Sains Malaysiana 41(12)(2012): 1613–1620

 

Space-Time Behavior of Klang Valley Region Slope Failures

(Perilaku Ruang dan Masa Kegagalan Cerun di Kawasan Lembah Klang)

 

 

P. Thanapackiam*, O. S. Khairulmaini & A. G. Fauza

Department of Geography, University of Malaya, 50603 Kuala Lumpur, Malaysia

 

Diserahkan: 25 Januari 2012 / Diterima: 6 Ogos 2012

 

 

ABSTRACT

In the last decade slope failure intensity and frequency has increased. This article investigates slope failure distribution and trend change and the tendency of spatial direction of slope failures in the Klang Valley Region (KVR) of Malaysia. The change in land cover especially for urbanization and population pressure has notably influenced spatial and temporal variations in slope failure occurrences in the KVR. This study recognized two significant impacts of slope failures: increase in intensity and frequency of slope failures from 1991 to November 2011 and spatial direction of slope failures in the KVR. Both of these effects create severe stresses on the population of the KVR. The study observed that the temporal and spatial advances of slope failures would continue to increase in intensity and frequency in the not so distant future as the environment would become more stressful as a result of urbanization. The knowledge generated from the work would be valuable to all stakeholders affected by slope failures in the KVR and lead the way towards achieving a more sustainable slope development planning in the future.

 

Keywords: Slope failures; spatial direction; sustainable development; temporal direction

 

ABSTRAK

Kadar kegagalan cerun semakin meningkat sejak sedekad yang lalu. Makalah ini melaporkan taburan dan trend kegagalan cerun serta arah kecenderungan daripada segi ruangan kejadian kegagalan cerun di Kawasan Lembah Klang (KVR) di Malaysia. Perubahan ciri liputan bumi terutamanya diakibatkan oleh perbandaran dan tekanan penduduk mempengaruhi kejadian kegagalan cerun daripada segi ruangan dan masa. Kajian ini mengenal pasti dua impak signifikan dalam kejadian kegagalan cerun: pertambahan kejadian kegagalan cerun dari 1991 ke November 2011 dan perkembangan arah kegagalan cerun. Kajian ini mendapati hala masa dan ruang kegagalan cerun semakin meningkat memandangkan tekanan persekitaran yang meningkat akibat perbandaran. Kajian ini diharap dapat menyumbangkan ilmu untuk pembangunan cerun yang mampan pada masa hadapan.

 

Kata kunci: Hala masa; hala ruang; kegagalan cerun; pembangunan mampan

RUJUKAN

Cardinali, M., Galli, M., Guzzetti, F., Ardizzone, F., Reichenbach, P. & Bartoccini, P. 2006. Ageomorphological approach to the estimation of landslide hazards and risks in Umbria, Central Italy. Natural Hazards and Earth System Sciences 2: 57-72.

Chan, N.W. 1998. Responding to landslide hazards in rapidly developing Malaysia: Acase of economics versus environmental protection. Disaster Prevention and Management 7(1): 14-27.

Chang, K.T. & Chiang, S.H. 2009. An integrated model for predicting rainfall-induced landslides. Geomorphology 105(3-4): 366-373.

Chatterjea, K. 2009. Severe wet spells and vulnerability of urban slopes: Case of Singapore. Natural Hazards (Online) 56(1):1-18..

Chau, K.T., Sze, Y.L., Fung, M.K., Wong, W.Y., Fong, E.L. & Chan, L.P.C. 2002. Landslide hazard analysis for Hong Kong using landslide inventory and GIS. Computers & Geosciences 30: 429-443.

Collison, J.C. & Anderson, M.G. 1996. Using a combined slope hydrology/stability model to identify suitable conditions for landslide prevention by vegetation in the humid tropics. Earth Surface Processes and Landforms 21: 737-747.

Crozier M.J. 1986. Landslides: Causes, Consequences & Environment. Kent: Croom Helm Ltd.

Dai, F.C. & Lee, C.F. 2001. Frequency-volume relation and prediction of rainfall-induced landslides. Engineering Geology 59(3-4): 253-266.

Department of Agriculture Malaysia (DOA). 2004. Landuse data. Putrajaya, Ministry of Agriculture.

Department of Agriculture Malaysia (DOA). 2008. Landuse data. Putrajaya, Ministry of Agriculture.

Department of Irrigation and Drainage (DID). 2008. Explanatory note on landslides in hilly terrain. Retrieved on 25.9.2008, 11.39 am from http://infobanjir.water.gov.my/highlands.htm.

Department of Prime Minister [DPM]. 2008. Klang Valley Region Digital Map. Putrajaya: Department of Prime Minister.

Department of Statistics Malaysia (DOS). 2011. Population Census. Putrajaya: Department of Statistics Malaysia.

Fernandes, N.F., Guimarães, R.F., Gomes, R.A.T., Vieira, B.C., Montgomery, D.R. & Greenberg, H. 2004. Topographic controls of landslides in Rio de Janeiro: Field evidence and modelling. CATENA 5(2): 163-181.

Fuchs, S., Heiss, K. & Hübl, J. 2007. Towards an empirical vulnerability function for use in debris flow risk assessment. Natural Hazards Earth System Sciences 7: 495-506.

Gao, J. & Maro, J. 2010. Topographic controls on evolution of shallow landslides in pastoral Wairarapa, New Zealand, 1979–2003. Geomorphology 114(3): 373-381.

Griffiths, J.S., Hart, A.B., Mather, A.E. & Stokes, M. 2005. Assessment of some spatial and temporal issues in landslide initiation within the Rio Aguas Catchment, South-East Spain. Landslides 2: 183-192.

Hufschmidt, G.A. 2011. Comparative analysis of several vulnerability concepts. Natural Hazards 58: 621-643.

JUPEM (Department of Survey and Mapping of Malaysia). 2004. Digital Map of Klang Valley Region. Kuala Lumpur: Directorate of National Mapping Malaysia Printers.

Khairulmaini, O.S. & Tengku Adeline, T.H. 2006. Urban slope failures - A first approximation process- response model and classification systems. Poster presentation. Kuala Lumpur: Department of Geography, University of Malaya.

Khoo, S.G. & Van, K.K.Y. 1996. Urbanisation and Urban Growth in Malaysia. Population Census Monograph Series No.1. Putrajaya: Department of Statistics Malaysia.

Knapen, A., Kitutu, M.G., Poesen, J., Breugelmans, D.J. & Muwanga, A. 2006. Landslides in a densely populated country at the footslopes of Mount Elgon (Uganda): Characteristics and causal factors. Geomorphology 73: 149-165.

Malaysian Meteorological Department (MMD). 2009. Climate of Malaysia. Retrieved on 2.7.2009 from http://www.met.gov.my/english/education/climate/climate01. html.

Papathoma-Köhle, M., Neuhäuser, B., Ratzinger, K., Wenzel, H. & Dominey-Howes, D. 2007. Elements at risk as a framework for assessing the vulnerability of communities to landslides. Natural Hazards and Earth System Sciences 7: 765-779.

Polemio, M. & Petrucci, O. 2000. Rainfall as a landslide triggering factor: An overview of recent international research. Paper presented at the Conference on Landslides in Research, Theory and Practice. Cardiff, UK: Thomas Telford.

Raj, J.K. 2000. Rainfall and slope failures in the granitic bedrock areas of Peninsular Malaysia. Proceedings of the Annual Geological Conferences 2000. Penang, Malaysia: Geological Society of Malaysia.

Raj, J.K. 1998. The failure of a slope cut into the weathering profile developed over a porphyritic biotite granite. Journal of Asia Earth Sciences 16(4): 419-427.

Saldivar-Sali, A. & Einstein, H.H. 2007. Alandslide risk rating system for Baguio, Philippines. Engineering Geology 91: 85-99.

Sarkar, S., Bonnard, C.H. & Noverraz, F. 2000. Risk Assessment of potential landslide dams in the Valley of La Veveyse and Veveyse de Fegire, Switzerland. In: Landslides in Research, Theory and Practice Vol. 3,Bromhead, E., Dixon, N. and Ibsen, M-L. (eds). London, UK: Thomas Telford. pp. 1309-1314.

Schuster, R.L. & Highland, L.M. 2007. The third Hans Cloos lecture. Urban landslides: Socioeconomic impacts and overview of mitigative strategies. Bulletin of Engineering Geology and the Environment 66(1): 1-27. DOI: 10.1007/s10064-006-0080-z.

Selby, M.J. 1979. Slopes and weathering In Man and Environmental Processes: Studies in Physical Geography, edited by Gregory, K.J. & Walling, D.E. Dawson: Westview Press.

Sharifah, N.S.O., Faisal, M.J. & Shattri, M. 2004. GIS/RS for landslides zonation in Pos Slim-Cameron Highlands district, Peninsular Malaysia. Disaster Prevention and Management 13(1): 24-32.

Szabó, J. 2003. The relationship between landslide activity and weather: Examples from Hungary. Natural Hazards and Earth System Sciences 3: 43-52.

Tan, B.K. 1995. Some experiences on weathering of rocks and its engineering significance in Malaysia. IKRAM Geotechnical Meeting  7-9 June, Penang, vol.2, Lect.6, p. 22.

Terzaghi, K., Peck, R.B. & Mesri, G. 1996. Soil Mechanics in Engineering Practice (3rd ed.) New York: John Wiley & Sons, Inc.

Thanapackiam, P. 2012. Slope failure hazards: Aspatial and temporal study of the Klang Valley Region, Peninsular Malaysia. PhD thesis, University of Malaya (unpublished).

Thanapackiam, P. & Khairulmaini, O.S. 2008. Vulnerability and adaptive capacity of urban dwellers to the slope failure threat – Astudy of the Klang Valley Region. Presented in Southeast Asian Geography Association (SEAGA) 2008 International Conference in University of Diliman, Quezon City, Philippines. (unpublished).

Thanapackiam, P., Khairulmaini, O.S. & Fauza, A.G. 2011. Slope failure hazards and early warning system in the Klang Valley Region. 2nd National Symposium on ‘Resilience, Vulnerability and Adaptation to the Climate Change Threat’, 19 July 2011, Department of Geography, University of Malaya, Kuala Lumpur.

Thanapackiam, P., Khairulmaini, O.S. & Fauza, A.G. 2012. Vulnerability and adaptive capacities to slope failure threat: Astudy of the Klang Valley Region. Natural Hazards (online).62(3): 805-826.

United States Geological Survey (USGS). 2004. Landslide types and processes. Fact Sheet 2004-3072. Retrieved from http://pubs.usgs.gov/fs/2004/3072/fs-2004-3072.html.

Varnes, D.J. 1984. Landslides Hazard Zonation: A Review of Principles and Practice. Paris: UNESCO.

Zhao, C.H., Lee, C.F., Li, J. & Xu, Z.W. 2002. On the spatial relationship between landslides and causative factors on Lantau Island, Hong Kong. Geomorphology 43(3-4): 197-207.

 

 

 

*Pengarang untuk surat-menyurat; email: tnpba@yahoo.com