[H-DS05] Landslides and related phenomena

[HDS05-P03] Landslide mapping using AW3D 2m DEM: a case study in Tegucigalpa, Honduras

*佐藤 剛¹、八木 浩司²、Garcia-Urquia Elias³、Mullings Najera Mark³、桑野 健⁴、林 一成⁵、磯野 賀瑞夫⁶ (1.帝京平成大学環境情報学研究科、2.山形大学地域教育文化学部、3.National Autonomous University of Honduras、4.国際航業株式会社、5.奥山ボーリング株式会社、6.リモート・センシング技術センター)

キーワード：Landslide distribution map, AW3D, Tegucigalpa

In 1998, Tegucigalpa, the capital of the Republic of Honduras, suffered heavy damages by landslides induced by Hurricane Mitch. We have conducted the project of landslide mapping and susceptibility evaluation to reduce landslide disasters as a contribution of the work carried out by the Japan International Cooperation Agency (JICA) since 2015. In this project, we used digital air-photographs taken by JICA and high resolution DEM (Digital Elevation Model) generated by NTT Data and RESTEC (Remote Sensing Technology Center of Japan) using Digital Globe imagery. These data enabled us to create a detailed landslide distribution map to compare with the previous map that used 1:50,000 Honduran topographic data as base map. In the presentation, we will introduce the result of landslide mapping and explain the advantage of using the high-resolution AW3D 2m DEM.