The effect of climate change on the biogeochemistry of estuarine soft soils

气候变化对河口软土生物地球化学的影响

• 批准号: IN150100037
• 负责人: Prof Brett Turner
• 金额: $ 39.32万
• 依托单位: The University of Newcastle
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Indigenous
• 财政年份: 2015
• 资助国家: 澳大利亚
• 起止时间: 2015-02-18 至 2019-06-30
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/IN150100037
• 关键词: effect; climate; change; biogeochemistry; estuarine

The Australian coastline is dotted with soft clays to a significant depth. These soft clay deposits display excessive settlement characteristics, affecting transport infrastructure. Understanding the couplings between the biogeochemical composition of the pore liquid and the mechanical behaviour of soft soils is essential, but current engineering practice is limited. Sea level rise in Australia will potentially place as much as $67 billion in transport infrastructure at risk; consequently, this project aims to examine the impact of climate change on the biogeochemical processes of estuarine sediments in relation to: geotechnical properties; soft soil stability under sea level change; and soil carbon sequestration.

澳大利亚的海岸线上点缀着很深的软粘土。这些软粘土沉积物表现出过度沉降特征，影响了交通基础设施。了解孔隙液体的生物地球化学组成与软土力学行为之间的耦合是必要的，但目前的工程实践是有限的。澳大利亚的海平面上升可能会给交通基础设施带来高达670亿美元的风险；因此，本项目旨在研究气候变化对河口沉积物生物地球化学过程的影响，涉及以下方面：岩土力学特性；海平面变化下软土稳定性研究以及土壤碳固存。