Limits of heat as a tracer to quantify transient lateral river-aquifer exchanges

2017 ◽  
Vol 53 (9) ◽  
pp. 7740-7755 ◽  
Author(s):  
Yueqing Xie ◽  
Jordi Batlle-Aguilar
Keyword(s):  
Heat As A Tracer

scholarly journals Spatial Variability Pattern of Hyporheic Exchange in a braided River

2018 ◽  
Vol 246 ◽  
pp. 01098
Author(s):  
Guangdong Wu ◽  
Xiao Zhang ◽  
Jijun Xu
Keyword(s):  
Spatial Variability ◽  
Flow System ◽  
Hyporheic Exchange ◽  
Braided River ◽  
Downward Flow ◽  
One Dimensional ◽  
Physical Mechanisms ◽  
Braided Channel ◽  
Variability Pattern ◽  
Heat As A Tracer

The streambed flux is variable in space; the spatial variability results in part from bedforms, but few works on streambed fluxes in channels with strongly abrupt varying bedforms are carried out. Heat as a tracer to delineate the streambed flux pattern has been widely adopted in numerous fields. In this paper, a braided channel with complicated topography was selected as study site, where the temperature was monitored. One-dimensional (1-D) analytical method based on the amplitude attenuation (Ar) and 1-D numerical method were used to interpret the temperature. As a result, streambed fluxes of a total of 50 sites in the braided channel are obtained. From the results we can know the magnitude and direction of streamed flow velocity are spatially variable, even within a 1-m distance. Then, this study summarizes five bedform-driven flux patterns: ① downward flow driven by the head difference between groundwater and stream, ② downward flow related to a meter-scale pool, ③ a transition from upward to downward flow associated with a centimeter-scale riffle, ④ horizontal flow in braided bars and ⑤ upward flow driven by vegetation roots. Overall, multiple physical mechanisms together contributed to the complex streambed flow system, which reflected great challenges for the scaling up of point-in-space seepage flux.

scholarly journals Heat as a tracer for understanding transport processes in fractured media: Theory and field assessment from multiscale thermal push-pull tracer tests

2016 ◽  
Vol 52 (7) ◽  
pp. 5442-5457 ◽  
Author(s):  
Maria V. Klepikova ◽  
Tanguy Le Borgne ◽  
Olivier Bour ◽  
Marco Dentz ◽  
Rebecca Hochreutener ◽  
...  
Keyword(s):  
Tracer Tests ◽  
Transport Processes ◽  
Fractured Media ◽  
Media Theory ◽  
Field Assessment ◽  
Heat As A Tracer

Estimating groundwater discharge to surface waters using heat as a tracer in low flux environments: the role of thermal conductivity

2015 ◽  
Vol 30 (3) ◽  
pp. 383-395 ◽  
Author(s):  
Carlos Duque ◽  
Sascha Müller ◽  
Eva Sebok ◽  
Kinza Haider ◽  
Peter Engesgaard
Keyword(s):  
Thermal Conductivity ◽  
Surface Waters ◽  
Groundwater Discharge ◽  
Heat As A Tracer

Heat as a tracer to quantify processes and properties in the vadose zone: A review

2016 ◽  
Vol 159 ◽  
pp. 358-373 ◽  
Author(s):  
Landon J.S. Halloran ◽  
Gabriel C. Rau ◽  
Martin S. Andersen
Keyword(s):  
Vadose Zone ◽  
Heat As A Tracer

Tracer Tomography: Design Concepts and Field Experiments Using Heat as a Tracer

Ground Water ◽  
2014 ◽  
Vol 53 (S1) ◽  
pp. 139-148 ◽  
Author(s):  
Kennedy O. Doro ◽  
Olaf A. Cirpka ◽  
Carsten Leven
Keyword(s):  
Field Experiments ◽  
Design Concepts ◽  
Heat As A Tracer

Using heat as a tracer to estimate spatially distributed mean residence times in the hyporheic zone of a riffle-pool sequence

2013 ◽  
Vol 49 (6) ◽  
pp. 3697-3711 ◽  
Author(s):  
Ramon C. Naranjo ◽  
Greg Pohll ◽  
Richard G. Niswonger ◽  
Mark Stone ◽  
Alan Mckay
Keyword(s):  
Hyporheic Zone ◽  
Residence Times ◽  
Spatially Distributed ◽  
Mean Residence Times ◽  
Heat As A Tracer

scholarly journals Comparison of heat tracer models in the estimation of upward flux through streambed sediments

2012 ◽  
Vol 9 (4) ◽  
pp. 4305-4332 ◽  
Author(s):  
M. Shanafield ◽  
C. L. Shope ◽  
W. A. McKay
Keyword(s):  
Numerical Model ◽  
Water Movement ◽  
Winter Season ◽  
Analytical Models ◽  
Test Case ◽  
Groundwater Temperature ◽  
Order Of Magnitude ◽  
Theoretical Test ◽  
Streambed Sediments ◽  
Heat As A Tracer

Abstract. Although many studies examine the use of heat as a tracer to determine vertical infiltration of water into the streambed, few consider the case where both water and heat flow (advection and conduction) are in the upwards direction. In this study, we compare the usefulness of both a one-dimensional numerical model and two analytical solutions for the case where water movement is upwards and the (flat) groundwater temperature is greater than the diel temperatures at the surface. We first create a theoretical test case to compare expected temperature traces at various depths within the sediment column for each model both in the presence and absence of a vertical temperature gradient. These theoretical results are discussed in light of the assumptions inherent in the models. Then the models are applied to a study area located along a reach of the Truckee River in Nevada, USA, during the winter season and flux estimates both between models and between sensor depths are compared. Our results show that despite violation of some assumptions inherent in the analytical models, flux estimates over the entire vertical streambed column can be within one order of magnitude of the numerical model under some conditions. Further, predictions of downwards flux obtained using only the shallow sensors highlight the need to consider the physical processes to be measured when choosing sensor depth, especially when advection and conduction are upwards.

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