3:00 PM - 3:15 PM
[STT39-12] ALOS-2 / PALSAR-2 Interferometric Analysis for Fukutoku-Okanoba 2021 New Island
Keywords:Synthetic Aperture Radar, Interferometry, Fukutoku-Okanoba
Fukutoku-Okanoba is an active submarine volcano in Japan which erupted on August 13, 2021. The eruption left an island made of volcanic tuff cone. The height of the island was approximately 30m [1]. The tuff cone has vanished by mid-November [2] and the remaining. After the appearance of the new island, Advanced Land Observation Satellite-2 (ALOS-2) operated by Japan Aerospace Exploration agency observed the volcano frequently and recorded the vanishment of the island.
We investigated these synthetic aperture (SAR) imageries with interferometric analysis (InSAR) and found the tuff cone was so stable that it showed high interferometric coherence while the resediments don’t. Further investigations will be performed for the stability assessment and collapse speed of the new island.
References
[1] C. Simurda et al., “ICESat-2 Applications for Investigating Emerging Volcanoes.” Geosciences 2022, 12, 40. https://doi.org/10.3390/geosciences12010040
[2] Hydrographic and Oceanographic Department, Japan Coast Guard (Feb. 3, 2022 accessed) https://www1.kaiho.mlit.go.jp/GIJUTSUKOKUSAI/kaiikiDB/kaiyo24-2.htm
We investigated these synthetic aperture (SAR) imageries with interferometric analysis (InSAR) and found the tuff cone was so stable that it showed high interferometric coherence while the resediments don’t. Further investigations will be performed for the stability assessment and collapse speed of the new island.
References
[1] C. Simurda et al., “ICESat-2 Applications for Investigating Emerging Volcanoes.” Geosciences 2022, 12, 40. https://doi.org/10.3390/geosciences12010040
[2] Hydrographic and Oceanographic Department, Japan Coast Guard (Feb. 3, 2022 accessed) https://www1.kaiho.mlit.go.jp/GIJUTSUKOKUSAI/kaiikiDB/kaiyo24-2.htm