Groundwater mapping of urban and coastal areas in Brunei

• Autorzy: Abidin Hakimmi , Azffri Siti Lieyana , Nirus Emelia , Suhip Asri , Jaya Afiq Aiman , Gödeke Stefan Herwig

Identyfikatory

DOI

10.24425/jwld.2024.149130

• Języki publikacji: EN

Abstrakty

EN

Groundwater mapping plays an important role in effective water resource management, sustainable development, and environmental protection. In the tropical Brunei Darussalam (north Borneo Island), groundwater mapping is yet to be provided. The aim of the study is to provide groundwater mapping of Brunei, particularly for the urban and coastal areas of the Brunei-Muara capital district. The study uses a GIS interpolation technique to generate a groundwater contour map based on groundwater data from 572 sacrificial boreholes located in the study area. Remote sensing data and published maps from secondary sources were digitised in ArcGIS software to produce thematic layers for further hydrological evaluations. Results showed that groundwater levels in the study area are generally high and shallow, ranging from 0 to 18 m below ground level with a mean value of 2.9 m. According to the evaluation of geo-thematic layers and groundwater contours, groundwater flows towards the South China Sea in the coastal areas and towards the Brunei River further inland. Hydraulic gradients towards the South China Sea also vary between 0.004 and 0.08. Thus, assuming surface aquifer thickness in the weathered zone between 10 to 20 m, hydraulic conductivities ranges from 1∙10^-5 to 1∙10^-4 m∙s^-1, a submarine groundwater discharge (SGD) flux between 4.7∙10^-7 to 4.0∙10^-4 m³ ∙s^-1 per unit width can be estimated for the shallow aquifer. This study provides valuable insights into the groundwater system dynamics so important, which are critical for its future utilisation and protection, aiming to contribute to the national water security in Brunei Darussalam.

Słowa kluczowe

EN

Brunei; groundwater contour map; groundwater depth; groundwater flow path; submarine groundwater discharge; SGD

• Wydawca: Wydawnictwo ITP
• Czasopismo: Journal of Water and Land Development
• Rocznik: 2024
• Tom: no. 61
• Strony: 21--29
• Opis fizyczny: Bibliogr. 54 poz., mapy, rys., tab., wykr.

Twórcy

autor

Abidin Hakimmi

• Universiti Brunei Darussalam, Geoscience Programme, Faculty of Science, Jalan Tungku Link, Gadong, BE1410, Bandar Seri Begawan, Brunei Darussalam

• https://orcid.org/0009-0002-4657-3421

autor

Azffri Siti Lieyana

• Universiti Brunei Darussalam, Geoscience Programme, Faculty of Science, Jalan Tungku Link, Gadong, BE1410, Bandar Seri Begawan, Brunei Darussalam

• https://orcid.org/0009-0007-9506-5390

autor

Nirus Emelia

• Universiti Brunei Darussalam, Geoscience Programme, Faculty of Science, Jalan Tungku Link, Gadong, BE1410, Bandar Seri Begawan, Brunei Darussalam

• https://orcid.org/0009-0000-9947-9928

autor

Suhip Asri

• Ministry of Development, Public Works Department, Geological and Geotechnical Section, Jalan Lapangan Terbang Lama, Berakas, BB3510, Bandar Seri Begawan, Brunei Darussalam

• https://orcid.org/0009-0007-1221-4304

autor

Jaya Afiq Aiman

• Ministry of Development, Public Works Department, Geological and Geotechnical Section, Jalan Lapangan Terbang Lama, Berakas, BB3510, Bandar Seri Begawan, Brunei Darussalam

• https://orcid.org/0009-0009-0216-7764

autor

Gödeke Stefan Herwig

• Universiti Brunei Darussalam, Geoscience Programme, Faculty of Science, Jalan Tungku Link, Gadong, BE1410, Bandar Seri Begawan, Brunei Darussalam
• [e-mail]

• https://orcid.org/0000-0001-9678-6201

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