Debris flow hazard assessment with numerical simulation
Journal
Natural Hazards
Journal Volume
49
Journal Issue
1
Pages
137-161
Date Issued
2009
Author(s)
Abstract
Debris flow disasters are usually accompanied by serious loss of lives and properties. However, debris flows are also part of earth's natural phenomenon, and so what is the reasonable budget to be spent on mitigation measures becomes an important issue for the budget allocation processes. This article utilizes economic concepts to propose a reasonable estimation of the hazard damage and the cost of proposed mitigation measures. The proposed method is composed of four steps, namely, delineating the area of the disaster with different return periods, itemizing the land use within those areas, calculating the hazard loss using official values, and computing the expected probable maximum loss with a probability distribution. The comparison between the assessment of hazard and the economic gains of any proposed mitigation measures can be used as a reference for future decision-making process. © Springer Science+Business Media B.V. 2008.
Subjects
Debris flow; Econometric model; GIS; Hazard assessment; Numerical simulation; Risk analysis
SDGs
Other Subjects
computer simulation; damage; debris flow; econometrics; GIS; hazard assessment; numerical model; probability density function; return period; risk assessment
Type
journal article