Groundwater
Permanent URI for this collection
Browse
Browsing Groundwater by Author "Ahmad Zaharin Aris"
Now showing 1 - 9 of 9
Results Per Page
Sort Options
Item Open Access An overview of groundwater chemistry studies in Malaysia(Springer, 2015) Nura Umar Kura; Mohammad Firuz Ramli; Wan Nor Azmin Sulaiman; Shaharin Ibrahim; Ahmad Zaharin ArisIn this paper, numerous studies on groundwater in Malaysia were reviewed with the aim of evaluating past trends and the current status for discerning the sustainability of the water resources in the country.Item Restricted Detecting and predicting the impact of land use changes on groundwater quality, a case study in Northern Kelantan, Malaysia(Elsevier, 2017) Tahoora Sheikhy Narany; Ahmad Zaharin Aris; Anuar Sefie; Saskia KeesstraThe conversions of forests and grass land to urban and farmland has exerted significant changes on terrestrial ecosystems. However, quantifying how these changes can affect the quality of water resources is still a challenge for hydrologists. Nitrate concentrations can be applied as an indicator to trace the link between land use changes and groundwater quality due to their solubility and easy transport from their source to the groundwater. In this study, 25 year records (from 1989 to 2014) of nitrate concentrations are applied to show the impact of land use changes on the quality of groundwater in Northern Kelantan, Malaysia, where large scale deforestation in recent decades has occurred.Item Open Access Extent and severity of groundwater contamination based on hydrochemistry mechanism of sandy tropical coastal aquifer(Elsevier, 2012) Noorain Mohd Isa; Ahmad Zaharin Aris; Wan Nor Azmin Wan SulaimanSmall islands are susceptible to anthropogenic and natural activities, especially in respect of their freshwater supply. The freshwater supply in small islands may be threatened by the encroachment of seawater into freshwater aquifers, usually caused by over pumping. This study focused on the hydrochemistry of the Kapas Island aquifer, which controls the groundwater composition. Groundwater samples were taken from six constructed boreholes for the analysis and measurement of its in-situ and major ions.Item Restricted Extenuation of saline solutes in shallow aquifer of a small tropical island: A case study of Manukan Island, North Borneo(Thai Society of Higher Education Institutes on Environment, 2010) Ahmad Zaharin Aris; Mohd Harun Abdullah; Sarva Mangala Praveena; Mohd Kamil Yusoff; Hafizan JuahirIntensive exploitation of groundwater from Manukan Island, s aquifer has disturbed the natural equilibrium between fresh and saline water and has resulted in the increase of groundwater salinity and the hydrochemical complexities of freshwater-seawater contact. It was observed that the mixing between freshwater-seawater has created diversity in the geochemical processes of Manukan Island, s aquifer and altered the freshwater and seawater mixture away from the theoretical composition line.Item Restricted Modeling of water balance components in a small island via a numerical model application(Coastal Education & Research Foundation, Inc., 2012) Sarva Mangala Praveena; Mohd Harun Abdullah; Kawi Biding; Ahmad Zaharin ArisThe results of this study provide a management foundation for restoration of the groundwater resources of Manukan Island. The management foundation can also be used with other small islands that have similar hydrogeological conditions for the purpose of groundwater resource protection.Item Restricted Sustainable groundwater management on the small island of Manukan, Malaysia(Springer, 2012) Sarva Mangala Praveena; Mohd Harun Abdullah; Kawi Bidin; Ahmad Zaharin ArisNumerical models are capable of simulating various groundwater scenarios and relate it towards groundwater management. This paper focuses on numerical modeling and water balance approaches in the search for a sustainable management plan in Manukan Island. The impacts of pumping and recharge rates represented by groundwater scenarios were investigated by means of hydraulic heads, chloride concentrations and water balance components.Item Restricted The influence of seawater on the chemical composition of groundwater in a small island: The example of Manukan Island, East Malaysia(Coastal Education & Research Foundation, Inc., 2012) Ahmad Zaharin Aris; Sarva Mangala Praveena; Mohd Harun AbdullahManukan Island in Sabah, Malaysia, is characterized as a small, unique island where groundwater is a major source for domestic water and other water-related activities. Hydrochemical studies were carried out in the island with the objective of identifying the influence of seawater on the chemical composition of groundwater in Manukan Island via ionic ratios and saturation states.Item Restricted The long-term impacts of anthropogenic and natural processes on groundwater deterioration in a multilayered aquifer(Elsevier, 2018) Tahoora Sheikhy Narany; Anuar Sefie; Ahmad Zaharin ArisIn many regions around the world, there are issues associated with groundwater resources due to human and natural factors. However, the relation between these factors is difficult to determine due to the large number of parameters and complex processes required. In order to understand the relation between land use allocations, the intrinsic factors of the aquifer, climate change data and groundwater chemistry in the multilayered aquifer system in Malaysia's Northern Kelantan Basin, twenty-two years hydrogeochemical data set was used in this research. The groundwater salinisation in the intermediate aquifer, which mainly extends along the coastal line, was revealed through the hydrogeochemical investigation. Even so, there had been no significant trend detected on groundwater salinity from 1989 to 2011Item Restricted Understanding of groundwater salinity using statistical modeling in a small tropical island, East Malaysia(Springer, 2011) Sarva Mangala Praveena; Mohd Harun Abdullah; Kawi Bidin; Ahmad Zaharin ArisThis paper presents an understanding of groundwater salinity by identification of effective factors using chemometric methods (cluster analysis and multiple linear regressions) in Manukan Island, Sabah. Local groundwater and environmental properties were used to explore the effective factors of groundwater salinity.