Landslides triggered by an earthquake and heavy rainfalls at Aso volcano, Japan, detected by UAS and SfM-MVS photogrammetry
Abstract Unmanned aerial systems (UASs) and structure-from-motion multi-view stereo (SfM-MVS) photogrammetry have attracted a tremendous amount of interest for use in the creation of high-definition topographic data for geoscientific studies. By using these techniques, this study examined the topogr...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2018-03-01
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| Series: | Progress in Earth and Planetary Science |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s40645-018-0169-6 |
| _version_ | 1819179221293989888 |
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| author | Hitoshi Saito Shoichiro Uchiyama Yuichi S. Hayakawa Hiroyuki Obanawa |
| author_facet | Hitoshi Saito Shoichiro Uchiyama Yuichi S. Hayakawa Hiroyuki Obanawa |
| author_sort | Hitoshi Saito |
| collection | DOAJ |
| description | Abstract Unmanned aerial systems (UASs) and structure-from-motion multi-view stereo (SfM-MVS) photogrammetry have attracted a tremendous amount of interest for use in the creation of high-definition topographic data for geoscientific studies. By using these techniques, this study examined the topographic characteristics of coseismic landslides triggered by the 2016 Kumamoto earthquake (Mw 7.1) in the Sensuikyo area (1.0 km2) at Aso volcano, Japan. The study area has frequently experienced rainfall-induced landslide events, such as those in 1990, 2001, and 2012. We obtained orthorectified images and digital surface models (DSMs) with a spatial resolution of 0.06 m before and after the 2016 Kumamoto earthquake. By using these high-definition images and DSMs, we detected a total of 54 coseismic landslides with volumes of 9.1–3994.6 m3. These landslides, many of which initiated near topographic ridges, were typically located on upside hillslopes of previous rainfall-induced landslide scars that formed in 2012. This result suggests that the topographic effect on seismic waves, i.e., amplification of ground acceleration, was important for coseismic landslide initiation in the study area. The average depth of the coseismic landslides was 1.5 m, which is deeper than the depth of the rainfall-induced landslides prior to these. The total sediment production of the coseismic landslides reached 2.5 × 104 m3/km2, which is of the same order as the sediment production triggered by the previous single heavy rainfall event. This result indicates that the effects of the 2016 Kumamoto earthquake in terms of sediment production and topographic changes were similar to those of the rainfall-induced landslide event in the study area. |
| first_indexed | 2024-12-22T21:55:00Z |
| format | Article |
| id | doaj.art-c193a554c9064d4c9acdce7bdbea3f5b |
| institution | Directory Open Access Journal |
| issn | 2197-4284 |
| language | English |
| last_indexed | 2024-12-22T21:55:00Z |
| publishDate | 2018-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Progress in Earth and Planetary Science |
| spelling | doaj.art-c193a554c9064d4c9acdce7bdbea3f5b2022-12-21T18:11:16ZengSpringerOpenProgress in Earth and Planetary Science2197-42842018-03-015111010.1186/s40645-018-0169-6Landslides triggered by an earthquake and heavy rainfalls at Aso volcano, Japan, detected by UAS and SfM-MVS photogrammetryHitoshi Saito0Shoichiro Uchiyama1Yuichi S. Hayakawa2Hiroyuki Obanawa3College of Economics, Kanto Gakuin UniversityNational Research Institute for Earth Science and Disaster ResilienceCenter for Spatial Information Science, The University of TokyoVisionTech Inc.Abstract Unmanned aerial systems (UASs) and structure-from-motion multi-view stereo (SfM-MVS) photogrammetry have attracted a tremendous amount of interest for use in the creation of high-definition topographic data for geoscientific studies. By using these techniques, this study examined the topographic characteristics of coseismic landslides triggered by the 2016 Kumamoto earthquake (Mw 7.1) in the Sensuikyo area (1.0 km2) at Aso volcano, Japan. The study area has frequently experienced rainfall-induced landslide events, such as those in 1990, 2001, and 2012. We obtained orthorectified images and digital surface models (DSMs) with a spatial resolution of 0.06 m before and after the 2016 Kumamoto earthquake. By using these high-definition images and DSMs, we detected a total of 54 coseismic landslides with volumes of 9.1–3994.6 m3. These landslides, many of which initiated near topographic ridges, were typically located on upside hillslopes of previous rainfall-induced landslide scars that formed in 2012. This result suggests that the topographic effect on seismic waves, i.e., amplification of ground acceleration, was important for coseismic landslide initiation in the study area. The average depth of the coseismic landslides was 1.5 m, which is deeper than the depth of the rainfall-induced landslides prior to these. The total sediment production of the coseismic landslides reached 2.5 × 104 m3/km2, which is of the same order as the sediment production triggered by the previous single heavy rainfall event. This result indicates that the effects of the 2016 Kumamoto earthquake in terms of sediment production and topographic changes were similar to those of the rainfall-induced landslide event in the study area.http://link.springer.com/article/10.1186/s40645-018-0169-6Coseismic landslidesRainfall-induced landslides2016 Kumamoto earthquakeUASSfM-MVS photogrammetryAso volcano |
| spellingShingle | Hitoshi Saito Shoichiro Uchiyama Yuichi S. Hayakawa Hiroyuki Obanawa Landslides triggered by an earthquake and heavy rainfalls at Aso volcano, Japan, detected by UAS and SfM-MVS photogrammetry Progress in Earth and Planetary Science Coseismic landslides Rainfall-induced landslides 2016 Kumamoto earthquake UAS SfM-MVS photogrammetry Aso volcano |
| title | Landslides triggered by an earthquake and heavy rainfalls at Aso volcano, Japan, detected by UAS and SfM-MVS photogrammetry |
| title_full | Landslides triggered by an earthquake and heavy rainfalls at Aso volcano, Japan, detected by UAS and SfM-MVS photogrammetry |
| title_fullStr | Landslides triggered by an earthquake and heavy rainfalls at Aso volcano, Japan, detected by UAS and SfM-MVS photogrammetry |
| title_full_unstemmed | Landslides triggered by an earthquake and heavy rainfalls at Aso volcano, Japan, detected by UAS and SfM-MVS photogrammetry |
| title_short | Landslides triggered by an earthquake and heavy rainfalls at Aso volcano, Japan, detected by UAS and SfM-MVS photogrammetry |
| title_sort | landslides triggered by an earthquake and heavy rainfalls at aso volcano japan detected by uas and sfm mvs photogrammetry |
| topic | Coseismic landslides Rainfall-induced landslides 2016 Kumamoto earthquake UAS SfM-MVS photogrammetry Aso volcano |
| url | http://link.springer.com/article/10.1186/s40645-018-0169-6 |
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