Landslide factors and susceptibility mapping on natural and artificial slopes in Kundasang, Sabah

This study was carried out on the hilly topographic area in Kundasang, Sabah. This area is known to be extremely prone to landslides that occurred either naturally or by human interference to natural slopes. Aerial photographs interpretation was conducted in order to identify landslide distributions...

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Main Authors:	Kamilia Sharir, Rodeano Roslee, Lee, Khai Ern, Norbert Simon
Format:	Article
Language:	English
Published:	Penerbit Universiti Kebangsaan Malaysia 2017
Online Access:	http://journalarticle.ukm.my/11380/ http://journalarticle.ukm.my/11380/ http://journalarticle.ukm.my/11380/1/23%20Kamilia%20Sharir.pdf

id	ukm-11380
recordtype	eprints
spelling	ukm-113802018-02-15T05:24:09Z http://journalarticle.ukm.my/11380/ Landslide factors and susceptibility mapping on natural and artificial slopes in Kundasang, Sabah Kamilia Sharir, Rodeano Roslee, Lee, Khai Ern Norbert Simon, This study was carried out on the hilly topographic area in Kundasang, Sabah. This area is known to be extremely prone to landslides that occurred either naturally or by human interference to natural slopes. Aerial photographs interpretation was conducted in order to identify landslide distributions across three assessment years (2012, 2009 and 1984). These datasets were classified into two landslides groups based on their occurrences; natural and artificial. A total of 362 naturally occurring landslides were identified and another 133 are artificial slope landslides. Physical parameters which include lithology, slope angle, slope aspect and soil series were analyzed with each landslide group to examine the different influence of these parameters on each of the group. From the analysis, the landslide density for the natural landslide group shows that more than 35° slope angle and slope aspect facing east and southwest are prone to landslides. In terms of geological materials, high landslide density is recorded in the phyllite, shale, siltstone and sandstone lithologies group and the Pinosuk, Kepayan and Trusmadi soil series. In contrast, for the artificial slope landslide, high landslide density is observed in the 25°-35° slope angle and similar density in every slope aspect classes. The geological materials however have similar landslide density across their factors’ classes. The landslide density technique was also used to generate the landslide susceptibility maps for both landslide conditions. Validation of the maps shows acceptable accuracy of 71% and 74%, respectively, for both natural and artificial slope landslide susceptibility maps and this shows that these maps can be used for future land use planning. Penerbit Universiti Kebangsaan Malaysia 2017-09 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/11380/1/23%20Kamilia%20Sharir.pdf Kamilia Sharir, and Rodeano Roslee, and Lee, Khai Ern and Norbert Simon, (2017) Landslide factors and susceptibility mapping on natural and artificial slopes in Kundasang, Sabah. Sains Malaysiana, 46 (9). pp. 1531-1540. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol46num9_2017/contentsVol46num9_2017.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	This study was carried out on the hilly topographic area in Kundasang, Sabah. This area is known to be extremely prone to landslides that occurred either naturally or by human interference to natural slopes. Aerial photographs interpretation was conducted in order to identify landslide distributions across three assessment years (2012, 2009 and 1984). These datasets were classified into two landslides groups based on their occurrences; natural and artificial. A total of 362 naturally occurring landslides were identified and another 133 are artificial slope landslides. Physical parameters which include lithology, slope angle, slope aspect and soil series were analyzed with each landslide group to examine the different influence of these parameters on each of the group. From the analysis, the landslide density for the natural landslide group shows that more than 35° slope angle and slope aspect facing east and southwest are prone to landslides. In terms of geological materials, high landslide density is recorded in the phyllite, shale, siltstone and sandstone lithologies group and the Pinosuk, Kepayan and Trusmadi soil series. In contrast, for the artificial slope landslide, high landslide density is observed in the 25°-35° slope angle and similar density in every slope aspect classes. The geological materials however have similar landslide density across their factors’ classes. The landslide density technique was also used to generate the landslide susceptibility maps for both landslide conditions. Validation of the maps shows acceptable accuracy of 71% and 74%, respectively, for both natural and artificial slope landslide susceptibility maps and this shows that these maps can be used for future land use planning.
format	Article
author	Kamilia Sharir, Rodeano Roslee, Lee, Khai Ern Norbert Simon,
spellingShingle	Kamilia Sharir, Rodeano Roslee, Lee, Khai Ern Norbert Simon, Landslide factors and susceptibility mapping on natural and artificial slopes in Kundasang, Sabah
author_facet	Kamilia Sharir, Rodeano Roslee, Lee, Khai Ern Norbert Simon,
author_sort	Kamilia Sharir,
title	Landslide factors and susceptibility mapping on natural and artificial slopes in Kundasang, Sabah
title_short	Landslide factors and susceptibility mapping on natural and artificial slopes in Kundasang, Sabah
title_full	Landslide factors and susceptibility mapping on natural and artificial slopes in Kundasang, Sabah
title_fullStr	Landslide factors and susceptibility mapping on natural and artificial slopes in Kundasang, Sabah
title_full_unstemmed	Landslide factors and susceptibility mapping on natural and artificial slopes in Kundasang, Sabah
title_sort	landslide factors and susceptibility mapping on natural and artificial slopes in kundasang, sabah
publisher	Penerbit Universiti Kebangsaan Malaysia
publishDate	2017
url	http://journalarticle.ukm.my/11380/ http://journalarticle.ukm.my/11380/ http://journalarticle.ukm.my/11380/1/23%20Kamilia%20Sharir.pdf
first_indexed	2023-09-18T20:00:08Z
last_indexed	2023-09-18T20:00:08Z
_version_	1777406792900280320

Landslide factors and susceptibility mapping on natural and artificial slopes in Kundasang, Sabah

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