Sains Malaysiana 38(6)(2009): 827–833

GIS Based Assessment on Landslide Hazard Zonation: Case Study of Cameron Highlands – Gua Musang Road Kelantan, Malaysia

(Penilaian Pengezonan Bahaya Tanah Runtuh Berdasarkan Sistem Maklumat Geografi:

Kajian Kes Jalan Raya Cameron Highlands – Gua Musang, Kelantan, Malaysia)

Mohamed M. GahGah*

Natural Atomic Energy Commission (NATIC)

Sana’a, Yemen, P.O. BOX 47201, Yemen

Juhari Mat Akhir, Abdul Ghani M. Rafek, Ibrahim Abdullah

School of Environmental and Natural Resource Sciences

Faculty of Science and Technology, Universiti Kebangsaan Malaysia

43600 UKM Bangi, Selangor, Malaysia

Received: 11 July 2008 / Accepted: 14 April 2009

ABSTRACT

The aim of this study was to investigate the factors that cause landslides in the area along the new road between Cameron Highlands and Gua Musang. Landslide factors such as lineaments have been extracted from remote sensing data (LandsatTM image) using ERDAS software. A soil map has been produced using field work and laboratory analysis, and the lithology, roads, drainage pattern and rainfall have been digitized using ILWIS software together with the slope angle and elevation from the Digital Elevation Model (DEM). All these parameters, which are vital for landslide hazard assessment, have been integrated into the geographical information system (GIS) for further data processing. Weightage for these landslide relevant factors related to their influence in landslide occurrence using the heuristic method has been carried out. The results from this combination through a modified ‘index overlay with multi class maps’ model was used to produce a landslide hazard zonation map. Five classes of potential landslide hazard have been derived as the following: very low hazard zone 17.27%, low hazard zone 39.35%, medium hazard zone 25.1%, high hazard zone 15.35% and very high hazard zone 2.93%. The results from this work have been checked through the landslide inventory using available aerial photos interpretation and field work, and show that the slope and elevation have the most direct affect on landslide occurrence.

Keywords: Hazard; landslide; landslide factors; remote sensing

ABSTRAK

Kajian ini bertujuan untuk menyiasat faktor-faktor yang menyebabkan tanah runtuh di kawasan sepanjang jalan raya antara Cameron Highlands dan Gua Musang. Fakor yang mempengaruhi tanah runtuh seperti lineamen diperolehi daripada data penderiaan jauh (imej Landsat TM) dengan menggunakan perisionERDAS, peta jenis tanah dihasilkan melalui kerja lapangan dan analisis makmal, peta litologi, jalan raya, pola saliran dan data hujan didigitkan dengan menggunakan perisianILWIS model elevasi digit (DEM). Semua parameter ini yang penting untuk penilaian bencana tanah runtuh, telah diintegrasikan dalam sistem maklumat geografi(GIS). Penggunaan GIS membolehkan pengurusan dan persembahan data dilakukan secara lebih pantas. Pemberat untuk faktor-faktor yang mempengaruhi kejadian tanah runtuh telah dijalankan menggunakan kaedah heuristik. Hasil daripada gabungan ini melalui model tindanan peta indeks pelbagai kelas dijanakan untuk menghasilkan peta zon bencana tanah runtuh. Lima kelas potensi bencana tanah runtuh telah dihasilkan seperti berikuti: zon bencana sangat rendah 17.27%, zon bencana rendah 39.35%, zon bencana sederhana 25.1%, zon bencana tinggi 15.35% dan zon bencana sangat tinggi 2.93%. Hasil daripada kajian ini telah dipastikan melalui inventori tanah runtuh menggunakan penafsiran fotograf udara dan kerja lapangan, dan menunjukkan cerun dan elevasi mempunyai kesan secara langsung terhadap kejadian tanah runtuh.

Kata kunci: Bencana; faktor-faktor tanah runtuh; penilaian tanah runtah; tanah runtuh

REFERENCES

Abd. Ghani Rafek, Ibrahim Komoo & Tan T.H. 1989. Influence of geological factors on slope stability along the East-West Highway, Malaysia. Proc. Int. Conf. Engineering Geology in Tropical Terrain. Bangi: 79-93.

Bonham, G.F.C. 1994. Geographic Information Systems For Geoscicntists – Modeling with GIS. Pergamon/ Elsevier Science Inc.

Carrar, A. 1995. Geographic Information System in Assessment Naturals Hazards. The Netherlands: Academic Publications.

Cruden, D.M. 1991. A simple definition of a landslide. Bulletin of international Association of Engineering Geology 43: 27-29.

Cruden M. & Varnes D.J. 1996. Landslide types and processes. In: Landslides: Investigation and Mitigation, edited by Turner A.K. & Shuster R.L. Transp. Res. Board. Spec Rep. 247: 36-75.

Dai F.C., Lee C.F. & Ngai Y.Y. 2002. Landslide risk assessment and management: An overview. Engineering Geology  64(1): 65-87.

Gobbett, D.J. & Hutchinson, C.S. 1973. Geology of the Malay Paninsula. New York: John Wiley & Son Inc.

Hutchison, C.S. 1973. Volcanic Activity. In Geology of Malay Peninsula: West Malaysia and Singapore, edited by D.J Gobbett & Hutchison, C.S. Int. New York: John Wiley.

Jamaludin, S. & Hussein, A.N. 2006. Landslide hazard and risk assessment: The Malaysian experience. The Geological Society of London, IAEG Paper number 455.

Komoo, I., Jamaluddin, T.A., Othman, M.A. & Singh, M. 2004. Engineering geology of the Bukit Lanjan rock slope failure, Malaysia. Proceedings of the Malaysia-Japan Symposium on Geohazards and Geoenvironmental Engineering Recent Advances. Selangor, pp. 13-18.

Lachowski, H., Maus, P., Golden, M., Johnson, J., Landrum, V., Powell, J., Varver, V., Wirth, T., Gonzales, J. & Bain, S. 1996. Guidelines for the Use of Digital Imagery for Vegetation Mapping. pp. 125, Diane Pub. Co.

Murck, B.W., Skinner, B.J. & Porter, S.C. 1996. Environmental Geology, New York: John Wiley & Sons, p 476.

Singhroy, V. & Mattur, K. 2000. SAR Image Techniques for Mapping Areas of Landslide, International Archives of photogrammetry and Remote Sensing xxxiii, B7, p: 1398. Amsterdam.

Tjia, H.D. 1987. Complex deformations and probable fold nappe in Upper Silurian metasediments near Kuala Sawah, Negeri Sembilan. Sains Malaysiana 16(1): 33-47.

Tjia, H.D. & Al Mashoor, S.S. 1996. The Bentong Suture in Southwest Kelantan, Peninsular Malaysia. Bulletin Geological Society of Malaysia 59: 195-211.

USGS. 2005. Landslide Hazards Program. http://landslides.usgs.gov

Van Westen, C.J. 2000. The modelling of landslide hazards using Gis. Geophysics 21: 241-255.

Varnes, D.J. 1984. Landslide Hazard Zonation: A reviw of principles and practice. Natural Hazard 3: 6.

Varnes, D.J. 1996. Landslide Types and Processes. In Investigation and Mitigation, Transportation Research Board Special Report 247, Turner, A.K. & R.L. Schuster, Landslides: National Research Council, Wasington, D.C.: National Academy Press.

Zarnba, Q. & Mencl, V. 1969. Landslides and their control. Czechoslovakia: Elsevier pp. 205.

Zulfahmi, A.R. 1996. Assessment and regional zonation mapping of potential landslid hazard in Ebbw Valley. Gwen.

*Corresponding author; email: mohgah2003@yahoo.com