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https://ptsldigital.ukm.my/jspui/handle/123456789/499530Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | Juhari Mat Akhir, Asst. Prof. Dr. | - |
| dc.contributor.author | Mezughi Tareq Hamed Mohamed (P48807) | - |
| dc.date.accessioned | 2023-10-13T09:32:34Z | - |
| dc.date.available | 2023-10-13T09:32:34Z | - |
| dc.date.issued | 2014-04-17 | - |
| dc.identifier.other | ukmvital:79887 | - |
| dc.identifier.uri | https://ptsldigital.ukm.my/jspui/handle/123456789/499530 | - |
| dc.description | Landslides are caused by a variety of environmental factors, most are related to the fields of geology, geomorphology, hydrology and land use. The potential hazard for a landslide in an area depends on the number of causative factors present, and their severity and interaction. Previous studies had identified many landslide-related factors that have been commonly considered important in landslide susceptibility analysis. In this study, two additional geological factors have been proposed are strata bedding and foliation. This study used a Geographic Information System (GIS) to assess the role of the two proposed geological factors in causing landslides in the study area and to find their significant contributing to improve landslide susceptibility mapping. This study was conducted in an area located in the central northern part of Malaysia between Gerik and Jeli. The area is well known for landslide occurrence especially along the E-W highway. Thirteen chosen factors used for the landslide susceptibility analysis were: slope, aspect, elevation, curvature, drainage density, lithology, lineament density, soil texture, rainfall, distance from road, cut slope, foliation and strata bedding. A comprehensive database containing the causative factors information was constructed from multi-source data and it was used to extract the thematic maps of the factors. The frequency ratio (FR) analysis was employed in this study to assess the susceptibility of the area to landslides and to evaluate the role of the two proposed factors in causing landslides. The results of the analysis revealed that the two proposed factors play a role towards landslide occurrences. Foliation angle between 35°-45° and strata beddings dip as the slope and incline less than the slope have a significant FR values equal to 1.2 and 1.4 respectively. Furthermore, this study evaluated the significant contributing of the foliation and strata bedding factors to map landslide susceptibility in the study area. The factor effect analysis proved that adding the two geological factors to the model increased the prediction accuracy of the landslide susceptibility index by 5.27 percentage point, comparing with the model that used only the eleven commonly used factors. The validation of assessment showed a satisfactory agreement between the susceptibility index and the landslide locations. The area under curve (AUC) of success rate for the model included the strata bedding and foliation factors was (88.75%) and the AUC of the prediction rate was (82.21%), indicating high performance of the model and high prediction accuracy as well. The error rate parameters, false positive (FP), false negative (FN) and error for misclassification (EM) were calculated for the four produced landslide susceptibility zone maps using contingency matrix method. Based on the contingency matrix assessment, the landslide susceptibility map prepared from the model included the strata bedding and foliation factors, showed the lowest FP (0.179), FN (0.157) and EM (00.168). This map has the smallest predicted area of high and very high landslide susceptibility zone (17.3%) that involves the most observed landslide (88.48 % of landslides). The results obtained from this study revealed the significant contribution of the two proposed factors (foliation and strata bedding) in mapping landslide susceptibility.,PhD | - |
| dc.language.iso | eng | - |
| dc.publisher | UKM, Bangi | - |
| dc.relation | Faculty of Science and Technology / Fakulti Sains dan Teknologi | - |
| dc.rights | UKM | - |
| dc.subject | Strata bedding | - |
| dc.subject | Foliation | - |
| dc.subject | landslide susceptibility | - |
| dc.subject | Landslides - Perak | - |
| dc.title | Assessment of the contribution of strata bedding and foliation factors to landsslide susceptibility along the E-W Highway (Gerik-Jeli), Malaysia using GIS | - |
| dc.type | Theses | - |
| dc.format.pages | 279 | - |
| dc.identifier.callno | QE599.M4M449 2014 tesis | - |
| dc.identifier.barcode | 001062 | - |
| Appears in Collections: | Faculty of Science and Technology / Fakulti Sains dan Teknologi | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| ukmvital_79887+SOURCE1+SOURCE1.0.PDF Restricted Access | 14.19 MB | Adobe PDF |  View/Open |
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