Geophysical mapping of aquifers in Bolivia
(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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- author
- Dahlin, Torleif LU ; Gomez, Etzar LU and Gonzales, Andrés LU
- organization
- publishing date
- 2017-08-17
- 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}}, }