River-borne NanoTEM survey for location of salt accession to the River Murray at Loxton

Volmer Berens; Michael Hatch; Tania Wilson; Tony Hill

doi:10.1071/ASEG2004ab010

ISSN: 2202-0586
E-ISSN:

oa River-borne NanoTEM survey for location of salt accession to the River Murray at Loxton
Authors Volmer Berens^a, Michael Hatch^b, Tania Wilson^c and Tony Hill^d
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^a Dept. of Water Land and Biodiversity Conservation,, Australia, [email protected] ^b Zonge Engineering and Research Organisation,, Australia, [email protected] ^c Dept. of Water Land and Biodiversity Conservation,, Australia, [email protected] ^d Dept. of Water Land and Biodiversity Conservation,, Australia, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2004, Issue ASEG2004 - 17th Geophysical Conference, Dec 2004, p. 1 - 4
DOI: https://doi.org/10.1071/ASEG2004ab010
- Published online: 01 Dec 2004

Abstract

As part of an ongoing commitment to the reduction of salt accession to the River Murray in South Australia, the South Australian Department for Water, Land and Biodiversity Conservation (DWLBC) is engaged in a series of investigations to determine the feasibility of the construction of salt interception schemes (SIS). An integrated multi-disciplinary approach has been adopted to develop an understanding of the hydrogeological processes, which is essential for effective scheme design.

To assist in identifying areas of salt accession, a river-borne NanoTEM survey was conducted in September 2003. Previous work at the Waikerie SIS highlighted the success of the river-borne Transient Electro-Magnetic (TEM) technique. These systems can provide valuable information and understanding of salt accession to the River Murray.

Traditional methods, such as river EC measurements and Run of River (RoR) EC surveys, have revealed that the Loxton and Bookpurnong reaches of the river receive substantial salt loads. These techniques provide limited spatial resolution, whereas the river-borne TEM has exceptional spatial resolution with soundings every 5 to 10 metres.

A total of 80 km of data over a 37 km stretch of the River Murray was collected near the townships of Loxton and Bookpurnong. The survey results correlate well with recent RoR data, sediment core ground-truthing and groundwater model flow budget results.

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References

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Barrett, B., Hatch, M., Heinson, G., and Telfer, A., 2003, Salinity monitoring of the Murray River using a towed TEM array: Proceedings of the 16 Annual ASEG Conference, Adelaide, South Australia.
Barrett, B., 2003, Water-borne geophysics for Murray River salt-load detection: MSc thesis, Department of Geology and Geophysics, Adelaide University, South Australia.
Doble, R. C, Walker, G. R., Jolly, I. D., and Simmons, C. T., 2003, Predicting the impacts of shallow saline groundwater on vegetation health. A MODFLOW 2000 module for alternating ET and recharge: MODFLOW and more 2003. Understanding through modelling; Golden, Colorado. International Ground Water Modelling Center (IGWMC), Colorado School of Mines.
Doble, R. C, Walker, G. R., Jolly, I. D., and Simmons, C. T., 2004, Methods of predicting the impacts of shallow saline groundwater on vegetation health using MODFLOW 2000: Proceedings of the 9 Murray Darling Basin groundwater workshop, Bendigo, Victoria.
Hatch, M., Barrett, B., Bennetts, D., Heinson, G, Telfer, A., and Roberts, C, 2002, Improved near surface mapping in groundwater studies: application of fast-sampling time-domain EM surveying methods: Preview, 96, 25-29
Hill, A., Hopkins, B., Munday, T., Howes, N., James-Smith, J., Yan, W., Wilson, T., Berens, V., Rammers, T., Telfer, A., and Howies, S., 2004, Loxton-Bookpurnong salt interception schemes - taking a multidisciplinary approach to the refinement of an informed hydrogeological model: Proceedings of the 9th Murray Darling Basin groundwater workshop, Bendigo Victoria.
Maclnnes, S., and Raymond, M., 2001, STEMINV documentation - smooth-model TEM inversion, version 3.00: Zonge Engineering and Research Organisation Inc.
Porter, B., 2001, Run of River surveys - a method of measuring salt load accessions to the River Murray on a kilometre by kilometre basis: 8th Murray Basin groundwater workshop, paper 8B.3.
Telfer, A., and Watkins, N., 1991, Waikerie salt interception scheme - final design report hydrogeology: Engineering and Water Supply (EWS) Department, South Australia.

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Article Type: Research Article

Keyword(s): NanoTEM; River Murray; Run of River; salt interception; transient electromagnetics surveys

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oa River-borne NanoTEM survey for location of salt accession to the River Murray at Loxton

Abstract

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