【追加募集!】Exp. 385 Guaymas Basin Tectonics and Biosphere

航海概要

航海概要

テーマ

Guaymas Basin Tectonics and Biosphere

 

JRSOのページ>>こちら

航海予定期間

2019年9月19日~11月19日(予定)

掘削船

JOIDES Resolution

乗船/下船地

San Diego to San Diego, California

掘削地点

カリフォルニア湾グアイマス海盆

科学目的

IODP Expedition 385 will core and log a series of sites in the Guaymas Basin to investigate the relationship of tectonics, magmatism, sedimentation, carbon cycling, and microbial activity. The Guaymas Basin in the Gulf of California is a young, marginal rift basin characterized by active seafloor spreading and rapid deposition of organic-rich sediments from highly productive overlying waters. The active formation of oceanic crust combined with a thick sedimentary overburden has given rise to a dynamic environment, where strongly connected physical, chemical, and biological processes govern the cycling of sedimentary carbon. Its fate upon deposition depends on the relative efficiencies of interrelating microbial and chemical processes, leading either to sequestration or release of carbon. Expedition 385 aims to illuminate the interaction between these processes and its ultimate consequences for carbon cycling, which will help understand similar settings in marginal seas throughout the world.

Drilling toward and through seismically imaged sills of varying age and temperature into the intercalated sill-sediment package will provide core and log data to constrain the links between sediment accumulation, sill emplacement, sediment alteration, fluid expulsion, as well as microbial utilization and sequestration of carbon along subseafloor fluid pathways. The primary objectives are to
(1) Explore the physical and chemical gradients along active and extinct fluid pathways associated with sill emplacement;
(2) Investigate subsurface microbial communities that are sustained by alteration products, in order to determine how efficiently they capture carbon-bearing alteration products; and
(3) Advance our understanding of the conditions that limit life in the deep biosphere.

Coring sill-sediment successions will provide an integrated record of igneous accretion as well as baseline data of carbon flux, including unaltered subsurface sediments and those that have experienced multiple generations of sill intrusion at depth. Petrophysical data (e.g., porosity/permeability) will also constrain crustal fluid flow and heat exchange that exert fundamental controls on this system. All findings will deepen our understanding of mechanisms of carbon remobilization implicated in global-scale rapid climate change.

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

Andreas Teske and Daniel Lizarralde

J-DESCからの乗船研究者

追加募集中(詳細は「募集情報」へ)

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

募集情報

募集情報

募集分野

制限なし
追加募集分野:Paleontologists

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4月15日(日)
2018年5月31日(木) ※延長しました
2018年9月25日(火) ※追加募集の〆切

 

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。

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

Tel: 045-778-5703

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