Exp.376 Brothers Arc Flux 乗船研究者募集!

航海概要

航海概要

テーマ

Brothers Arc Flux

プロポーザル#818-Full2>>こちら(フルバージョン)
Scientific Prospectus>>準備中

航海予定期間

2018年5月5日~2018年7月5日

掘削船

JOIDES Resolution

乗船/下船地

Auckland to Auckland, New Zealand

掘削地点

掘削地点

科学目的

Expedition 376 will investigate the fundamental, interrelated processes governing subseafloor hydrothermal activity at Brothers volcano, southern Kermadec arc (IODP proposal 818-Full2). The primary objectives are to (1) Characterize the subsurface, magma-derived volatile phase for testing models predicting the existence of either a single-phase gas or a two-phase brine-vapor; (2) Explore the distribution of base and precious metals and metalloids at depth as well as the reactions that have taken place during their precipitation along fluid migration pathways to the seafloor; (3) Quantify the mechanisms and extent of fluid-rock interaction, and what this implies for the mass flux of metals and metalloids to the ocean as well as the role of magma-derived carbon and sulfur species in acting as agents for those fluxes; and (4) Assess the diversity, extent, and metabolic pathways of microbial life in an extreme, acidic, and metal-toxic (sub)volcanic environment.

The ultimate scientific goal of Expedition 376 is to discover the key processes that distinguish submarine arc-hosted hydrothermal systems from those linked to spreading centers, which results from the flux of magmatic fluid commonly being much higher in volcanic arcs. As a consequence of their shallow water depths and high volatile contents, the magmatic-hydrothermal arc signature gives rise to different fluid compositions and thus mineralization compared to submarine extensional settings. This likely also has consequences for the associated biota. Additionally, given the very acidic fluids and high metal concentrations, submarine arc hydrothermal systems are thought to be important analogs to porphyry copper, epithermal gold, and various volcanic rock-hosted massive sulfide deposits mined on land. Drilling Brothers volcano will provide essential information for understanding the formation of those mineral deposits and will also reconstruct the volcanic stratigraphy of this arc volcano.

Operations will focus on discharge zones of geochemically distinct fluids in and around the caldera of Brothers volcano by drilling and logging to 100s of m. The drill sites show variable impact of magmatic volatiles, which will enable the expedition to directly study the implications of magma degassing for the transport of metals to the seafloor and how this affects the functioning of microbial life.

JRSOのページ>>こちら

共同首席研究者

Cornel de Ronde and Susan Humphris

J-DESCからの乗船研究者

募集中

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
  • Sedimentologists
  • Petrologists (igneous/metamorphic/sulfide)
  • Structural geologists
  • Paleomagnetists
  • Petrophysicists
  • Borehole geophysicists
  • Microbiologists
  • Inorganic/organic geochemists

応募>>こちら

応募用紙の記入方法>>こちら

募集〆切

2017年4月1日(土)

Information Webinar

To learn more about the scientific objectives of this expedition and the technical plans, please join a web-based seminar on Wednesday, 15 March 2017 at 1:00 pm EDT (日本時間:3月16日 午前2時 ).
To participate in the webinar, you need access to the Internet and a computer with a speaker and microphone (optional). To register, click the following link: Exp 376 webinar.

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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