumping rate (from 0.072 m3/day to 0.058 m3/day) not only increases the amount of water levels in aquifer but also reduces the supply hence a deficit in supply. The increase in hydraulic heads depends on the percentage reduction of pumping and recharges rates. The well water has 1978.3 mg/L chloride with current pumping (0.072 m3/day) and recharge rates (600 mm/year). However, with an increased of recharge rate and current pumping rate it has decreased about 1.13%. In addition, reduction in pumping rate made the chloride concentration decreased about 2.8%. In general, a reduction in pumping with an increase in recharge rate leads to a decreased in chloride concentrations within the vicinity of cone of depression. Next, to further develop the numerical model, the model should focus on climate change variables such as consequences of climate change are increase in air temperature, increase in sea surface temperature, and more extreme weather conditions. These parameters are considered critical parameters for climate change impact modeling in aquifers. The behavior of the aquifer and its sustainable pumping rate can be done by applying a computer modeling component. Thai Society of Higher Eduction Institutes on Environment 2010 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/16445/1/Recharge%20and%20aquifer%20response.pdf Praveena, Sarva Mangala and Abdullah, Mohd Harun and Aris, Ahmad Zaharin and Bidin, Kawi (2010) Recharge and aquifer response: Manukan islands aquifer, Sabah, Malaysia. Environment Asia, 3 (1). pp. 72-81. ISSN 1906-1714 http://www.tshe.org/ea/abstracts/2010_3-1_11.html English
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
description Manukan Island is a small island located in North-West of Sabah, Malaysia was used as a case study area for numerical modeling of an aquifer response to recharge and pumping rates. The results in this study present the variations of recharge into the aquifer under the prediction simulations. The recharge rate increases the water level as indicated by hydraulic heads. This shows that it can alter groundwater of Manukan Island which has been suffering from an overexploration in its unconfined the aquifer. The increase in recharge rate (from 600 mm/year to 750 mm/year) increases the water level indicated by hydraulic heads. A reduction in pumping rate (from 0.072 m3/day to 0.058 m3/day) not only increases the amount of water levels in aquifer but also reduces the supply hence a deficit in supply. The increase in hydraulic heads depends on the percentage reduction of pumping and recharges rates. The well water has 1978.3 mg/L chloride with current pumping (0.072 m3/day) and recharge rates (600 mm/year). However, with an increased of recharge rate and current pumping rate it has decreased about 1.13%. In addition, reduction in pumping rate made the chloride concentration decreased about 2.8%. In general, a reduction in pumping with an increase in recharge rate leads to a decreased in chloride concentrations within the vicinity of cone of depression. Next, to further develop the numerical model, the model should focus on climate change variables such as consequences of climate change are increase in air temperature, increase in sea surface temperature, and more extreme weather conditions. These parameters are considered critical parameters for climate change impact modeling in aquifers. The behavior of the aquifer and its sustainable pumping rate can be done by applying a computer modeling component.
format Article
author Praveena, Sarva Mangala
Abdullah, Mohd Harun
Aris, Ahmad Zaharin
Bidin, Kawi
spellingShingle Praveena, Sarva Mangala
Abdullah, Mohd Harun
Aris, Ahmad Zaharin
Bidin, Kawi
Recharge and aquifer response: Manukan islands aquifer, Sabah, Malaysia
author_facet Praveena, Sarva Mangala
Abdullah, Mohd Harun
Aris, Ahmad Zaharin
Bidin, Kawi
author_sort Praveena, Sarva Mangala
title Recharge and aquifer response: Manukan islands aquifer, Sabah, Malaysia
title_short Recharge and aquifer response: Manukan islands aquifer, Sabah, Malaysia
title_full Recharge and aquifer response: Manukan islands aquifer, Sabah, Malaysia
title_fullStr Recharge and aquifer response: Manukan islands aquifer, Sabah, Malaysia
title_full_unstemmed Recharge and aquifer response: Manukan islands aquifer, Sabah, Malaysia
title_sort recharge and aquifer response: manukan islands aquifer, sabah, malaysia
publisher Thai Society of Higher Eduction Institutes on Environment
publishDate 2010
url http://psasir.upm.edu.my/id/eprint/16445/1/Recharge%20and%20aquifer%20response.pdf
http://psasir.upm.edu.my/id/eprint/16445/
http://www.tshe.org/ea/abstracts/2010_3-1_11.html
_version_ 1643826216496529408
score 13.211869

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