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

Interpreting Variations in Groundwater Flows from Repeated Distributed Thermal Perturbation Tests


Authors:
Owners: This resource does not have an owner who is an active HydroShare user. Contact CUAHSI (help@cuahsi.org) for information on this resource.
Type: Resource
Storage: The size of this resource is 542.5 KB
Created: Dec 29, 2017 at 11:55 p.m.
Last updated: Apr 09, 2018 at 8:41 p.m.
Citation: See how to cite this resource
Sharing Status: Public
Views: 1542
Downloads: 40
+1 Votes: Be the first one to 
 this.
Comments: No comments (yet)

Abstract

To better understand the groundwater resources of southern Nye County, Nevada, a multipart distributed thermal perturbation sensing (DTPS) test was performed on a complex of three wells. These wells penetrate an alluvial aquifer that drains the Nevada National Security Site, and characterizing the hydraulic properties and flow paths of the regional groundwater flow system has proven very difficult. The well complex comprised one pumping well and two observation wells, both located 18 m from the pumping well. Using fiber-optic cables and line heaters, DTPS tests were performed under both stressed and unstressed conditions. Each test injects heat into the water column over a period of one to two days, and observes the rising temperature during heat injection and falling temperatures after heating ceases. Aquifer thermal properties are inferred from temperature patterns in the cased section of the wells, and fluxes through the 30-m screened section are estimated based on a model that incorporates conductive and advective heat fluxes. Vertical variations in flux are examined on a scale of tens of cm. The actively flowing zones of the aquifer change between the stressed and unstressed test, and anisotropy in the aquifer permeability is apparent from the changing fluxes between tests. The fluxes inferred from the DTPS tests are compared to solute tracer tests previously performed on the same site. The DTPS-based fluxes are consistent with the fastest solute transport observed in the tracer test, but appear to overestimate the mean flux through the system.

Raw project data is available by contacting ctemps@unr.edu

Subject Keywords

Content

How to Cite

Hausner, M. B. (2018). Interpreting Variations in Groundwater Flows from Repeated Distributed Thermal Perturbation Tests, HydroShare, http://www.hydroshare.org/resource/54512e04d5ad497eba0102d04b2a15c6

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

http://creativecommons.org/licenses/by/4.0/
CC-BY

Comments

There are currently no comments

New Comment

required