Analysis of GIS-Based Disaster Risk and Land Use Changes in the Impacted Area of Mudflow Disaster Lapindo

Abstract

The mudflow disaster Lapindo in Sidoarjo Indonesia, that has occurred since 2006, until now still poses a risk of danger to residential settlements in the impacted areas. This study aims to make disaster risk analysis and land use changes in disaster impacted areas since before the disaster occurred until now. This research is expected to be very useful as a basis for developing spatial policies in the region. The method used is quantitative based on satellite imagery, then GIS-based data is analyzed quantitatively. GIS-based disaster risk analysis can be used as a reference in spatial revisions that can anticipate spatial regional developments, especially for the needs of residential settlements. Observations from satellite imagery show a very significant level of change in residential land which is now 42.1% and the level of disaster risk varies with the medium-high index. With the results of this study, in an effort to improve the resilience index of the region, planning the location of residential land should use land outside the impacted area in order to ensure the safety and security of the community.