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Geophysical mapping of aquifers in Bolivia

Dahlin, Torleif LU ; Gomez, Etzar LU and Gonzales, Andrés LU (2017) Society of Exploration Geophysicists International Exposition and 87th Annual Meeting, SEG 2017 In SEG Technical Program Expanded Abstracts p.5317-5321
Abstract

Electrical Resistivity Tomography (ERT) and Transient ElectroMagnetic sounding (TEM) is used for aquifer mapping in Bolivia. The results demonstrate the value of using geophysics in hydrogeological investigations of quaternary deposits, and that the methods are complementary so that the combination is beneficial. ERT produced highly useful results for delineating the aquifer geometry and internal aquifer structure, detect variations in sediment composition and locate areas with anomalous water composition. ERT proved to be very robust despite possible sources of disturbances in the form of powerlines and other infra structure. The depth penetration is however not always sufficient with the spreads mostly used here. TEM proved to be... (More)

Electrical Resistivity Tomography (ERT) and Transient ElectroMagnetic sounding (TEM) is used for aquifer mapping in Bolivia. The results demonstrate the value of using geophysics in hydrogeological investigations of quaternary deposits, and that the methods are complementary so that the combination is beneficial. ERT produced highly useful results for delineating the aquifer geometry and internal aquifer structure, detect variations in sediment composition and locate areas with anomalous water composition. ERT proved to be very robust despite possible sources of disturbances in the form of powerlines and other infra structure. The depth penetration is however not always sufficient with the spreads mostly used here. TEM proved to be useful for reaching larger depths, although the application of the method is restricted in parts of the areas due to various man-made objects that cause coupling problems. TEM delimitated a rather thin saline layer at the base of the Punata aquifer, which will contribute to enhance the local groundwater management and exploitation.

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type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Procs. SEG Technical Program Expanded Abstracts 2017, 24-27 September 2017, Houston
series title
SEG Technical Program Expanded Abstracts
pages
5 pages
conference name
Society of Exploration Geophysicists International Exposition and 87th Annual Meeting, SEG 2017
conference location
Houston, United States
conference dates
2017-09-24 - 2017-09-29
external identifiers
  • scopus:85121870684
ISSN
1052-3812
DOI
10.1190/segam2017-17737457.1
language
English
LU publication?
yes
additional info
Funding Information: The present study was supported by the Swedish International Development Agency (SIDA) and Society of Exploration Geophysicists-Geoscientists Without Borders, which is gratefully acknowledged. The work has been done.in collaboration between Lund University (Sweden), Universidad Mayor de San Simon (Bolivia), Aarhus University (Denmark) Thanks to UTO, SELA, MMAyA, UNASBVI, Corimex Ltda and Guideline Geo for logistic support. Special thanks to M?ns Larsson, Joakim M?rdh and all the bachelor students who participated during the fieldwork. Funding Information: The present study was supported by the Swedish International Development Agency (SIDA) and Society of Exploration Geophysicists-Geoscientists Without Borders, which is gratefully acknowledged. The work has been done.in collaboration between Lund University (Sweden), Universidad Mayor de San Simon (Bolivia), Aarhus University (Denmark) Thanks to UTO, SELA, MMAyA, UNASBVI, Corimex Ltda and Guideline Geo for logistic support. Special thanks to Måns Larsson, Joakim Mårdh and all the bachelor students who participated during the fieldwork. Publisher Copyright: © 2017 SEG.
id
9925c46c-f135-4dd6-a61a-4e917e7b799e
date added to LUP
2022-01-13 16:55:06
date last changed
2022-03-11 22:50:27
@inproceedings{9925c46c-f135-4dd6-a61a-4e917e7b799e,
  abstract     = {{<p>Electrical Resistivity Tomography (ERT) and Transient ElectroMagnetic sounding (TEM) is used for aquifer mapping in Bolivia. The results demonstrate the value of using geophysics in hydrogeological investigations of quaternary deposits, and that the methods are complementary so that the combination is beneficial. ERT produced highly useful results for delineating the aquifer geometry and internal aquifer structure, detect variations in sediment composition and locate areas with anomalous water composition. ERT proved to be very robust despite possible sources of disturbances in the form of powerlines and other infra structure. The depth penetration is however not always sufficient with the spreads mostly used here. TEM proved to be useful for reaching larger depths, although the application of the method is restricted in parts of the areas due to various man-made objects that cause coupling problems. TEM delimitated a rather thin saline layer at the base of the Punata aquifer, which will contribute to enhance the local groundwater management and exploitation.</p>}},
  author       = {{Dahlin, Torleif and Gomez, Etzar and Gonzales, Andrés}},
  booktitle    = {{Procs. SEG Technical Program Expanded Abstracts 2017, 24-27 September 2017, Houston}},
  issn         = {{1052-3812}},
  language     = {{eng}},
  month        = {{08}},
  pages        = {{5317--5321}},
  series       = {{SEG Technical Program Expanded Abstracts}},
  title        = {{Geophysical mapping of aquifers in Bolivia}},
  url          = {{http://dx.doi.org/10.1190/segam2017-17737457.1}},
  doi          = {{10.1190/segam2017-17737457.1}},
  year         = {{2017}},
}