【乗船研究者募集!】Exp. 383 Plio-Pleistocene Dynamics of the Pacific Antarctic Circumpolar Current

航海概要

航海概要

テーマ

Plio-Pleistocene Dynamics of the Pacific Antarctic Circumpolar Current

 

JRSOのページ>>こちら

航海予定期間

2019年5月20日~7月20日(予定)

掘削船

JOIDES Resolution

乗船/下船地

TBD to TBD

掘削地点

南太平洋~亜南極海、チリ辺縁部

科学目的

IODP Expedition 383 will investigate the Pliocene-Pleistocene atmosphere-ocean-cryosphere dynamics of the Pacific Antarctic Circumpolar Current (ACC), and their role in regional and global climate and atmospheric CO2 based on sediment records with the highest possible stratigraphic resolution.

The expedition will test two major scientific hypotheses: (1) ACC dynamics and Drake Passage throughflow conditioned the global Meridional Overturning Circulation and high-low climate linkages on orbital and submillennial time-scales since the Pliocene. (2) Variations in the Pacific ACC determine the physical and biological characteristics of the oceanic carbon pump and atmospheric CO2.

The ACC is the world’s largest current system connecting all three major basins of the global ocean (the Pacific, Atlantic and Indian Oceans) integrating and responding to climate signals throughout the globe. By inducing strong upwelling and formation of new water masses, the ACC also fundamentally affects the global meridional overturning circulation (MOC) and the stability of Antarctica’s ice sheets, and has been recognized as a key mechanism in regulating variations in atmospheric CO2 and global climate.

IODP Expedition 383 will target six primary sites on a transect in the central South Pacific between the modern Polar Front and the Subantarctic Zone, and at the Chilean Margin close to the Drake Passage. Central Pacific sites will document the Plio-Quaternary ACC paleoenvironmental history at water depths ranging from 5100 to 3600 m. At the Chilean Margin the sites provide a depth transect (~1000 – 3900 m) across the major Southern Ocean water masses that will document Plio-Pleistocene changes in the vertical structure of the ACC – a key issue for understanding the role of the Southern Ocean in the global carbon cycle.

The planned drilling strategy is designed for recovering sediment sequences suitable for ultra-high-resolution studies. The proposed sites are located at latitudes and water depths where sediments will allow the application of a wide range of siliciclastic, carbonate, and opal-based proxies for reconstructing surface to deep ocean variations and their relation to atmosphere and cryosphere changes with unprecedented stratigraphic detail.

 

詳細についてはJRSOのページをご参照ください。

 

共同首席研究者

Frank Lamy and TBD

J-DESCからの乗船研究者

募集中 ※詳細は「募集情報」タブを参照

乗船に関わるサポート情報

乗船研究者としてIOから招聘される方には乗船前から乗船後に至る過程の数年間に様々なサポートを行っています。主な項目は以下の通りです。

  1. プレクルーズトレーニング:乗船前の戦略会議やスキルアップトレーニング
  2. 乗船旅費:乗下船に関わる旅費支援
  3. アフタークルーズワーク:モラトリアム期間中の分析
  4. 乗船後研究:下船後最長3年で行う研究の研究費

乗船の手引き(乗船前準備や船上作業・生活方法に関する経験者からのアドバイス集)>>こちら

お問い合わせ

J-DESCサポート
海洋研究開発機構 横浜研究所内
E-mail: infoの後に@j-desc.org
Tel: 045-778-5703

募集情報

募集情報

募集分野

制限なし

応募方法

応募>>こちら
応募用紙の記入方法>>こちら

募集〆切

2018年3月1日(木)

 

 

注意事項

応募する方は全員英文CV、さらに在学中の場合は指導教員の推薦書が必要となります。
修士課程の大学院生の場合は乗船中の指導者(指導教員もしくは代理となる者)が必要です。

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