Staff View: Study of regional monsoonal effects on landslide hazard zonation in Cameron Highlands, Malaysia

Study of regional monsoonal effects on landslide hazard zonation in Cameron Highlands, Malaysia

In general, landslides in Malaysia mostly occurred during northeast and southwest periods, two monsoonal systems that bring heavy rain. As the consequence, most landslide occurrences were induced by rainfall. This paper reports the effect of monsoonal-related geospatial data in landslide hazard...

Full description

Saved in:

Bibliographic Details
Main Authors:	Matori, A.N, Basith, A., Harahap, I.S.H.
Format:	Citation Index Journal
Published:	2011
Subjects:	T Technology (General) GE Environmental Sciences TA Engineering (General). Civil engineering (General)
Online Access:	http://eprints.utp.edu.my/5688/1/ArabJGeo-published.pdf http://www.springerlink.com/content/e174p67536759487/ http://eprints.utp.edu.my/5688/
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my.utp.eprints.5688
record_format	eprints
spelling	my.utp.eprints.56882017-03-20T03:18:23Z Study of regional monsoonal effects on landslide hazard zonation in Cameron Highlands, Malaysia Matori, A.N Basith, A. Harahap, I.S.H. T Technology (General) GE Environmental Sciences TA Engineering (General). Civil engineering (General) In general, landslides in Malaysia mostly occurred during northeast and southwest periods, two monsoonal systems that bring heavy rain. As the consequence, most landslide occurrences were induced by rainfall. This paper reports the effect of monsoonal-related geospatial data in landslide hazard modeling in Cameron Highlands, Malaysia, using Geographic Information System (GIS). Land surface temperature (LST) data was selected as the monsoonal rainfall footprints on the land surface. Four LST maps were derived from Landsat 7 thermal band acquired at peaks of dry and rainy seasons in 2001. The landslide factors chosen from topography map were slope, slope aspect, curvature, elevation, land use, proximity to road, and river/lake; while from geology map were lithology and proximity to lineament. Landslide characteristics were extracted by crossing between the landslide sites of Cameron Highlands and landslide factors. Using which, the weighting system was derived. Each landslide factors were divided into five subcategories. The highest weight values were assigned to those having the highest number of landslide occurrences. Weighted overlay was used as GIS operator to generate landslide hazard maps. GIS analysis was performed in two modes: (1) static mode, using all factors except LST data; (2) dynamic mode, using all factors including multi-temporal LST data. The effect of addition of LST maps was evaluated. The final landslide hazard maps were divided into five categories: very high risk, high risk, moderate, low risk, and very low risk. From verification process using landslide map, the landslide model can predict back about 13–16% very high risk sites and 70–93% of very high risk and high risk combined together. It was observed however that inclusion of LST maps does not necessarily increase the accuracy of the landslide model to predict landslide sites. 2011-02-21 Citation Index Journal PeerReviewed application/pdf http://eprints.utp.edu.my/5688/1/ArabJGeo-published.pdf http://www.springerlink.com/content/e174p67536759487/ Matori, A.N and Basith, A. and Harahap, I.S.H. (2011) Study of regional monsoonal effects on landslide hazard zonation in Cameron Highlands, Malaysia. [Citation Index Journal] http://eprints.utp.edu.my/5688/
institution	Universiti Teknologi Petronas
building	UTP Resource Centre
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Petronas
content_source	UTP Institutional Repository
url_provider	http://eprints.utp.edu.my/
topic	T Technology (General) GE Environmental Sciences TA Engineering (General). Civil engineering (General)
spellingShingle	T Technology (General) GE Environmental Sciences TA Engineering (General). Civil engineering (General) Matori, A.N Basith, A. Harahap, I.S.H. Study of regional monsoonal effects on landslide hazard zonation in Cameron Highlands, Malaysia
description	In general, landslides in Malaysia mostly occurred during northeast and southwest periods, two monsoonal systems that bring heavy rain. As the consequence, most landslide occurrences were induced by rainfall. This paper reports the effect of monsoonal-related geospatial data in landslide hazard modeling in Cameron Highlands, Malaysia, using Geographic Information System (GIS). Land surface temperature (LST) data was selected as the monsoonal rainfall footprints on the land surface. Four LST maps were derived from Landsat 7 thermal band acquired at peaks of dry and rainy seasons in 2001. The landslide factors chosen from topography map were slope, slope aspect, curvature, elevation, land use, proximity to road, and river/lake; while from geology map were lithology and proximity to lineament. Landslide characteristics were extracted by crossing between the landslide sites of Cameron Highlands and landslide factors. Using which, the weighting system was derived. Each landslide factors were divided into five subcategories. The highest weight values were assigned to those having the highest number of landslide occurrences. Weighted overlay was used as GIS operator to generate landslide hazard maps. GIS analysis was performed in two modes: (1) static mode, using all factors except LST data; (2) dynamic mode, using all factors including multi-temporal LST data. The effect of addition of LST maps was evaluated. The final landslide hazard maps were divided into five categories: very high risk, high risk, moderate, low risk, and very low risk. From verification process using landslide map, the landslide model can predict back about 13–16% very high risk sites and 70–93% of very high risk and high risk combined together. It was observed however that inclusion of LST maps does not necessarily increase the accuracy of the landslide model to predict landslide sites.
format	Citation Index Journal
author	Matori, A.N Basith, A. Harahap, I.S.H.
author_facet	Matori, A.N Basith, A. Harahap, I.S.H.
author_sort	Matori, A.N
title	Study of regional monsoonal effects on landslide hazard zonation in Cameron Highlands, Malaysia
title_short	Study of regional monsoonal effects on landslide hazard zonation in Cameron Highlands, Malaysia
title_full	Study of regional monsoonal effects on landslide hazard zonation in Cameron Highlands, Malaysia
title_fullStr	Study of regional monsoonal effects on landslide hazard zonation in Cameron Highlands, Malaysia
title_full_unstemmed	Study of regional monsoonal effects on landslide hazard zonation in Cameron Highlands, Malaysia
title_sort	study of regional monsoonal effects on landslide hazard zonation in cameron highlands, malaysia
publishDate	2011
url	http://eprints.utp.edu.my/5688/1/ArabJGeo-published.pdf http://www.springerlink.com/content/e174p67536759487/ http://eprints.utp.edu.my/5688/
_version_	1738655422378672128
score	13.211869

Study of regional monsoonal effects on landslide hazard zonation in Cameron Highlands, Malaysia

Similar Items