Show simple item record

dc.contributor.authorJansson, Pär
dc.contributor.authorFerré, Benedicte
dc.contributor.authorSilyakova, Anna
dc.contributor.authorDølven, Knut Ola
dc.contributor.authorOmstedt, Anders
dc.date.accessioned2019-06-05T08:13:00Z
dc.date.available2019-06-05T08:13:00Z
dc.date.issued2019-01-16
dc.description.abstractWe present a marine two‐phase gas model in one dimension (M2PG1) resolving interaction between the free and dissolved gas phases and the gas propagation toward the atmosphere in aquatic environments. The motivation for the model development was to improve the understanding of benthic methane seepage impact on aquatic environments and its effect on atmospheric greenhouse gas composition. Rising, dissolution, and exsolution of a wide size‐range of bubbles comprising several gas species are modeled simultaneously with the evolution of the aqueous gas concentrations. A model sensitivity analysis elucidates the relative importance of process parameterizations and environmental effects on the gas behavior. The parameterization of transfer velocity across bubble rims has the greatest influence on the resulting gas distribution, and bubble sizes are critical for predicting the fate of emitted bubble gas. High salinity increases the rise height of bubbles; whereas temperature does not significantly alter it. Vertical mixing and aerobic oxidation play insignificant roles in environments where advection is important. The model, applied in an Arctic Ocean methane seepage location, showed good agreement with acoustically derived bubble rise heights and in situ sampled methane concentration profiles. Coupled with numerical ocean circulation and biogeochemical models, M2PG1 could predict the impact of benthic methane emissions on the marine environment and the atmosphere on long time scales and large spatial scales. Because of its flexibility, M2PG1 can be applied in a wide variety of environmental settings and future M2PG1 applications may include gas leakage from seafloor installations and bubble injection by wave action.en_US
dc.descriptionSource at <a href=https://doi.org/10.1002/lom3.10307>https://doi.org/10.1002/lom3.10307</a>.en_US
dc.identifier.citationJansson, P., Ferré, B., Silyakova, A., Dølven, K.O. & Omstedt, A. (2019). A new numerical model for understanding free and dissolved gasprogression toward the atmosphere in aquatic methane seepagesystems. <i>Limnology and Oceanography : Methods, 17</i>(3), 223-239. https://doi.org/10.1002/lom3.10307en_US
dc.identifier.cristinIDFRIDAID 1659134
dc.identifier.doi10.1002/lom3.10307
dc.identifier.issn1541-5856
dc.identifier.urihttps://hdl.handle.net/10037/15432
dc.language.isoengen_US
dc.publisherAssociation for the Sciences of Limnology and Oceanographyen_US
dc.relation.isbasedonJansson, P., Ferre, B., Silyakova, A., Dølven, K.O. & Omstedt, A. (2019). Replication Data for: A new numerical model for understanding free and dissolved gas progression towards the atmosphere in aquatic methane seepage systems. <a href=https://doi.org/10.18710/LS2KUX>https://doi.org/10.18710/LS2KUX</a>. DataverseNO, V2en_US
dc.relation.journalLimnology and Oceanography : Methods
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/en_US
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450::Mineralogy, petrology, geochemistry: 462en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Mineralogi, petrologi, geokjemi: 462en_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452en_US
dc.titleA new numerical model for understanding free and dissolved gasprogression toward the atmosphere in aquatic methane seepage systemsen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


File(s) in this item

Thumbnail

This item appears in the following collection(s)

Show simple item record