JpGU-AGU Joint Meeting 2020

Presentation information

[J] Poster

H (Human Geosciences ) » H-GM Geomorphology

[H-GM03] Geomorphology

convener:Tsuyoshi Hattanji(Faculty of Life and Environmental Sciences, University of Tsukuba), Masayuki Seto(Fukushima Future Center for Regional Revitalization, Fukushima University)

[HGM03-P11] Acquisition of detailed topographic data for active volcano using UAV LiDAR

*Takayama Toko1, Takayuki Hashimoto1, Naijia Zhang1, Yuto Nomura1 (1.Asia Air Survey Co.,Ltd.)

Keywords:Unmanned Aerial Vehicle, LiDAR, Landslide, Volcano

In Mt. Hakone, an active volcano, volcanic landslides have occurred in the Owakudani and Sounzan areas in the past, and countermeasures have been taken. However, due to the influence of volcanic activity, it is difficult to detail survey.
Therefore, in order to provide basic data for the landslide prevention, the authors prepared floor plans, cross-sectional plans, and a ground temperature distribution map of about 0.8 km2 of Owakudani and Sounzan mountains using a laser scanner and an infrared camera equipped with a UAV (Unmanned Aerial Vehicle).
The survey was carried out from March to April, 2019, and three-dimensional point group data of 400 points/m2 were acquired by a high-density laser scanner.
As a result, it became possible to express detailed microtopography of crater and fumarole, and it was also possible to confirm the deformation and small collapse of countermeasure works such as the crack of hillside work.
Continuous measurement in the future is considered to be effective as a monitoring method.