Checking for non-preferred file/folder path names (may take a long time depending on the number of files/folders) ...

Induced Temperature Gradients to Examine Groundwater Flowpaths in Open Boreholes

Owners: This resource does not have an owner who is an active HydroShare user. Contact CUAHSI ( for information on this resource.
Type: Resource
Storage: The size of this resource is 1.7 MB
Created: Mar 31, 2018 at 11:16 p.m.
Last updated: Apr 09, 2018 at 8:15 p.m.
Citation: See how to cite this resource
Sharing Status: Public
Views: 1671
Downloads: 40
+1 Votes: Be the first one to 
Comments: No comments (yet)


Techniques for characterizing the hydraulic properties and groundwater flow processes of aquifers are essential to design hydrogeologic conceptual models. In this study, rapid time series temperature profiles within open‐groundwater wells in fractured rock were measured using fiber optic distributed temperature sensing (FO‐DTS). To identify zones of active groundwater flow, two continuous electrical heating cables were installed alongside a FO‐DTS cable to heat the column of water within the well and to create a temperature difference between the ambient temperature of the groundwater in the aquifer and that within the well. Additional tests were performed to examine the effects of pumping on hydraulic fracture interconnectivity around the well and to identify zones of increased groundwater flow. High‐ and low‐resolution FO‐DTS cable configurations were examined to test the sensitivities of the technique and compared with downhole video footage and geophysical logging to confirm the zones of active groundwater flow. Two examples are presented to demonstrate the usefulness of this new technique for rapid characterization of fracture zones in open boreholes. The combination of the FO‐DTS and heating cable has excellent scope as a rapid appraisal tool for borehole construction design and improving hydrogeologic conceptual models.

Raw project data is available by contacting

Subject Keywords


How to Cite

Banks, E. W. (2018). Induced Temperature Gradients to Examine Groundwater Flowpaths in Open Boreholes, HydroShare,

This resource is shared under the Creative Commons Attribution CC BY.


There are currently no comments

New Comment