Mass movement disaster risk mitigation in Clapar district and surrounding area, Banjarnegara Regency, Central Java

Abstract

The mass movement that affected by gravitation as it went down mainly occurred repeatedly during the rainy season in the same area. Until now, there was no clear method to anticipate it. Therefore, maximum management was unable to be implemented. Banjarnegara regency-Central Java, known as one of the high-risk regency. The movement typeset was not also avalanche, but also flow, collapse, creep, and complex movement. Mass movement research during 2017-2018 showed that land and rock in Clapar and its surrounding, was horizontally moved for 0.15-0.58 meter, and vertically moved for 0.01-0.31 meter. Community-based disaster risk management can be utilized to mitigate mass movement through direct adaptation on land and building or cropping type and pattern.