Geodetic and hydrogeological investigations of groundwater abstraction from confined aquifers: elastic response, heights, and sea level change

从承压含水层抽取地下水的大地测量和水文地质调查：弹性响应、高度和海平面变化

• 批准号: LP140100155
• 负责人: Prof Dr William Featherstone
• 金额: $ 27.49万
• 依托单位: Curtin 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: 2015-02-09 至 2019-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/LP140100155
• 关键词: Geodetic; hydrogeological; investigations; groundwater; abstraction

Parts of Perth are subsiding by as much as 5 millimetres (mm) per year, thus accelerating sea level rise relative to the land from 3 mm per year to 8 mm per year. The subsidence is most likely due to increased groundwater abstraction. This project aims to extend subsidence mapping in time and space using satellite-borne synthetic aperture radar, calibrated by complementary geodetic techniques, and coupled with new hydrogeological inputs from the Western Australian Department of Water. The research aims to provide science-based information to planners and managers on coastal vulnerability and determine the land response to groundwater abstraction. This will also allow for the correction of sea level change measurements from tide gauges.

珀斯的部分地区正在以每年5毫米的速度下沉，从而加速了海平面相对于陆地的上升，从每年3毫米上升到每年8毫米。地面沉降很可能是由于地下水抽取量增加所致。该项目的目的是利用卫星合成孔径雷达，通过补充大地测量技术进行校准，并结合西澳大利亚水利部提供的新的水文地质资料，在时间和空间上扩大沉降测绘。这项研究的目的是向规划人员和管理人员提供关于沿海脆弱性的科学信息，并确定土地对地下水抽取的反应。这也将允许对验潮仪测量的海平面变化进行校正。