Diagenetic dynamics and signals within Earthquake-mobilised sediments (Japan Trench, IODP Expedition 386)

地震引发的沉积物内的成岩动力学和信号（日本海沟，IODP Expedition 386）

• 批准号: NE/W007231/1
• 负责人: Robert Newton
• 金额: $ 2.57万
• 依托单位: University of Leeds
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FW007231%2F1
• 关键词: Diagenetic; dynamics; signals; within; Earthquake

Seafloor deposits on the slope offshore Japan can become remobilised by large Earthquakes, and can then end up in the deep trench that is the ultimate site of deposition. Therefore, studying the chemical composition of these Earthquake-related mud layers can eventually help to reconstruct the past dynamics and ferocity of Earthquakes in Japan over the last tens of thousands of years. In addition, these trench sediments are highly efficient at burying carbon away from the atmosphere, and can therefore contribute significantly to storing CO2 fixed as biomass for vert long time periods, helping to balance the continuous addition of this greenhouse gas to the atmosphere by human activity.

日本近海斜坡上的海底沉积物可能会因大地震而重新活动，然后最终进入深槽，这是沉积的最终地点。因此，研究这些与地震有关的泥层的化学成分最终可以帮助重建日本过去数万年来地震的动力学和凶猛程度。此外，这些海沟沉积物在将碳从大气中掩埋出去方面效率很高，因此可以在很长一段时间内将固定为生物质的二氧化碳储存起来，有助于平衡人类活动向大气中不断增加的温室气体。