GIS Application for Damaged Buildings Assessment and Shelter Distribution Analysis After Earthquake and Tsunami in Palu 2018

摘要

Data and disaster information is crucial to support disaster response, recovery, and relief process. Unfortunately,acquiring data during emergency situations is difficult. After a disaster occurred, information about the victim and theimpact of the disaster must be collected immediately for aid distribution purposes. Collecting shelter location data withnumber of victims and their needs must be completed swiftly as a disaster response action. Furthermore, collectinginformation of damaged buildings is also essential to determine the amount of compensation for destroyed houses.Geographic Information System combined with remote sensing is practical and reliable to help all of these tasks.WorldView-3 high resolution imagery with 0.5 m spatial resolution provided by Digital Globe is used to interpretdamaged building in Palu City study area. By comparing satellite imagery before and after disaster, damaged buildinginformation can be interpreted and extracted as a cartographic map. Cross validation with field data of damaged buildingdemonstrated that accuracy of the interpretation is approximately 80.49 %. The result of the damaged building comparedwith shelter distribution data using service area accessibility analysis and then used to analyze optimum coverage ofdisaster mitigation shelters.