Exp. 396 Mid-Norwegian Continental Margin Magmatism

航海概要

航海概要

テーマ

Mid-Norwegian Continental Margin Magmatism

JRSOのページ>>こちら

航海期間

2021年8月6日~10月6日

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

Christian Berndt and Sverre Planke

J-DESCからの乗船研究者
氏名 所属 役職 乗船中の役割
Chatterjee, Sayantani
(乗船)
新潟大学理学部 特任助教 無機地球化学
中岡 礼奈 神戸大学海洋底探査センター 助教 物理特性計測

 

航海の詳細については,下記のJRSOのページもご覧ください.

JRSOのページ>>こちら

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

追加募集情報

募集分野

募集対象は,下記の研究専門分野(大学院生を含む)です.
Expertise sought: This call seeks researchers (including graduate students) with the following research specialisms:
(1) two Palynologists, and (2) one Physical Properties Specialist/Volcanic Stratigraphic Integrator with documented experience in integrating volcanic core description, core physical properties, and wireline logging image interpretation to build a complete volcanostratigraphy.

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.

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。

募集〆切

2020年12月25日(金)==> 2020年1月4日(月)正午 追加募集締め切りました。

2020年10月11日(日)==> 2020年10月23日(金)==> 2020年11月3日(火)

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。

応募方法

応募フォーム>>下記よりご記入ください

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。

お知らせ

Exp. 396 Mid-Norwegian Continental Margin Magmatism 航海が、8月6日よりスタートいたします。日本からも本航海へ参加しています。下記のようにプレスリリースされましたのでお知らせいたします。

IODP Expedition 396 press release (Japanese):
http://www.jamstec.go.jp/j/about/press_release/20210802/
IODP Expedition 396 press release (English):
http://www.jamstec.go.jp/e/about/press_release/20210802/

船上レポート

最終更新日:2021年10月22日
※日付は日本時間

Exploring the Norwegian Sea: 60 days of my life as a sailing geochemist

21 Oct. 2021
Sayantani Chatterjee (Niigata University)

I feel extremely honored and grateful to be one of the sailing scientists of the IODP expedition 396: Mid-Norwegian Continental Margin Magmatism, especially considering this is the first post-covid expedition with a partial shipboard science party. Incidentally this is my first-time participation in an IODP expedition as well as in the JOIDES Resolution research vessel. This unique expedition gives us the opportunity to study the key processes responsible for the enormous amount of volcanism during the opening of North Atlantic and how it was related to Paleocene-Eocene Thermal maximum or the PETM.
The expedition was started with 7 days quarantine in a hotel in Reykjavik, followed by 2 covid tests. We were fortunate enough that we made it through all the covid protocol and finally stated the real job in JR. Finally, we retrieved a significant amount of Paleocene – Eocene sediments and underlying basalts to test our hypothesis. As an inorganic geochemist my responsibilities were to the first-hand collecting samples, analyses the chemistry of the sediments and the hard rock samples; and interpret the data. We discussed our results and forthcoming strategies during regular onboard discussion with shipboard science party and execute our jobs (like core description, physical properties measurement, geochemistry, paleomagnetism etc.) accordingly. In spite of being limited in number we all are trying our best to accomplish the target with the great support from the onshore scientists. With a partial science party and technician, our job was extremely challenging. But, with a great weather condition and an awesome group of scientists I can say all of our members are equally motivated to make this expedition a great success.
Besides that, sometimes we enjoyed the company of a pod of pilot whales in the arctic and glance of the Northern lights, the Aurora borealis. I also got great responses for the Education and Outreach program from Ajikata Junior High School, Niigata, Japan, and GCDC College Manbazar, West Bengal, India and other students from universities in India. Needless to say that this expedition is the most amazing opportunity that has come my way. On top of that, I wish to convey my sincere gratitude to J-DESC for supporting me, from my Visa application to arranging all my transportation and checking on me from time to time. It would not be possible for me to participate in this expedition without their help and support.

Peeping through the drill core to uncover the geological mystery (photo courtesy IODP)

Discussion time with bigboss (cochief of IODP 396 Christian Berndt; photo courtesy IODP)

When you love your job (prepping samples for geochemical analysis, photo courtesy IODP)

Sunset over the Norwegian sea, feeling surreal with Patrick the Safety Penguin (the JR mascot)

Lonely in the sea? no problem we are here! (Pilot whales often visited us; photo courtesy Reed Scherer)

My name in reality; Sayantani means “twilight” in Bengali

Is it a reality or a cosmic fairy tale?
(Aurora borealis from JR deck)

Sharing our sealife with Japanese school students (education outreach program organized from JR with Ajikata Junior High School, Niigata; photo courtesy Emily Choong)

Celebrating the winning moment (logo designed by Morgan Jones and me won the JR onboard logo competition, photo courtesy IODP)

Unforgettable 9 weeks of my life with an extraordinary group of scientists (Group photo of IODP 396 science party, photo courtesy IODP)

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, IODP Expedition パーマリンク

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