Salinity mapping of coastal groundwater aquifers using hydrogeochemical and geophysical methods: a case study from north Kelantan, Malaysia

Samsudin, Abdul Rahim; Haryono, Andreas; Hamzah, Umar; Rafek, Abdul Ghani

doi:10.1007/s00254-007-1124-9

Cited by 72 publications

(34 citation statements)

References 5 publications

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“…Table 1 lists results, which show sodium (Na) and chloride (Cl) exceeding 70% of measured TDS. Dominant contents of sodium and chloride show seawater intrusion to be the source of salinity (Samsudin et al 2008;Pujari and Soni 2008). Seawater intrusion was thus confirmed as causing the site's salinity.…”

Section: Hydro-geochemical Parametersmentioning

confidence: 84%

Time-lapse resistivity investigation of salinity changes at an ex-promontory land: a case study of Carey Island, Selangor, Malaysia

Baharuddin

Taib

Hashim

et al. 2010

Environ Monit Assess

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Time-lapse resistivity measurements and groundwater geochemistry were used to study salinity effect on groundwater aquifer at the ex-promontory-land of Carey Island in Malaysia. Resistivity was measured by ABEM Terrameter SAS4000 and ES10-64 electrode selector. Relationship between earth resistivity and total dissolved solids (TDS) was derived, and with resistivity images, used to identify water types: fresh (ρ e > 6.5 m), brackish (3 m < ρ e < 6.5 m), or saline (ρ e < 3 m). Long-term monitoring of the studied area's groundwater quality via measurements of its time-lapse resistivity showed salinity changes in the island's groundwater aquifers not conforming to seawater-freshwater hydraulic gradient. In some aquifers far from the coast, saline water was dominant, while in some others, freshwater 30 m thick showed groundwater potential. Land transformation is believed to have changed the island's hydrogeology, which receives saltwater pressure all the time, limiting freshwater recharge to the groundwater system. The time-lapse resistivity measurements showed active salinity changes at resistivity-image bottom moving up the image for two seasons' (wet and dry) conditions. The salinity changes are believed to have been caused by incremental tide passing through highly porous material in the active-salinity-change area. The study's results were used to plan a strategy for sustainable groundwater exploration of the island.

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Section: Hydro-geochemical Parametersmentioning

confidence: 84%

Time-lapse resistivity investigation of salinity changes at an ex-promontory land: a case study of Carey Island, Selangor, Malaysia

Baharuddin

Taib

Hashim

et al. 2010

Environ Monit Assess

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“…The main river, Sungai Kelantan runs through most of the main cities of Kuala Krai, Tanah Merah, Pasir Mas and the capital Kota Bharu, where the catchment area spanned about 12000 km 2 (Ahmad et al 2009). Approximately, 400 km 2 of an alluvial delta and coastal plain stretching o the coast of Kelantan facing the south China Sea (Samsudin et al 2007). Sungai Kelantan receives rainfall from 0 and up to 17.5 cm in dry and wet months, due to the variation of the local monsoon climate and produces total average run off approximately 500 m 3 /s (Ahmad et al 2009).…”

Section: Methodsmentioning

confidence: 99%

Grain Size Analysis of Surface Fluvial Sediments in Rivers in Kelantan, Malaysia

Mohtar¹,

Bassa

Porhemmat

2017

JSM

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“…The basis of geophysics is the study of earth using a quantitative physical scence approach. In Malaysia, most ongoing geophysical methods are effectively used for field exploration purposes relating to the engineering, environmental and archeological studies such as subsurface profile mapping in order to locate bedrock [2], boulder and cavity [3], groundwater resources [4] - [7] and contamination [8], [9], leachate migration [10], mining [11] and archeology [12]. Geophysical techniques are an indirect or surface method which consists of seismic, geoelectrical and induced polarization, ground penetrating radar, gravity, magnet and electromagnetic.…”

Section: Introductionmentioning

confidence: 99%

Soil Moisture Content and Density Prediction Using Laboratory Resistivity Experiment

Abidin¹,

Saad²,

Ahmad³

et al. 2013

IJET

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Abstract-Natural soils are an intimate mixture of solid, liquid and gas phases. This study establishes a correlation for moisture content and density of a soil with its electrical resistivity. In the past, most of the conventional geotechnical site investigation required bulky and heavy equipment to determine the geotechnical parameters necessary for design and construction purposes. Consequentially, time and cost of the project is increased especially when dealing with some difficult site such as on mountainous terrain. This study is based on laboratory soil box resistivity meter observations made on soils mixed with additions of consistent increments of 1-5 % of water to 1500 gram of remolded soils in loose condition. At least 24 repetitive resistivity test observations were made and the moisture content and soil density was determined concurrently for each of the tests. The observations showed that the electrical resistivity variation decreased in a curvilinear manner with increasing percentage of moisture content. A regression equation and coefficient of determination, R2 for moisture content against soil electrical resistivity value was established by moisture content, w = 152.87ρ-0.312 (ρ = soil electrical resistivity) and R2 = 0.7718 respectively. While a regression equation and R2 value for bulk density versus soil electrical resistivity value was observed to be ρbulk = -0.107 ln (ρ) + 1.7249 and 0.7016 respectively. Hence, a viable method is demonstrated where the electrical resistivity value was applicable and has a great potential for geotechnical data prediction of parameters such as moisture content and soil density.Index Terms-Correlation, moisture content, soil electrical resistivity and soil density.

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Salinity mapping of coastal groundwater aquifers using hydrogeochemical and geophysical methods: a case study from north Kelantan, Malaysia

Cited by 72 publications

References 5 publications

Time-lapse resistivity investigation of salinity changes at an ex-promontory land: a case study of Carey Island, Selangor, Malaysia

Time-lapse resistivity investigation of salinity changes at an ex-promontory land: a case study of Carey Island, Selangor, Malaysia

Grain Size Analysis of Surface Fluvial Sediments in Rivers in Kelantan, Malaysia

Soil Moisture Content and Density Prediction Using Laboratory Resistivity Experiment

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