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[SVC27-P03] A case of sediment-related disaster in a volcanic area due to an earthquake off the coast of Fukushima Prefecture on February 13, 2021
Keywords:Earthquake, Landslide, Tephra, Structure from Motion –Multi View Stereo, Three-dimensional terrain model
Sediment disasters were found in several places due to an earthquake that occurred off the coast of Fukushima Prefecture on February 13, 2021. In Nihonmatsu City, Fukushima Prefecture, a large-scale landslide occurred on the slope at the foot of Mt. Adatara in the volcanic area.
In order to grasp the scale of the collapse and to contribute to the mechanism analysis, aerial photogrammetry by the SfM-MVS method was carried out using the aerial oblique photograph taken on February 14, the following day of the earthquake, and generated a three-dimensional landform model. In addition, the authors created photographic map (simple orthographic image) and topographic map (Red Relief Image Map).
The authors report the results of analyzing about the landslides, such as the scale of landslide, using remote sensing data.
In order to grasp the scale of the collapse and to contribute to the mechanism analysis, aerial photogrammetry by the SfM-MVS method was carried out using the aerial oblique photograph taken on February 14, the following day of the earthquake, and generated a three-dimensional landform model. In addition, the authors created photographic map (simple orthographic image) and topographic map (Red Relief Image Map).
The authors report the results of analyzing about the landslides, such as the scale of landslide, using remote sensing data.