2008
DOI: 10.1029/2007jg000575
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Seasonal geophysical monitoring of biogenic gases in a northern peatland: Implications for temporal and spatial variability in free phase gas production rates

Abstract: [1] A set of high resolution surface ground penetrating radar (GPR) surveys, combined with elevation rod (to monitor surface deformation) and gas flux measurements, were used to investigate in situ biogenic gas dynamics within a northern peatland (Caribou Bog, Maine). Gas production rates were directly estimated from the time series of GPR measurements. Spatial variability in gas production was also investigated by comparing two sites with different geological and ecological attributes, showing differences and… Show more

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Cited by 61 publications
(84 citation statements)
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“…Lowering atmospheric pressure and gas release are linked in freshwater lake environments (Mattson and Likens, 1990;Casper et al, 2000;Engle and Melack, 2000) and in peatlands (Rosenberry et al, 2003;Glaser et al, 2004;Strack et al, 2005;Tokida et al, 2007b;Comas et al, 2008). A relationship between lowering atmospheric pressure and gas release in the vicinity of data loggers was also seen in this study.…”
Section: Hydrologic Datasupporting
confidence: 58%
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“…Lowering atmospheric pressure and gas release are linked in freshwater lake environments (Mattson and Likens, 1990;Casper et al, 2000;Engle and Melack, 2000) and in peatlands (Rosenberry et al, 2003;Glaser et al, 2004;Strack et al, 2005;Tokida et al, 2007b;Comas et al, 2008). A relationship between lowering atmospheric pressure and gas release in the vicinity of data loggers was also seen in this study.…”
Section: Hydrologic Datasupporting
confidence: 58%
“…Though the study site in Caribou Bog, ME, USA (Fig. 2), is a much smaller and more accessible peatland, the processes controlling CH 4 production and emission are similar to those in the large peat basins of North America (Comas et al, 2008;Parsekian et al, 2010), suggesting that work performed on Maine's peatlands may be transferable to the larger northern peatland systems.…”
Section: Study Sitementioning
confidence: 99%
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“…Recent studies of peat thickness and peat basin volume using GPR include a variety of field sites and typically indicate discrepancies in peat volume estimates of about 20 % when compared to traditional direct methods such as coring (Rosa et al, 2009;Parsekian et al, 2012;Parry et al, 2014). Electrical resistivity imaging (ERI) has also been used in boreal systems for investigating several aspects of peatland stratigraphy and hydrogeology (Meyer, 1989;Slater and Reeve, 2002;Comas et al, 2004Comas et al, , 2011; however, no studies to our knowledge have focused on peat thickness characterization using ERI.…”
Section: Introductionmentioning
confidence: 99%
“…The soil was considered a mixture of liquid water (blue), gas bubbles (red), and peat/ice (brown). and since it is principally noninvasive it can be used to quantify free-phase biogenic gas reservoirs below the soil surface [Comas et al, 2007[Comas et al, , 2008. GPR antennas can be deployed in boreholes or on the soil surface without ground intrusion, characterizing an estimated soil volume through signal transmission or reflection.…”
Section: Introductionmentioning
confidence: 99%