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Title: Modelling an induced thermal plume with data from electrical resistivity tomography and distributed temperature sensing: a case study in northeast Italy

Abstract

Groundwater tracer tests are often used to improve aquifer characterization, but they present several disadvantages, such as the need to pour solutions or dyes into the aquifer system and alteration of the water’s chemical properties. Thus, tracers can affect the groundwater flow mechanics and data interpretation becomes more complex, hindering effective study of ground heat pumps for low enthalpy geothermal systems. This paper presents a preliminary methodology based on a multidisciplinary application of heat as a tracer for defining the main parameters of shallow aquifers. The field monitoring techniques electrical resistivity tomography (ERT) and distributed temperature sensing (DTS) are noninvasive and were applied to a shallow-aquifer test site in northeast Italy. The combination of these measurement techniques supports the definition of the main aquifer parameters and therefore the construction of a reliable conceptual model, which is then described through the numerical code FEFLOW. This model is calibrated with DTS and validated by ERT outcomes. The reliability of the numerical model in terms of fate and transport is thereby enhanced, leading to the potential for better environmental management and protection of groundwater resources through more cost-effective solutions.

Authors:
;  [1];  [2]; ; ;  [1]
  1. University of Padua, Department of Geoscience (Italy)
  2. University of Erlangen –Nuremberg (Germany)
Publication Date:
OSTI Identifier:
22780874
Resource Type:
Journal Article
Journal Name:
Hydrogeology Journal
Additional Journal Information:
Journal Volume: 26; Journal Issue: 3; Other Information: Copyright (c) 2018 Springer-Verlag GmbH Germany, part of Springer Nature; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1431-2174
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; AQUIFERS; CHEMICAL PROPERTIES; COMPUTER CODES; DYES; ELECTRIC CONDUCTIVITY; ENTHALPY; ENVIRONMENTAL PROTECTION; FLOW MODELS; GEOTHERMAL SYSTEMS; GROUND WATER; HEAT; HEAT PUMPS; ITALY; MONITORING; PLUMES; RELIABILITY; TEMPERATURE MEASUREMENT; TOMOGRAPHY; TRACER TECHNIQUES

Citation Formats

Cultrera, Matteo, Boaga, Jacopo, Di Sipio, Eloisa, Dalla Santa, Giorgia, De Seta, Massimiliano, and Galgaro, Antonio. Modelling an induced thermal plume with data from electrical resistivity tomography and distributed temperature sensing: a case study in northeast Italy. United States: N. p., 2018. Web. doi:10.1007/S10040-017-1700-3.
Cultrera, Matteo, Boaga, Jacopo, Di Sipio, Eloisa, Dalla Santa, Giorgia, De Seta, Massimiliano, & Galgaro, Antonio. Modelling an induced thermal plume with data from electrical resistivity tomography and distributed temperature sensing: a case study in northeast Italy. United States. doi:10.1007/S10040-017-1700-3.
Cultrera, Matteo, Boaga, Jacopo, Di Sipio, Eloisa, Dalla Santa, Giorgia, De Seta, Massimiliano, and Galgaro, Antonio. Tue . "Modelling an induced thermal plume with data from electrical resistivity tomography and distributed temperature sensing: a case study in northeast Italy". United States. doi:10.1007/S10040-017-1700-3.
@article{osti_22780874,
title = {Modelling an induced thermal plume with data from electrical resistivity tomography and distributed temperature sensing: a case study in northeast Italy},
author = {Cultrera, Matteo and Boaga, Jacopo and Di Sipio, Eloisa and Dalla Santa, Giorgia and De Seta, Massimiliano and Galgaro, Antonio},
abstractNote = {Groundwater tracer tests are often used to improve aquifer characterization, but they present several disadvantages, such as the need to pour solutions or dyes into the aquifer system and alteration of the water’s chemical properties. Thus, tracers can affect the groundwater flow mechanics and data interpretation becomes more complex, hindering effective study of ground heat pumps for low enthalpy geothermal systems. This paper presents a preliminary methodology based on a multidisciplinary application of heat as a tracer for defining the main parameters of shallow aquifers. The field monitoring techniques electrical resistivity tomography (ERT) and distributed temperature sensing (DTS) are noninvasive and were applied to a shallow-aquifer test site in northeast Italy. The combination of these measurement techniques supports the definition of the main aquifer parameters and therefore the construction of a reliable conceptual model, which is then described through the numerical code FEFLOW. This model is calibrated with DTS and validated by ERT outcomes. The reliability of the numerical model in terms of fate and transport is thereby enhanced, leading to the potential for better environmental management and protection of groundwater resources through more cost-effective solutions.},
doi = {10.1007/S10040-017-1700-3},
journal = {Hydrogeology Journal},
issn = {1431-2174},
number = 3,
volume = 26,
place = {United States},
year = {2018},
month = {5}
}