Historic Hydrovolcanism at Deception Island (Antarctica): Eruptive Dynamics and Hazards Implications
POSVOLDEC (CTM2016-79617-P) (AEI/FEDER-UE) Historic hydrovolcanism at Deception Island (Antarctica): eruptive dynamics and hazards implications Dario Pedrazzi1, Károly Németh2, Adelina Geyer1, Antonio Álvarez-Valero3, Gerardo Aguirre-Díaz4, Stefania Bartolini1 1Group of Volcanology, Institute of Earth Sciences Jaume Almera-CSIC, Barcelona, Spain 2Volcanic Risk Solutions, CS-INR, Massey University, Palmerston North, New Zealand 3Departamento de Geología, Universidad de Salamanca Salamanca, Spain 4Centro de Geociencias, Universidad Nacional Autónoma de México, Campus Juriquilla, Querétaro, Mexico Main EGU2018-8215 | PICO | GMPV4.8/CL1.34 Presentation 2-minute madness POSVOLDEC (CTM2016-79617-P) (AEI/FEDER-UE) Where? • Deception Island (Antarctica) POSVOLDEC (CTM2016-79617-P) (AEI/FEDER-UE) • Understanding the dynamics of magma-water interaction at Objective Deception Island • Characterising the most likely eruptive scenarios in the future • Detailed revision (field, petrology and geochemistry) of the historical How? hydrovolcanic post-caldera eruptions of Deception Island • Crimson Hill eruption (1825-1829) • Kroner Lake eruption (1829 -1912) • 1967, 1969 and 1970 eruptions POSVOLDEC (CTM2016-79617-P) (AEI/FEDER-UE) Smellie et al. 2002 Pendulum Cove W E POSVOLDEC (CTM2016-79617-P) (AEI/FEDER-UE) • Hydrovolcanic activity from maars and tuff cones is the cause of major direct volcanic hazards. • These include ashfall and ballistics (1967, 1970, Kroner Lake) and PDCs (Crimson Hill). • A major concern at DI as a consequence of hydrovolcanic
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