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Multi-sensor satellite imagery analysis of the growth and collapse of a littoral lava dome during the 2018/19 eruption of Kadovar Volcano, Papua New Guinea

Plank, Simon Manuel and Walter, Thomas R. and Martinis, Sandro and Cesca, Simone (2020) Multi-sensor satellite imagery analysis of the growth and collapse of a littoral lava dome during the 2018/19 eruption of Kadovar Volcano, Papua New Guinea. EGU General Assembly 2020, 4.-8. Mai 2020, Wien, Österreich.

Full text not available from this repository.

Abstract

Growing volcanic islands and lava domes become structurally unstable, associated with sectoral collapses, explosive volcanism and related hazards. We present the rare case of a growing and collapsing lava dome at Kadovar Volcano. This small inhabited volcanic island is part of the Schouten Islands, at the western end of the Bismarck Volcanic Arc, north of Papua New Guinea. The first confirmed historical eruption at Kadovar began on 5 January 2018 and was monitored by synthetic aperture radar (SAR), thermal and optical satellite sensors. Our analysis of the different remote sensing data shows that Kadovar began a new episode of volcanic activity at the central crater and then also at the eastern coast of the island, where we monitored the birth of a new emerging lava dome. We analyse changes occurring on the island and the littoral lava dome and identify that after dome growth, parts of the island and about 80% of the littoral lava dome collapsed eastwardly into the ocean on 9 February 2018. This collapse caused small tsunami waves that hit the neighbouring islands. The littoral lava dome then re-grew at a slower rate and reached a final area of ~40,000 m² by 2 May 2018, which corresponds to an estimated subaerial volume of the lava dome of ~400,000 m³. This study provides details on the rapid growth and collapse of a peripheral lava dome and a destabilization episode in an island and dome sector. The importance of remote sensing data for the monitoring and investigation of remote volcanic islands is demonstrated.

Item URL in elib:https://elib.dlr.de/134864/
Document Type:Conference or Workshop Item (Speech)
Title:Multi-sensor satellite imagery analysis of the growth and collapse of a littoral lava dome during the 2018/19 eruption of Kadovar Volcano, Papua New Guinea
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Plank, Simon ManuelSimon.Plank (at) dlr.dehttps://orcid.org/0000-0002-5793-052X
Walter, Thomas R.GFZUNSPECIFIED
Martinis, Sandrosandro.martinis (at) dlr.dehttps://orcid.org/0000-0002-6400-361X
Cesca, SimoneGFZUNSPECIFIED
Date:5 May 2020
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:lava dome, landslide, flank instability, monitoring, remote sensing
Event Title:EGU General Assembly 2020
Event Location:Wien, Österreich
Event Type:international Conference
Event Dates:4.-8. Mai 2020
Organizer:EGU
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Remote Sensing and Geo Research
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center > Geo Risks and Civil Security
Deposited By: Plank, Simon Manuel
Deposited On:03 Jun 2020 11:13
Last Modified:03 Jun 2020 11:13

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