Dynamics and management of riverine freshwater lenses

河流淡水透镜体的动力学和管理

• 批准号: LP140100317
• 负责人: Prof Adrian Werner
• 金额: $ 20.73万
• 依托单位: Flinders University
• 依托单位国家: 澳大利亚
• 项目类别: Linkage Projects
• 财政年份: 2015
• 资助国家: 澳大利亚
• 起止时间: 2015-05-01 至 2019-07-05
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/LP140100317
• 关键词: Dynamics; management; riverine; freshwater; lenses

Rivers are the main source of freshwater for many ecosystems in semi-arid zones. River water may seep into the floodplain aquifer, providing an accessible store of low-salinity water within freshwater lenses. The project aims to investigate lens dynamics using numerical groundwater models supported by extensive field data from the lower River Murray, where freshwater lenses are declining. The project aims to model lens extent, growth and decline in response to natural variations in climate and to changes in land use, river regulation and groundwater pumping. Project results intend to evaluate management options to promote freshwater lenses, with the aim of improving river salinity and floodplain vegetation health.

河流是半干旱地区许多生态系统的淡水的主要来源。河水可能会渗入洪泛区含水层，为淡水透镜中的低含量水提供可进入的低含水。该项目旨在使用来自下河默里（Murray）的广泛田间数据支持的数值地下水模型来研究镜头动力学，那里的淡水镜头正在下降。该项目旨在模拟镜头的程度，增长和下降，以应对气候自然变化以及土地使用，河流调节和地下水抽水的变化。项目结果旨在评估管理方案以促进淡水镜头，以改善河流盐度和洪泛区植被健康。