Replication Data for: Variable flow directions measured at discrete depths in a bedrock aquifer using multi-borehole Active Distributed Temperature Sensing

Data collected at the Fractured Rock Observatory on the University of Guelph Campus in Guelph, Ontario, Canada. Temperature data is from boreholes GDC-06, GDC-07, GDC-08, and GDC-09 sealed with a flexible and impermeable liner during two Active-Distributed Temperature Sensing (A-DTS) tests. The first test (Sealed) was collected with all boreholes on the site sealed with liners to restore natural gradient conditions. The second test was collected when an open borehole in the centre of the borehole cluster, GDC-05, was pumped at a constant rate of 54 L/min. All A-DTS tests included 30 minutes of background temperature before heating, which was subtracted from the dataset at each depth to show temperature differences above ambient. The composite fibre optic cable was heated for a 10 h period with a power output of 7.12 W/m. The DTS used to measure the temperature was a Silixa ULTIMA S (1.8 km model). The hydraulic gradient data were calculated form head profiles collected in three boreholes around the periphery of the borehole cluster: GDC-04, GDC-10, and GDC-12. These data were collected using a string of RBRsoloD and RBRduetT.D. transducers, sealed in place with a flexible impermeable liner.

本数据集采集于加拿大安大略省圭尔夫市圭尔夫大学校园内的裂隙岩石观测站（Fractured Rock Observatory）。温度数据来自钻孔GDC-06、GDC-07、GDC-08及GDC-09，这四个钻孔在两次主动分布式温度传感（Active-Distributed Temperature Sensing，A-DTS）测试期间采用柔性防渗衬层进行了密封。首次测试为密封工况测试：场地内所有钻孔均通过衬层密封，以恢复天然温度梯度条件。第二次测试则是在钻孔集群中心的敞口钻孔GDC-05以54 L/min的恒定速率抽水时采集的数据。所有A-DTS测试均在加热前设置了30分钟的本底温度采集时段，该时段的温度数据会从各深度的数据集内扣除，以展示相对于环境本底的温度差值。复合光纤电缆以7.12 W/m的输出功率持续加热10小时。用于测量温度的仪器为Silixa ULTIMA S型（1.8千米型号）。水力梯度数据通过采集自钻孔集群周边三个钻孔的水头剖面计算得到，这三个钻孔分别为GDC-04、GDC-10及GDC-12。该系列数据采用RBRsoloD与RBRduetT.D.型传感器串进行采集，并通过柔性防渗衬层将传感器密封于钻孔内。