Land cover and topographic controls on groundwater recharge on the Oak Ridges Moraine

土地利用和气候变化对水文过程和水资源具有重大影响。我将研究这些变化如何影响安大略省南部环境敏感的橡树岭冰碛的地下水补给和水流-这是一个重要的区域水文地质资源。冰碛正在经历土地利用和气候变化，其水文影响尚不清楚。部分原因是由于流域储存和释放水到溪流的能力不确定。冰碛上相邻的溪流排放的地下水量差异很大，不知道这是由于补给、地下储存和释放特性的差异，还是两者兼而有之。这种可变性还表明，水在以溪流形式离开之前在盆地中停留的时间存在差异。在预测地表水文变化（由于土地利用和/或气候变化）是否以及何时可能引起径流响应时，水停留时间的数据至关重要。

Land use and climate changes have major implications for hydrologic processes and water resources. I will study how such changes impact groundwater recharge and streamflow on the environmentally-sensitive Oak Ridges Moraine in southern Ontario - a key regional hydrogeologic resource. The Moraine is undergoing both land use and climate change, the hydrologic implications of which are unclear. This is partly due to uncertainty in the ability of drainage basins to store and release water to streams. Adjacent streams on the Moraine discharge greatly different amounts of groundwater, and it is not known whether this results from differences in recharge, subsurface storage and release properties, or both. This variability also suggests differences in residence time of water in the basin before it leaves as streamflow. Data on water residence times is critical when predicting if and when surface hydrologic changes (due to land use and/or climate change) may induce a streamflow response.