Thermal plume transport, remediation, and utilization in groundwater

我的研究计划的目标是开发新的方法来量化和补救水下聚集体和岩石提取对冷水流的热影响。重点将放在补救方法上，利用充满水的抽水坑产生的含水层热能来加热和冷却当地建筑物和居民区。这样，不仅开采地点附近的冷水生态系统和渔业将得到保护，而且补救系统也将提供可持续的能源。目前，我们即将完成一项史无前例的为期10年的现场评估和数值模拟评估，以量化集合坑通过无限制冰川喷发含水层发出的热羽的持久性。我们的结果表明，冷暖交替的羽流在含水层中持续11个月，向下迁移到250m的坡度，如果没有提供足够的分离距离，即使是2-3摄氏度的温度变化也可能对大型无脊椎动物群落和现有的溪鲑鱼种群产生不利影响。

The objective of my research program is to develop new methods of quantifying and remediating thermal impacts from below-water-table aggregate and rock extraction on cool-water streams. The focus will be on remedial methods that utilize the aquifer thermal energy generated from the water filled extraction pits for heating and cooling local buildings and neighbourhoods. In this way not only will cool-water ecosystems and fisheries be protected adjacent to extraction sites but the remedial systems will provide a sustainable energy source. Currently, we are nearing completion of an unprecedented 10 year field and numerical modelling assessment to quantify the persistence of thermal plumes emanating from an aggregate pit through an unconfined, glacial outwash aquifer. Our results show that alternating warm and cool plumes persist in the aquifer for 11 months, migrate up to 250 m down gradient, and if sufficient separation distances are not provided, temperature changes of even 2 to 3 degrees C in the hyporheic zone may adversely affect the macroinvertebrate community and incumbent brook trout populations.