[M-IS03] The Southern Ocean and the Antarctic Ice Sheet dynamics in past, present and future

[MIS03-01] 新学術領域研究「熱ー水ー物質の巨大リザーバ：全球環境変動を駆動する南大洋・南極氷床」主要成果紹介

★招待講演

*川村 賢二^1,2,3、新学術領域研究「南極の海と氷床」 - (1.情報・システム研究機構　国立極地研究所、2.総合研究大学院大学、3.海洋研究開発機構)

キーワード：南大洋、氷床、南極、全球変動

The Antarctic continent is covered and surrounded by strongly interacting components - cryosphere, ocean, atmosphere, and biosphere, and their changes strongly affect the global environment. To better understand the past, present and potential future of the Antarctic and to establish the framework for studying the complex Antarctic environmental system, we have observed the Antarctic ice sheet, solid earth and Southern Ocean (in-situ and satellite), analyzed the samples such as ice cores, sediments and biological samples, and modeled the climate, ice sheet, ocean-ice interactions, and carbon cycle from local to global scales. We have conducted the research activities over the past five years, under the KAKENHI project "Giant reservoirs of heat/water/material: Global environmental changes driven by the Southern Ocean and the Antarctic Ice Sheet", consisting of 7 research units (Southern Ocean, paleoceanography, biology, ice sheet, solid earth, unmanned observation, and numerical modeling). The project utilized the strong observational platforms provided by the Japanese Antarctic Research Expedition, newly established international fieldwork participation, and strong collaborations between the scientists working on the various fields of observation, engineering, sample analyses, data analyses and modelings on various components and scales.

In this presentation, we will review the objectives and main published outcomes of the project, including those on ongoing ocean-ice interactions, recent changes in the ice sheet, solid earth and bottom water, snow accumulation changes over East Antarctica, biological processes, long-term (past glacial-interglacial) climate and carbon cycle changes, and projection of the ice sheet changes.