A Study on the Causes of Debris Flow Damage '88 in Southern Thailand

Abstract

This report deals with the influence of deforestation and shifting cultivation on the occurrence of landslides in an area in southern Thailand which in 1988 suffered from intensive rainfall and severe flooding.
LANDSAT and SPOT data have been used in combination with a DTM over the area in an effort to calculate a figure of the rate of defotestation, to estimate the extent of the damage of the landslides in the mountainous areas as well as to search for potential relationships between the landslides, the landcover and the slope inclination. Other factors, such as the amount of rain at the time and the geology in the area, have also been considered briefly.