Exp. 396 Mid-Norwegian Continental Margin Magmatism乗船者募集

航海概要

航海概要

テーマ

Mid-Norwegian Continental Margin Magmatism

  • Proposal: #944-Full2, #944-Add2
  • Scientific Prospectus

JRSOのページ>>こちら

航海予定期間

2021年8月6日~10月6日(予定)

掘削船

JOIDES Resolution

乗船/下船地

Reykjavik, Iceland to Kristiansand, Norway

掘削地点

the Mid-Norwegian margin

科学目的

本航海は、北東大西洋大陸分裂時の過剰なマグマ活動の特性、
原因、気候への影響を理解しようとするJOIDES Resolution の航海です。
この航海では、5つの主要目的に取り組みます。
(1) マントルの溶融条件
(2) 火山フラックス時空間変動
(3) 溶岩流の堆積環境
(4) 大規模火山活動と気候変動イベントとの関連
(5) 北大西洋の最初の開口部におけるプロセスの解明

下記、英文全文:Mid-Norwegian Continental Margin Magmatism Expedition 396 is a scientific ocean drilling project that seeks to understand the nature, cause and climate implications of excess magmatism during the northeast Atlantic continental breakup. Competing geodynamic end-member hypotheses exist for the formation of this excess magmatism, but their relative importance remains unresolved: (1) elevated mantle potential temperatures associated with mantle plume processes, (2) enhanced material flux through the melt window during rifting caused by small-scale convection at the base of the lithosphere, and (3) mantle source heterogeneity that may contribute to anomalously high melt production during continental breakup. Voluminous magmatism also coincides with the global greenhouse climate in the early Paleogene and has been proposed as a driver of both short-term (Paleocene-Eocene Thermal Maximum) and long-term (early Eocene Climate Optimum) global warming. However, the timing of the magmatism is not sufficiently constrained. Improved constraints on melting conditions, timing of magmatism, magmatic fluxes in time and space, eruption environment, sedimentary proxy data, and relative timing of climate events are required to resolve these linked controversies. Expedition 396 is based on IODP Proposals 944-Full2 and 944-Add2 and will target volcanic and sedimentary sequences at nine primary sites along and across the mid-Norwegian margin.

This expedition will address five primary objectives: (1) determine the conditions of mantle melting; (2) determine spatial and temporal variations in along axis volcanic fluxes to test predictions made by fundamentally different geodynamic models for volcanic rifted margin formation including segmentation; (3) determine variations in the depositional environment (sub-aerial vs sub-marine) of inner and outer lava flows to test correlations between magma genesis and dynamic thermal support during late syn-rift, break-up, and early post-rift oceanic spreading; (4) assess the temporal evolution of the styles of volcanic and magmatic activity in relation to paleoclimate proxies to test the relationship between large-scale volcanism and climate change events; and (5) investigate the relative importance of environmental consequences of two key processes during the initial opening of the North Atlantic: direct volcanic degassing and explosive thermogenic gas release through hydrothermal vent complexes that expel fluids derived from contact metamorphism. The expedition will also address two important secondary objectives: (1) early Eocene hot-house and fresh water incursions into the Atlantic, and (2) carbon capture and storage in basalt provinces.

下記にCOVID-19に関する対応事項がございます:

COVID-19 PROTOCOL: The JRSO has created a protocol to safely operate during the COVID-19 pandemic. If pandemic conditions have not improved by mid-2021, the expedition may need to sail with a reduced shipboard contingent. However, all participants will maintain their designation as science party members regardless of whether they sail or not, and will have equal access to all expedition data and core materials. The protocol is available here: http://iodp.tamu.edu/scienceops/JR_COVID-Mitigation-Protocols-2020-07-02.pdf.

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

TBD

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

WHO SHOULD APPLY: We encourage applications from all qualified scientists. The JOIDES Resolution Science Operator (JRSO) is committed to a policy of broad participation and inclusion, and to providing a safe, productive, and welcoming environment for all program participants. Opportunities exist for researchers (including graduate students) in most shipboard specialties, including but not limited to sedimentologists, volcanologists, petrologists, igneous geochemists, inorganic and organic geochemists, micropaleontologists, paleomagnetists, physical properties specialists, and borehole geophysicists. Good working knowledge of the English language is required.

応募方法

応募フォーム>>下記よりご記入ください

募集〆切

2020年10月11日(日)

募集の詳細

募集の詳細については、JRSOのページもご参照ください。

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 横須賀本部内

カテゴリー: IODP Expedition パーマリンク

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