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- W2280302783 abstract "The Northern Adelaide Plains is an important horticultural region in South Australia, however, excessive groundwater extractions have resulted in the development of a large cone of depression in the most heavily pumped area. Groundwater chemistry and environmental isotopes have been investigated to better understand the groundwater recharge and flow mechanisms for the region. Groundwater samples were collected along a fresh groundwater channel in a confined Tertiary carbonate aquifer which provides much of the regions groundwater resource. Groundwater residence times were estimated using carbon-14 after corrections for geochemical processes, and give ages up to 27,000 years. Preliminary groundwater velocity calculated from groundwater residence times is approximately 0.75 m/yr, which is an order of magnitude less than velocities calculated by hydraulic methods. Historical groundwater flux into the aquifer, representing the recharge to the aquifer before pumping commenced, is similarly an order of magnitude less than current estimates based on hydraulic methods. Although further work is required to improve the certainty of the radiometric velocities and recharge estimates, the data provides a better understanding of the natural, prepumping flow system, and will be of use in future management of the resource." @default.
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- W2280302783 date "2008-01-01" @default.
- W2280302783 modified "2023-09-23" @default.
- W2280302783 title "Groundwater Residence Time and Flow Velocity in Confined Tertiary Aquifers of the Northern Adelaide Plains, South Australia" @default.
- W2280302783 hasPublicationYear "2008" @default.
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