Development of web-based spatial decision support system using landslide hazard mapping outcomes: an example of GIS-based hazard assessment

Abstract

Presently, the risk of natural hazards is continuously increasing which may cause noticeable casualties and destruction under the influence of climate change. Information regarding the hazard characteristics, capacity, susceptibility, and vulnerability in pre-disaster phases is critical in realizing efficient disaster management. There are numerous GIS-based hazard assessment studies have been done by researchers every year; however, most of their GIS-based outcomes have rarely been effectively used for supporting the decision-making processes in real situations. The objective of the study is to propose an appropriate way of using these GIS-based hazard assessment outcomes to develop a Web-based platform to effectively support the decision-making processes. The GIS-based hazard assessment outcomes from previous work are used in this study to develop a Web-based spatial decision support system as an example of practicing the proposed approach. Finally, there are 3 modules including general module, thematic single factor maps module, and results module have been designed and developed in the system. This approach provides a new way of making better use of all kinds of GIS-based hazard assessment outcomes, which can be used as an effective decision-making support tool. In addition, it can be used as a guideline for future research.