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Alluvial aquifers at geological boundaries: geophysical investigations and groundwater resources

Owen, Richard and Dahlin, Torleif LU (2005) In Groundwater and human development p.233-246
Abstract
Alluvial channel sands in active ephemeral streams are potentially highly productive aquifers that are normally fully recharged annually. The groundwater resource is constrained by the limited three-dimensional extent of these aquifers. Concepts are developed that propose an increase in alluvial aquifer dimensions at geological boundaries. Multi-electrode resistivity and ground penetrating radar are used to investigate the dimensions of an alluvial channel at a geological boundary with the more resistant lithology upstream. These investigations reveal that alluvial channel fill dimensions are increased in the overlying less-resistant lithology downstream of the boundary. Groundwater flow modelling has been used to determine aquifer... (More)
Alluvial channel sands in active ephemeral streams are potentially highly productive aquifers that are normally fully recharged annually. The groundwater resource is constrained by the limited three-dimensional extent of these aquifers. Concepts are developed that propose an increase in alluvial aquifer dimensions at geological boundaries. Multi-electrode resistivity and ground penetrating radar are used to investigate the dimensions of an alluvial channel at a geological boundary with the more resistant lithology upstream. These investigations reveal that alluvial channel fill dimensions are increased in the overlying less-resistant lithology downstream of the boundary. Groundwater flow modelling has been used to determine aquifer potential and identify key fluxes, indicating that significant irrigation potential exists from these aquifers.
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
Groundwater and human development
editor
Bocanegra, E; Hernandez, M; Usunoff, E; ; and
pages
233 - 246
publisher
A A Balkema Publishers
ISBN
9780415364430
language
English
LU publication?
yes
id
1d98980c-a093-45df-a012-d680266d8ed2 (old id 2344532)
date added to LUP
2012-02-27 14:51:28
date last changed
2018-06-07 13:12:49
@inbook{1d98980c-a093-45df-a012-d680266d8ed2,
  abstract     = {Alluvial channel sands in active ephemeral streams are potentially highly productive aquifers that are normally fully recharged annually. The groundwater resource is constrained by the limited three-dimensional extent of these aquifers. Concepts are developed that propose an increase in alluvial aquifer dimensions at geological boundaries. Multi-electrode resistivity and ground penetrating radar are used to investigate the dimensions of an alluvial channel at a geological boundary with the more resistant lithology upstream. These investigations reveal that alluvial channel fill dimensions are increased in the overlying less-resistant lithology downstream of the boundary. Groundwater flow modelling has been used to determine aquifer potential and identify key fluxes, indicating that significant irrigation potential exists from these aquifers.<br/>},
  author       = {Owen, Richard and Dahlin, Torleif},
  editor       = {Bocanegra, E and Hernandez, M and Usunoff, E},
  isbn         = {9780415364430},
  language     = {eng},
  pages        = {233--246},
  publisher    = {A A Balkema Publishers},
  series       = {Groundwater and human development},
  title        = {Alluvial aquifers at geological boundaries: geophysical investigations and groundwater resources},
  year         = {2005},
}