This study focuses on evaluation of debris flow hazard zones using multiscale terrain data and a debris flow simulation model. In addition, this study compares and discusses the evaluation results obtained from a traditional statistical method and a numerical simulation model. In addition, the influence due to the precision of the terrain data is discussed. The traditional statistical method is applied to evaluate the deposition zone with predefined location. The statistical method is applicable to locations with slope below than 5 degrees. On contrary, the numerical simulation model can simulate the transition and the deposition of a debris flow event. In the past, the resolution of satellite maps is 40m by 40m and interpolation techniques had to be used to obtain higher resolution. Since year 2007, the resolution of satellite maps has increased to 5m by 5m. The results show that the incensement of data precision improves the evaluation results of hazard zone for debris events.
|Number of pages||6|
|Journal||International Review on Computers and Software|
|Publication status||Published - 2012 Nov|
All Science Journal Classification (ASJC) codes
- Computer Science(all)