Comparison of fiber-optic distributed temperature sensing and high-sensitivity sensor spatial surveying of stream temperature

Geoelectric Characterization of Hyporheic Exchange Flow in the Bedrock‐Lined Streambed of East Fork Poplar Creek, Oak Ridge, Tennessee

“…Heat‐tracing methods, used in alluvial rivers since the 1960s, generally have limited uses in bedrock riverbeds with the exception of the use thermal infrared cameras that image the temperature distribution of the stream surface and distributed temperature sensing (DTS) methods used on the riverbed and within the stream (Anderson, 2005; Briggs et al., 2012; Hare et al., 2015; Mamer & Lowry, 2013; McAliley et al., 2022; Mohamed, Gabrielli, et al., 2021; Rosenberry et al., 2016). DTS methods provide near‐continuous temperature data on the riverbed or within the SW through time at fine spatial scales of about 1 m over distances of a few kilometers (Rosenberry et al., 2016) and offer a plausible alternative to point‐scale heat tracing in bedrock rivers, because SW is strongly affected by diurnal and annual temperature variations whereas GW temperature remains close to the mean annual air temperature.…”

Visualization of Distributed Temperature Sensing shows fine-scale water temperature dynamics in a subarctic stream over melt season

“…Technological advances in high-resolution monitoring offer tools to improve processes understanding, feed hydrological-thermal models and guide more targeted management strategies (Ouellet et al, 2020). The development of Distributed Temperature Sensing (DTS) allows high-resolution spatial (centimeter to meter scale) and temporal (minutes to hours) continuous measurement of water temperature to enable identification of patterns and processes at finer-scales than possible previously (Matheswaran et al, 2014;Mohamed et al, 2021). However, the use of DTS to explore in-stream temperature dynamics in high-latitude regions over seasonal scales has been poorly documented to date.…”