{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["9(1)"],"submitter":["Riedel M"],"pubmed_abstract":["Widespread gas venting along the Cascadia margin is investigated from acoustic water column data and reveals a nonuniform regional distribution of over 1100 mapped acoustic flares. The highest number of flares occurs on the shelf, and the highest flare density is seen around the nutrition-rich outflow of the Juan de Fuca Strait. We determine ∼430 flow-rates at ∼340 individual flare locations along the margin with instantaneous in situ values ranging from ∼6 mL min-1 to ∼18 L min-1. Applying a tidal-modulation model, a depth-dependent methane density, and extrapolating these results across the margin using two normalization techniques yields a combined average in situ flow-rate of ∼88 × 106 kg y-1. The average methane flux-rate for the Cascadia margin is thus estimated to ∼0.9 g y-1m-2. Combined uncertainties result in a range of these values between 4.5 and 1800% of the estimated mean values."],"journal":["Nature communications"],"pagination":["3264"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC6093902"],"repository":["biostudies-literature"],"pubmed_title":["Distributed natural gas venting offshore along the Cascadia margin."],"pmcid":["PMC6093902"],"pubmed_authors":["Riedel M","Romer M","Scherwath M","Heesemann M","Spence GD","Veloso M"],"additional_accession":[]},"is_claimable":false,"name":"Distributed natural gas venting offshore along the Cascadia margin.","description":"Widespread gas venting along the Cascadia margin is investigated from acoustic water column data and reveals a nonuniform regional distribution of over 1100 mapped acoustic flares. The highest number of flares occurs on the shelf, and the highest flare density is seen around the nutrition-rich outflow of the Juan de Fuca Strait. We determine ∼430 flow-rates at ∼340 individual flare locations along the margin with instantaneous in situ values ranging from ∼6 mL min-1 to ∼18 L min-1. Applying a tidal-modulation model, a depth-dependent methane density, and extrapolating these results across the margin using two normalization techniques yields a combined average in situ flow-rate of ∼88 × 106 kg y-1. The average methane flux-rate for the Cascadia margin is thus estimated to ∼0.9 g y-1m-2. Combined uncertainties result in a range of these values between 4.5 and 1800% of the estimated mean values.","dates":{"release":"2018-01-01T00:00:00Z","publication":"2018 Aug","modification":"2025-04-04T22:00:22.653Z","creation":"2019-03-26T23:51:45Z"},"accession":"S-EPMC6093902","cross_references":{"pubmed":["30111802"],"doi":["10.1038/s41467-018-05736-x"]}}