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.

对日本海富山深海水道和七海海槽海底扇的沉积岩芯分析表明，海底扇的发育在1 ~ 10万年的时间尺度上受气候变化的控制，而在更长的100万年的时间尺度上受构造运动的控制。海底扇的形成与大量的陆生植物有机碳向海底的输送有关，从而将大气CO_2储存在海底扇中。这项研究澄清了假设，海底扇的发展作为一个缓冲全球变暖，如果快速变暖发生。快速升温导致降水量增加，进而导致海底扇发育，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

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
• 期刊: SEPM Special Publication No.92
• 作者: Takeshi Nakajima;Hajime Katayama;Takuya Itaki
• 通讯作者: Takuya Itaki

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

从 C0011 和 C0012 地点的沉积物成分和 FT 年龄推断日本西南部的构造和气候演化

• 发表时间: 2011
• 作者: Takeshi Nakajima;Hajime Naruse;Hirokuni Oda;Tohru Danhara;Akiko Obuse;Minoru Ikehara;Saneatsu Saito;Yusuke Kubo
• 通讯作者: Yusuke Kubo

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