On November 29th, CoSV hosted the webinar entitled “Assessment of the Physical Properties of the Umbrella Clouds associated with Submarine Eruptions”. This webinar was presented by Dr. Ashok Kumar Gupta, of UCLA and Vanderbilt University, USA. We continue on our last discussion on the 2021 Fukutoku-Oka-no-Ba eruption, but this time from the remote sensing perspective, and expand this into the 2022 Hunga Tonga-Hunga Ha’apai eruption.
To watch the webinar recording, click this link.
Abstract:
In this seminar, I will talk about the spatial and temporal distribution of umbrella clouds, their compositions, and the longevity associated with two prominent submarine explosive eruptions, Fukutoku-Oka-no-Ba (Fauria et. al., 2022) and Hunga-Tonga Hunga Ha’apai (Gupta et. al., 2022) eruptions during 2021-2022. I will present how the image segmentation and histogram technique can better extract volcanic clouds and exclude non-volcanic clouds near the eruption site. The extracted umbrella clouds and associated umbrella top brightness temperature are then used to ascertain the umbrella top height using the real-time temperature profile after ensuring that the umbrella is optically thick and in thermal equilibrium with the environment. Moreover, the dominant composition of the umbrella clouds is also obtained using multi-channel geostationary satellite observations.
On December 7th, 2023, 09:00 UTC, CoSV hosted the webinar entitled “Flank instability and collapse at marine volcanoes”. This webinar will be presented by Dr. Morelia Urlaub from the PRE-COLLAPSE group, Junior Professor for Marine Geomechanics, GEOMAR Helmholtz Centre for…
On February 1st, 2024, 16:00 UTC, CoSV hosted the webinar entitled “IODP Expedition 398 Hellenic Arc Volcanic Field – one year after the drilling”. This webinar operated as a series of mini-talks presented by members of the IODP Exp. 398…
Welcome to Commission on Submarine Volcanism.
We have managed to arrange with the “Cities on Volcanoes 11” organisers to allow a special late abstract submission for any science regarding the 2021-2022 Hunga Tonga-Hunga Ha’apai eruption. The presentations will only be e-posters, and abstract submissions will be due…
On June 23rd at 16:00 UTC CoSV hosted its first webinar entitled “Physical-chemical perturbations and biological response over the two most recent eruptions registered in the Canary Islands: Tagoro submarine volcano (El Hierro) and Cumbre Vieja (La Palma)”. This webinar…
Registration and abstract submissions for IAVCEI’s 2023 scientific assembly in Rotorua have opened. For more details see the IAVCEI 2023 website: https://confer.eventsair.com/iavcei2023/ The deadline for abstract submissions is 2nd September 2022. There are several symposia dedicated specifically to subaqueous volcanism….
The IAVCEI Commission on Submarine Volcanism would like to invite its members to participate My deep-sea volcano. This project aims to bring submarine volcanoes into the public image and engage people across any age in thinking about this often alien…
On July 20th, 23:00 UTC CoSV hosted its second webinar entitled “A decade of multidisciplinary research on submarine volcanism at Havre Volcano, Kermadec Arc: New perspectives and where to from here?”. This webinar will mini presentations by Dr. Rebecca Carey…
On August 25th, 13:00 UTC, CoSV hosted the webinar entitled “Virtual Fieldwork on the Seafloor with the help of Robotics and 3D Visualization”. This webinar will be presented by Dr. Tom Kwasnitschka, Head of Seafloor Visualization Group, Technology and Logistics…
On November 2nd, CoSV hosted the webinar entitled “August 2021 eruption of the Fukutoku Oka-na-Ba volcano, Izu-Bonin Arc: Latest results from the rapid response seafloor surveys”. This webinar was presented by Dr. Kenichiro Tani, of the Department of Geology at…
