Sains Malaysiana 40(11)(2011): 1223–1229

Survei Keberintangan Geoelektrik untuk Mengesan Terowong

di Bukit Tenggek, Setiu, Terengganu

(Geoelectrical Resistivity Survey for Ancient Tunnel Detection at Bukit Tenggek, Setiu, Terengganu)

Siti Nazira Masrom*, Mohd. Hariri Arifin, Abd. Rahim Harun & Abdul Rahim Samsudin

Program Geologi, Pusat Pengajian Sains Sekitaran dan Sumber Alam

Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia

43600, Bangi, Selangor D.E.Malaysia

Received: 4 October 2010 / Accepted: 10 February 2011

ABSTRACT

Geoelectrical resistivity survey was conducted in the Bukit Tenggek, Setiu, Terengganu to detect the possible existence of an ancient tunnel which is believed to be in the area. Geoelectrical resistivity method was found very effective in searching for archaeological exploration and underground structures (tunnels and artifacts). Geoelectrical resistivity survey was carried out using Terrameter ABEM SAS1000 and Wenner array electrode configuration. The survey area is located in a damp valley with a stream across the region. 2-D resistivity image showed the existence of anomalies in several areas that can be associated with the structure. Low resistivity value represents the estimated existence of the old tunnel, while isolated rounded anomalies are believed to be associated with barrels/artifacts. 3-D resistivity profiles, shows anomalies that may be caused by the existence of a horizontal and two vertical tunnels (shaft). However, the drillings work need to be done to figure out the exact cause of these anomalies.

Keywords: Ancient tunnel; artifacts; geoelectrical resistivity

ABSTRAK

Survei keberintangan geoelektrik ini telah dijalankan di kawasan Bukit Tenggek, Setiu, Terengganu untuk mengesan kemungkinan wujudnya terowong lama yang dipercayai berada di kawasan berkenaan. Kaedah keberintangan geoelektrik ini bukanlah asing dan didapati amat berkesan di dalam eksplorasi mencari bahan arkeologi dan struktur terkambus di bawah tanah (terowong dan bahan artifak). Survei keberintangan geoelektrik ini dijalankan dengan menggunakan peralatan ABEM Terrameter SAS1000 dan susun atur elektrod jenis Wenner. Kawasan kajian terletak di kawasan lembah yang lembap dan terdapat anak sungai yang merentasi kawasan tersebut. Imej keberintangan 2-D menunjukkan wujudnya beberapa kawasan beranomali yang boleh dikaitkan dengan struktur yang dicari. Nilai keberintangan yang rendah mewakili kawasan yang dianggarkan wujudnya terowong lama. Manakala anomali yang menunjukkan bentuk gugusan dianggarkan berasosiasi dengan lokasi tong/bahan artifak. Profil keberintangan 3-D menunjukkan anomali yang mungkin disebabkan oleh wujudnya satu terowong mendatar dan dua terowong menegak. Namun, kerja galicari perlu dilakukan bagi menentukan punca sebenar anomali tersebut.

Kata kunci: Bahan artifak; keberintangan geoelektrik; terowong lama

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*Corresponding author; email: sitinaziramasrom@yahoo.com