9:00 AM - 9:15 AM
[SCG56-25] Observational plans of the South Sandwich Arc by R/V Hakuho Maru: Toward understanding formation and evolution of the world southernmost arc-trench system
On 2019 December-2020 January, R/V Hakuho Maru will visit the South Sandwich Arc and Weddell Sea as a part of around the world cruise for her 30th anniversary. During this cruise, we plan to take 1) dredge samples of forearc high of South Sandwich Arc possibly recording initiation process of oceanic island arc, as well as 2) sediment cores in South Sandwich Trench as an input to a subduction zone in polar region. By comparing the findings during this cruise to accumulated knowledge on backarc-arc-trench system around Japan, we try to understand the formation and evolution of the world southernmost arc-trench system.