Seismic Vulnerability Assessment in Ranau, Sabah, Using Two Different Models

ISPRS International Journal of Geo-Information

卷:10

Zhongchao Shi¹  SaifulAmri bin Mazlan²  JanatulAziera binti Abd Razak²  Shuib bin Rambat²  Faizah binti Che Ros² 

[1] Department of Restoration Ecology and Built Environment, Tokyo City University, 1-28-1 Tamazutsumi, Setagay-ku, Tokyo 158-8557, Japan;

[2] Malaysia-Japan International Institute of Technology (MJIIT), University Teknologi Malaysia, Jalan Sultan Yahya Petra, Kuala Lumpur 54100, Malaysia;

关键词: frequency ratio;    index of entropy;    analytical hierarchical process;    seismic vulnerability;   

DOI  :  10.3390/ijgi10050271

来源: DOAJ

【 摘 要 】

Sabah is prone to seismic activities due to its location, being geographically located near the boundaries of three major active tectonic plates; the Eurasian, India-Australia, and Philippine-Pacific plates. The 6.0 M_w earthquake that occurred in Ranau, Sabah, on 15 June 2015 which caused 18 casualties, all of them climbers of Mount Kinabalu, raised many issues, primarily the requirements for seismic vulnerability assessment for this region. This study employed frequency ratio (FR)–index of entropy (IoE) and a combination of (FR-IoE) with an analytical hierarchy process (AHP) to map seismic vulnerability for Ranau, Sabah. The results showed that the success rate and prediction rate for the areas under the relative operating characteristic (ROC) curves were 0.853; 0.856 for the FR-IoE model and 0.863; 0.906 for (FR-IoE) AHP, respectively, with the highest performance achieved using the (FR-IoE) AHP model. The vulnerability maps produced were classified into five classes; very low, low, moderate, high, and very high seismic vulnerability. Seismic activities density ratio analysis performed on the final seismic vulnerability maps showed that high seismic activity density ratios were observed for high vulnerability zones with the values of 9.119 and 8.687 for FR-IoE and (FR-IoE) AHP models, respectively.

【 授权许可】

Unknown