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Delineation of Fast Flow Paths in Porous Media Using Noble Gas Tracers.


DE200415006862

Publication Date 2002
Personal Author Hudson, G. B.; Moran, J. E.
Page Count 22
Abstract Isotopically enriched xenon isotopes are ideal for tracking the flow of relatively large volumes of groundwater. Dissolved noble gas tracers behave conservatively in the saturated zone, pose no health risk to drinking water supplies, and can be used with a large dynamic range. Different Xe isotopes can be used simultaneously at multiple recharge sources in a single experiment. Results from a tracer experiment at a California water district suggests that a small fraction of tracer moved from the recharge ponds through the thick, unconfined, coarse-grained alluvial aquifer to high capacity production wells at a horizontal velocity of 6 m/day. In contrast, mean water residence times indicate that the average rate of transport is 0.5 to 1 m/day.
Keywords
  • Aquifers
  • Ground water
  • California
  • Capacity
  • Drinking water
  • Ponds
  • Production
  • Transport
  • Velocity
  • Water
  • Xenon isotopes
Source Agency
  • Technical Information Center Oak Ridge Tennessee
Corporate Authors Lawrence Livermore National Lab., CA.; Department of Energy, Washington, DC.
Supplemental Notes Sponsored by Department of Energy, Washington, DC.
Document Type Technical Report
NTIS Issue Number 200416
Delineation of Fast Flow Paths in Porous Media Using Noble Gas Tracers.
Delineation of Fast Flow Paths in Porous Media Using Noble Gas Tracers.
DE200415006862

  • Aquifers
  • Ground water
  • California
  • Capacity
  • Drinking water
  • Ponds
  • Production
  • Transport
  • Velocity
  • Water
  • Xenon isotopes
  • Technical Information Center Oak Ridge Tennessee
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