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Record Details

Record 12 of 877
Radon as a tracer of biogenic gas equilibration and transport from methane-saturated sediments
Author and Affiliation:
Martens, Christopher S.(North Carolina Univ., Chapel Hill, NC, United States)
Chanton, Jeffrey P.(North Carolina, University, Chapel Hill, United States)
Abstract: Data on Rn-222 activity in methane-rich gas bubbles from anoxic coastal sediments of Cape Lookout Bight, North Carolina, were used to determine gas equilibration with pore waters and the rates of ebullitive stripping and transport of gases to overlying waters and the atmosphere. Results showed that, during summer months, the bubble ebullition process strips and transports 1.9-4.8 percent/day of the standing crop of radon (and, by inference, other gases equilibrated with gas bubbles) in surface sediments of Cape Lookout Bight to the troposphere. Thus, the ebullitive mode of gas transport represents an effective mechanism for delivering reduced biogenic gases directly to the atmosphere.
Publication Date: Mar 20, 1989
Document ID:
19890047793
(Acquired Nov 28, 1995)
Accession Number: 89A35164
Subject Category: GEOPHYSICS
Document Type: Journal Article
Publication Information: Journal of Geophysical Research (ISSN 0148-0227); 94; 3451-345
Publisher Information: United States
Contract/Grant/Task Num: NAGW-593; NAGW-1445
Financial Sponsor: NASA; United States
Organization Source: North Carolina Univ.; Chapel Hill, NC, United States
Description: 9p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: CHEMICAL EQUILIBRIUM; GAS TRANSPORT; MARINE CHEMISTRY; METHANE; RADON ISOTOPES; SEDIMENTS; ANNUAL VARIATIONS; BUBBLES; CHEMICAL COMPOSITION; NITROGEN
Imprint And Other Notes: Journal of Geophysical Research (ISSN 0148-0227), vol. 94, March 20, 1989, p. 3451-3459.
Availability Source: Other Sources
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