Planning tsunami vertical evacuation routes using high-resolution UAV digital elevation model: case study in Drini Coastal Area, Java, Indonesia

Marfai, Muh Aris and Khakim, Nurul and Fatchurohman, Hendy and Salma, Annisa Dzikra (2021) Planning tsunami vertical evacuation routes using high-resolution UAV digital elevation model: case study in Drini Coastal Area, Java, Indonesia. Arabian Journal of Geosciences, 14 (19). ISSN 18667511

[thumbnail of Muh Aris_GE.pdf] Text
Muh Aris_GE.pdf - Published Version
Restricted to Registered users only

Download (34MB) | Request a copy

Abstract

Tsunami evacuation is a short process that must be carried out in minutes. Determining the evacuation routes and safe areas is equally important in tsunami evacuation planning. It can be established from least cost distance (LCD) anisotropic model. We use the coastal of Drini, Gunungkidul, Java, Indonesia, as the study area, which is located in a tropical coastal karst region, with a typical karst cone formation. The topographic condition of the karst cone could be an ideal location for tsunami vertical evacuation (TVE). High-resolution orthomosaic images and digital elevation model (DEM) generated from the structure from motion (SfM) process were used as the main data. The tsunami inundation model was calculated based on neighboring operations using raster calculator from the elevation value in the DEM. Land cover identification from high-scale orthomosaic images showed the variation in speed conservation values (SCVs). The slope value was also used as a surface cost that will affect the travel time to the TVE shelters. The results of the model show that TVE is the main alternative in tsunami evacuation planning beside horizontal evacuation. They provide an evaluation of the location of the assembly points and evacuation routes provided by the government, which have been considered ineffective because of the inappropriate model. The results of the study provide an overview of determining the evacuation routes and shelters. Optimum locations can minimize travel time, provide adequate capacity, and be safe from inundation. © 2021, Saudi Society for Geosciences.

Item Type: Article
Additional Information: Cited by: 4; All Open Access, Bronze Open Access, Green Open Access
Uncontrolled Keywords: Greater Sunda Islands; Java; Sunda Isles; digital elevation model; environmental planning; karst; orthophoto; topographic effect; travel time; tsunami; unmanned vehicle
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Divisions: Faculty of Geography > Departemen Geografi Lingkungan
Depositing User: Sri JUNANDI
Date Deposited: 11 Sep 2024 04:34
Last Modified: 11 Sep 2024 04:34
URI: https://ir.lib.ugm.ac.id/id/eprint/5141

Actions (login required)

View Item
View Item