Expedition 344 Costa Rica Seismogenesis Project 2
- 航海概要
- 乗船募集（終了しました）
- Science Plan
テーマ
Costa Rica Seismogenesis Project 2 (CRISP 2)
プロポーザル#537-Full＞＞こちら（フルバージョンPDF）
プロポーザル#537-Add＞＞こちら（Addendum PDF）
IODP Expedition 334＞＞こちら（関連するIODP航海：USIOページ）
Exp. 334船上レポート＞＞こちら
航海期間
2012年10月22日〜12月17日
掘削船
JOIDES Resolution（USIO）
掘削エリア
科学目的の概要
Based on Expedition 334 and Proposals 537A-Full5 and 537A-Add, this expedition aims to understand the processes that control nucleation and seismic rupture of large earthquakes at erosional subduction zones. Scientific objectives include (1) the characterization of the lithology, texture, and physical properties of the subducting sediments and basement; (2) the rate of subduction erosion and subsidence history of the upper plate; (3) the fluid/rock interactions and geochemical processes active within the upper plate; and (4) the evolution of the stress field upslope.
USIOのページ＞こちら
共同首席研究者
Robert Harris、坂口有人（海洋研究開発機構）
乗船研究者
TBD
お問い合わせ
J-DESCサポート
海洋研究開発機構 地球深部探査センター内
E-mail: infoの後に@j-desc.org
Tel: 045-778-5271
募集内容
募集分野
制限なし
募集〆切
2011年12月15日（木）
2012年1月31日（火）
適任者の応募があり次第
〆切ました
応募する＞＞こちら
その他
応募方法＞＞こちら
乗船旅費について＞＞こちら（乗船が決まった方は様式に記入の上お送りください）
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
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。
乗船に関わるサポートについて
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。
- 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
- 乗船旅費：乗下船に関わる旅費支援
- アフタークルーズワーク：モラトリアム期間中の分析
- 乗船後研究：下船後最長3年で行う研究の研究費
Proposed Science Plan for Costa Rica Seismogenesis Project 2 (CRISP) Expedition 344
Expedition 344 is a continuation of Expedition 334 and is part of a larger project designed to understand the processes that control nucleation and seismic rupture of large earthquakes at erosional subduction zones. Scientific objectives include (1) the characterization of the lithology, texture, and physical properties of the subducting sediments and basement; (2) the rate of subduction erosion and subsidence history of the upper plate; (3) the fluid/rock interactions and geochemical processes active within the upper plate; and (4) the evolution of the stress field upslope.
PREVIOUS SCIENTIFIC DRILLING DURING CRISP EXPEDITION 334 (MARCH-APRIL 2011)
Drilling at upper slope Site U1379 penetrated what appeared to be the sediment/basement interface at the depth predicted by site survey seismic data and cored 80 m into basement, which comprises a breccia of basalt and chert pieces embedded in a sandstone and siltstone matrix. At mid-slope Sites U1378 and U1380 poor hole stability made it impossible to reach basement. Finally, coring at Site U1381 was intended to characterize the physical, geochemical, thermal, and stress state of the Cocos Ridge igneous crust and overlying sediments before they enter the Middle America Trench.
Results of this previous CRISP Expedition can be found in the Preliminary Report at the following link:
Expedition 334 Preliminary Report: publications.iodp.org/preliminary_report/334/
Expedition 344 page: iodp.tamu.edu/scienceops/expeditions/costa_rica_seismogenesis.html
PLANNED SCIENTIFIC DRILLING DURING CRISP 2 EXPEDITION 344:
Coring and logging are planned for four sites
Slope Sites U1378 and U1379: During Expedition 344, the scientific objectives at Site U1378 are to obtain a complete subsidence history and penetrate into basement. Operations will include installation of a reentrySchedule system, followed by RCB coring to a depth of 900 meters below seafloor (mbsf), and downhole logging. The scientific objective at Site U1379 is to penetrate deeper into basement. Operations will include drilling without recovery through the previously cored interval (~900 mbsf) and RCB coring to a depth of 1050 mbsf.
Toe Site CRIS-9A: The scientific objectives at margin toe site CRIS-9A are to characterize the material entering the subduction zone from the trench and frontal prism and penetrate the decollement surface between the Cocos and South American plates. Hole A will be APC/XCB cored to 500 mbsf, whereas Hole B will be drilled without recovery to 490 mbsf, RCB cored to 980 mbsf, and logged.
Reference Site U1381: The scientific objective at Site U1381 is to further characterize the sediments overlying the Cocos Ridge igneous crust by APC coring 100 m to the sediment/basement interface.
The original proposals are available at the following links
Proposal 537A-Add: http://iodp.tamu.edu/scienceops/precruise/costarica/537A-Add.pdf
Proposal 537A-Full5: http://iodp.tamu.edu/scienceops/precruise/costarica/537A-Full5_Vannucchi.pdf