Computer Science
Scientific paper
Sep 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984e%26psl..70...61o&link_type=abstract
Earth and Planetary Science Letters, Volume 70, Issue 1, p. 61-68.
Computer Science
8
Scientific paper
Diffusion coefficients of helium and argon in unconsolidated deep-sea sediment were determined. The diffusing gas flux through sample sediment was measured by mass spectrometry. The diffusivities in the sample sediment were calculated by a two-layer model, and compared with the ``formation factors'' (resistivity ratios of bulk sediment to the pore water). The linear relationship between resistivity and diffusivity was established, and it was concluded that the resistivity technique provides a simple means of assessing the retardation effect on diffusion by sediment geometrical factors. The molecular diffusion coefficients of helium and argon in water at 2°C were found to be 42 (+/-6) × 10-6 cm2 s-1 and 8.6 (+/-1.2) × 10-6 cm2 s-1, respectively.
Horibe Yoshio
Ohsumi Takashi
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