Landslide Vulnerability Assessment (LVAs): A Case Study from Kota Kinabalu, Sabah, Malaysia

Rodeano Roslee, Tajul Anuar Jamaludin, Norbert Simon

Abstract


DOI: 10.17014/ijog.4.1.49-59

The topic on Landslide Vulnerability Assessment (LVAs) in Malaysia is relatively new and received little attention from geoscientists and engineers. This research paper tries to formulate the concept of LVAs by taking into account the science and socio-economic aspects. A new approach in vulnerability concept is also introduced herein. To achieve this goal, a framework was designed for assessing the LVAs. The framework was formulated semiquantitatively through the development of database for the risk elements (human and properties) based on information from secondary data (technical reports), extensive review of literature, and field observations. The vulnerability parameters included in assessing LVAs are 1) physical implication (building structures, internal materials, property damage, infrastructural facilities, and stabilization actions), 2) social status (injury, fatalities, safety, loss of accommodation, and public awareness), and 3) interference on environment (affected period, daily operation, and diversity). Each considered parameter in the vulnerability assessment is allocated with a certain index value ranges from 0 (0 % damage/victims/period), 0.25 (1 - 25% damage/victims/period), 0.50 (26 - 50% damage/victims/period), 0.75 (51 - 75% damage/victims/period), and 1.00 (75 - 100% damage/victims/period). All of these parameters are compiled and analyzed with “Landslide Distribution Map” (LDM) to generate a “Landslide Vulnerability Degree map (LVD)”. The LDM was produced based on field studies and satellite image interpretations in order to locate the landslide locations in the studied area. Finally, three types of physical, human, and environment vulnerabilities were then classified into five classes of vulnerabilities, namely: Class 1 (< 0.20): Very Low Vulnerability; Class 2 (0.21 - 0.40): Low Vulnerability; Class 3 (0.41 - 0.60): Medium Vulnerability; Class 4 (0.61 - 0.80): High Vulnerability); and Class 5 (> 0.81): Very High Vulnerability. Results from this study indicate that a further study is needed to the areas of high to very high vulnerability only. This LVAs approach is suitable as a guideline for preliminary development planning, controlling, and managing the landslide hazard /risk in the studied area and potentially to be extended with different background environments.


Keywords


vulnerability; risk elements; landslide risk management; Malaysia

References


Aleotti, P. and Chowdhury, R., 1999. Landslide hazard assessment: summary review and new perspectives, Bulletin of Engineeringg Geology and Environment, 58, p.21-44. DOI:10.1007/s100640050066

Alexander, D., 2005. Vulnerability to landslides. In: Glade, T., Anderson, M. and Crozier M. J. (eds.), Landslide hazard and risk. John Wiley & Sons, Ltd., Chichester, West Sussex. p.175-198.

DOI:10.1002/9780470012659.ch5

Anonymous, 2007. TC304 Engineering Practice of Risk Assessment & Management: Glossary Terms. ISSMGE, International Society of Soil Mechanics and Geotechnical Engineering. www.engmath.dal.ca/tc32 [01/06/2014].

Anonymous, 2008a. Meeting on Integrated Slope Information System (ISIS). Public Work Department, Kuala Lumpur.

Anonymous, 2008b. Taburan Penduduk dan Ciri-Ciri Asas Demografi - Banci Penduduk dan Perumahan Malaysia 1980, 1991, 2000, and 2008. ISSN 1823-9358. Jabatan Perangkaan Malaysia. Kuala Lumpur.

Anonymous, 2009. Ciri-ciri asas penduduk mengikut daerah pentadbiran. ISSN 1823-9358. Jabatan Perangkaan Malaysia. Kuala

Lumpur.

Anonymous, 2011a. Guidelines for landslide susceptibility, hazard, and risk assessment and zoning, UPC, Technical University of

Catalonia.173pp.

Anonymous, 2011b. Landslide at Jalan Signal Hill: motorists advised to be careful. New Sabah Times [01 August 2010: 7].


Full Text: PDF

Refbacks

  • There are currently no refbacks.


Creative Commons License
Indonesian Journal on Geoscience by https://ijog.geologi.esdm.go.id/index.php/IJOG/index is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

 

Indexing Site :

 

 

 

Follow us on:


shopify visitor statistics
View My Stats