Time-lapse resistivity investigation of salinity changes at an ex-promontory land: a case study of Carey Island, Selangor, Malaysia
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. Re�lationship between earth resis...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Springer
2011
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| Online Access: | http://eprints.uthm.edu.my/7894/ http://eprints.uthm.edu.my/7894/1/J3626_e8c4bf18776656c105d24550c43af8b7.pdf |
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| author | Baharuddin, Mohamad Faizal Tajul Taib, Samsudin Hashim, Roslan Zainal Abidin, Mohd Hazreek Ishak, Mohd Fakhrurrazi |
| author_facet | Baharuddin, Mohamad Faizal Tajul Taib, Samsudin Hashim, Roslan Zainal Abidin, Mohd Hazreek Ishak, Mohd Fakhrurrazi |
| author_sort | Baharuddin, Mohamad Faizal Tajul |
| building | UTHM Institutional Repository |
| collection | Online Access |
| description | 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. Re�lationship between earth resistivity and total
dissolved solids (TDS) was derived, and with re�sistivity images, used to identify water types: fresh
(ρe > 6.5 � m), brackish (3 � m < ρe < 6.5 � m),
or saline (ρe < 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 ground�water 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. |
| first_indexed | 2025-11-15T20:22:59Z |
| format | Article |
| id | uthm-7894 |
| institution | Universiti Tun Hussein Onn Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T20:22:59Z |
| publishDate | 2011 |
| publisher | Springer |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | uthm-78942022-10-17T06:21:55Z http://eprints.uthm.edu.my/7894/ Time-lapse resistivity investigation of salinity changes at an ex-promontory land: a case study of Carey Island, Selangor, Malaysia Baharuddin, Mohamad Faizal Tajul Taib, Samsudin Hashim, Roslan Zainal Abidin, Mohd Hazreek Ishak, Mohd Fakhrurrazi T Technology (General) 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. Re�lationship between earth resistivity and total dissolved solids (TDS) was derived, and with re�sistivity images, used to identify water types: fresh (ρe > 6.5 � m), brackish (3 � m < ρe < 6.5 � m), or saline (ρe < 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 ground�water 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. Springer 2011 Article PeerReviewed text en http://eprints.uthm.edu.my/7894/1/J3626_e8c4bf18776656c105d24550c43af8b7.pdf Baharuddin, Mohamad Faizal Tajul and Taib, Samsudin and Hashim, Roslan and Zainal Abidin, Mohd Hazreek and Ishak, Mohd Fakhrurrazi (2011) Time-lapse resistivity investigation of salinity changes at an ex-promontory land: a case study of Carey Island, Selangor, Malaysia. Environ Monit Assess. pp. 345-369. https://doi.org/ 10.1007/s10661-010-1792-x |
| spellingShingle | T Technology (General) Baharuddin, Mohamad Faizal Tajul Taib, Samsudin Hashim, Roslan Zainal Abidin, Mohd Hazreek Ishak, Mohd Fakhrurrazi Time-lapse resistivity investigation of salinity changes at an ex-promontory land: a case study of Carey Island, Selangor, Malaysia |
| title | Time-lapse resistivity investigation of salinity changes
at an ex-promontory land: a case study of Carey
Island, Selangor, Malaysia |
| title_full | Time-lapse resistivity investigation of salinity changes
at an ex-promontory land: a case study of Carey
Island, Selangor, Malaysia |
| title_fullStr | Time-lapse resistivity investigation of salinity changes
at an ex-promontory land: a case study of Carey
Island, Selangor, Malaysia |
| title_full_unstemmed | Time-lapse resistivity investigation of salinity changes
at an ex-promontory land: a case study of Carey
Island, Selangor, Malaysia |
| title_short | Time-lapse resistivity investigation of salinity changes
at an ex-promontory land: a case study of Carey
Island, Selangor, Malaysia |
| title_sort | time-lapse resistivity investigation of salinity changes
at an ex-promontory land: a case study of carey
island, selangor, malaysia |
| topic | T Technology (General) |
| url | http://eprints.uthm.edu.my/7894/ http://eprints.uthm.edu.my/7894/ http://eprints.uthm.edu.my/7894/1/J3626_e8c4bf18776656c105d24550c43af8b7.pdf |