Temperature Mapping as an Indirect Characterization Method for Surface Water-Hyporheic Zone Exchange

The purpose of this part of the project is to compare hyporheic exchange measurement methods and evaluate feasibility of using fiber optic DTS in a small stream (East Fork Poplar Creek) in Tennessee. CTEMPS stand-alone high resolution temperature loggers and fiber optic DTS were used to measure temperature gradients between stream-bed sediments and a stream to estimate groundwater discharge to surface water across a small hyporheic zone. There are also in-stream piezometer, electrical resistivity, and in-stream tracer test data to compare with the temperature method.

Data will be available upon in September 2021.

本部分项目旨在对比研究河床沉积层与河流之间的地下水交换测量方法，并评估在田纳西州的小溪（东叉白杨溪）中使用光纤分布式温度传感技术（DTS）的可行性。项目采用了独立式高分辨率温度记录仪（CTEMPS）和光纤DTS技术，以测量河床沉积层与河流之间的温度梯度，进而估算小尺度河床地下水向地表水的排泄量。此外，还收集了河流中的压力计、电导率和河流中的示踪剂试验数据，以与温度测量方法进行对比。预计数据将于2021年9月开放。