Geomorphic control of radionuclide diffusion in desert soils

Jon Pelletier, Charles D. Harrington, John W. Whitney, Michael Cline, Stephen B. DeLong, Gordon Keating, Teryn K. Ebert

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Diffusion is a standard model for the vertical migration of radionuclides in soil profiles. Here we show that diffusivity values inferred from fallout 137CS profiles in soils on the Fortymile Wash alluvial fan, Nye County, Nevada, have a strong inverse correlation with the age of the geomorphic surface. This result suggests that radionuclide-bound particles are predominantly transported by infiltration rather than by bulk-mixing processes such as wetting/ drying, freeze/thaw, and bioturbation. Our results provide a preliminary basis for using soil-geomorphic mapping, point-based calibration data, and the diffusion model to predict radionuclide trans desert soils within a pedotransfer-function approach.

Original languageEnglish (US)
Article numberL23401
Pages (from-to)1-4
Number of pages4
JournalGeophysical Research Letters
Volume32
Issue number23
DOIs
StatePublished - Dec 16 2005

Fingerprint

desert soil
deserts
radioactive isotopes
radionuclide
soils
soil mapping
freeze drying
pedotransfer function
fallout
vertical migration
bioturbation
infiltration
profiles
alluvial fan
fans
wetting
diffusivity
soil profile
soil
calibration

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)

Cite this

Pelletier, J., Harrington, C. D., Whitney, J. W., Cline, M., DeLong, S. B., Keating, G., & Ebert, T. K. (2005). Geomorphic control of radionuclide diffusion in desert soils. Geophysical Research Letters, 32(23), 1-4. [L23401]. https://doi.org/10.1029/2005GL024347

Geomorphic control of radionuclide diffusion in desert soils. / Pelletier, Jon; Harrington, Charles D.; Whitney, John W.; Cline, Michael; DeLong, Stephen B.; Keating, Gordon; Ebert, Teryn K.

In: Geophysical Research Letters, Vol. 32, No. 23, L23401, 16.12.2005, p. 1-4.

Research output: Contribution to journalArticle

Pelletier, J, Harrington, CD, Whitney, JW, Cline, M, DeLong, SB, Keating, G & Ebert, TK 2005, 'Geomorphic control of radionuclide diffusion in desert soils', Geophysical Research Letters, vol. 32, no. 23, L23401, pp. 1-4. https://doi.org/10.1029/2005GL024347
Pelletier J, Harrington CD, Whitney JW, Cline M, DeLong SB, Keating G et al. Geomorphic control of radionuclide diffusion in desert soils. Geophysical Research Letters. 2005 Dec 16;32(23):1-4. L23401. https://doi.org/10.1029/2005GL024347
Pelletier, Jon ; Harrington, Charles D. ; Whitney, John W. ; Cline, Michael ; DeLong, Stephen B. ; Keating, Gordon ; Ebert, Teryn K. / Geomorphic control of radionuclide diffusion in desert soils. In: Geophysical Research Letters. 2005 ; Vol. 32, No. 23. pp. 1-4.
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