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Article
Spatial Variability in Biogenic Gas Accumulations in Peat Soils Is Revealed By Ground Penetrating Radar (GPR)
Geophysical Research Letters
  • Xavier Comas
  • Lee Slater
  • Andrew S. Reeve, University of Maine - Main
Document Type
Article
Publication Date
4-16-2005
Publication Number
L08401
Disciplines
Abstract/ Summary
We performed surface and borehole ground penetrating radar (GPR) tests, together with moisture probe measurements and direct gas sampling to detect areas of biogenic gas accumulation in a northern peatland. The main findings are: (1) shadow zones (signal scattering) observed in surface GPR correlate with areas of elevated CH4 and CO2 concentration; (2) high velocities in zero offset profiles and lower water content inferred from moisture probes correlate with surface GPR shadow zones; (3) zero offset profiles depict depth variable gas accumulation from 0-10% by volume; (4) strong reflectors may represent confining layers restricting upward gas migration. Our results have implications for defining the spatial distribution, volume and movement of biogenic gas in peatlands at multiple scales.
Citation/Publisher Attribution
Comas, X, Slater, L, and Reeve, A, 2005, Spatial Variability in Biogenic Gas Accumulations in Peat Soils Is Revealed By Ground Penetrating Radar (GPR): Geophysical Research Letters, v. 32, L08401. To view the published open abstract, go to http://dx.doi.org and enter the DOI.
Publisher Statement
© Copyright 2005 American Geophysical Union
DOI
10.1029/2004GL022297
Version
publisher's version of the published document
Citation Information
Xavier Comas, Lee Slater and Andrew S. Reeve. "Spatial Variability in Biogenic Gas Accumulations in Peat Soils Is Revealed By Ground Penetrating Radar (GPR)" Geophysical Research Letters Vol. 32 Iss. 8 (2005)
Available at: http://works.bepress.com/andrew_reeve/3/