Assessment for responses of submarine fan development and of its CO_2 storage capacity to rapid climate changes

海底扇发展及其CO_2封存能力对气候快速变化的响应评估

• 批准号: 21540488
• 负责人: NAKAJIMA Takeshi
• 金额: $ 2.75万
• 依托单位: National Institute of Advanced Industrial Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21540488/
• 关键词: 古環境; 気候変動; 環境変動; 層位・古生物学; 自然災害; 海洋資源; 地球温暖化; 海底扇状地; タービダイト; 有機炭素; 西南日本; 中部日本

Analysis of sediment cores from the Toyama Deep-Sea Channel in the Japan Sea and from a submarine fan in the Nanakai Trough revealed that submarine fan development was controlled by climate changes in the time scale of ten to hundred thousands years whereas it was controlled by tectonics in the longer time scale of million years. It was also clarified that submarine fan development was associated with transportation of abundant organic carbon derived from terrestrial plants into sea floors, thereby stored atmospheric CO_2 in the submarine fan. This study clarified the hypothesis that submarine fan development acted as a buffer for global warming if rapid warming took place. Rapid warming would result in increase in precipitation, which in turn, leads to submarine fan development, thereby increase capacity for CO_2 storage.

对日本海富山深海航道和七海海槽海底扇沉积物岩心的分析表明，海底扇的发育受十万至十万年时间尺度气候变化的控制，而受构造运动的控制在百万年的较长时间尺度内。研究还表明，海底扇的发展与将陆地植物中丰富的有机碳输送到海底，从而将大气中的CO_2储存在海底扇中有关。这项研究澄清了这样的假设：如果发生快速变暖，海底扇的发展可以起到缓冲全球变暖的作用。快速变暖会导致降水增加，进而导致海底扇的发展，从而增加CO_2的储存能力。

项目成果

Outer-bank bars : a new internal architecture within sinuous submarine channels

外岸酒吧：蜿蜒海底通道内的新内部架构

• 发表时间: 2011
• 作者: Takeshi Nakajima; Jeff Peakall; William D. McCaffrey; Douglas Paton; Philip J. Thompson
• 通讯作者: Philip J. Thompson

Tectonic and climatic evolution of Southwest Japan inferred from sediment composition and FT ages of Sites C0011 and C0012, Exp.322

根据C0011和C0012地点的沉积物成分和FT年龄推断的日本西南部的构造和气候演化，Exp.322

• 发表时间: 2011
• 作者: 中嶋健・成瀬元・小田啓邦; ほか5名
• 通讯作者: ほか5名

Quantitative analysis of the geometry of submarine levees

海底堤坝几何形状的定量分析

• 发表时间: 2011
• 作者: 中嶋健; Ben Kneller
• 通讯作者: Ben Kneller

ODP第322次研究航海四国海盆掘削試料の堆積物組成分析とFT年代測定結果から推定される西南日本の発達史と気候変動史

根据ODP第322次考察四国盆地钻探样品的沉积物成分分析和FT测年结果推测日本西南部的开发历史和气候变化历史

• 发表时间: 2011
• 作者: 中嶋健;成瀬元;小田啓邦;檀原徹;小布施明子;池原実;斉藤実篤;久保雄介
• 通讯作者: 久保雄介

Climatic control on turbidite deposition during the last 70kyr along the Toyama Deep-Sea Channel, Central Japan Sea.

日本海中部富山深海航道近70kyr期间浊积岩沉积的气候控制.

• 发表时间: 2009
• 作者: Takeshi Nakajima; Hajime Katayama; Takuya Itaki
• 通讯作者: Takuya Itaki