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Near-glacier surveying of a subglacial discharge plume: Implications for plume parameterizations
dc.contributor.author | Jackson, Rebecca H. | |
dc.contributor.author | Shroyer, Emily L. | |
dc.contributor.author | Nash, Jonathan D. | |
dc.contributor.author | Sutherland, David A. | |
dc.contributor.author | Carroll, Dustin | |
dc.contributor.author | Fried, Mason J. | |
dc.contributor.author | Catania, Ginny A. | |
dc.contributor.author | Bartholomaus, Timothy C. | |
dc.contributor.author | Stearns, Leigh A. | |
dc.date.accessioned | 2018-11-13T21:08:47Z | |
dc.date.available | 2018-11-13T21:08:47Z | |
dc.date.issued | 2017-06-03 | |
dc.identifier.citation | Jackson, R. H., E. L. Shroyer, J. D. Nash, D. A. Sutherland, D. Carroll, M. J. Fried, G. A. Catania, T. C. Bartholomaus, and L. A. Stearns (2017), Near-glacier surveying of a subglacial discharge plume: Implications for plume parameterizations, Geophys. Res. Lett., 44, 6886–6894, doi:10.1002/2017GL073602 | en_US |
dc.identifier.uri | http://hdl.handle.net/1808/27327 | |
dc.description.abstract | At tidewater glaciers, plume dynamics affect submarine melting, fjord circulation, and the mixing of meltwater. Models often rely on buoyant plume theory to parameterize plumes and submarine melting; however, these parameterizations are largely untested due to a dearth of near‐glacier measurements. Here we present a high‐resolution ocean survey by ship and remotely operated boat near the terminus of Kangerlussuup Sermia in west Greenland. These novel observations reveal the 3‐D structure and transport of a near‐surface plume, originating at a large undercut conduit in the glacier terminus, that is inconsistent with axisymmetric plume theory, the most common representation of plumes in ocean‐glacier models. Instead, the observations suggest a wider upwelling plume—a “truncated” line plume of ∼200 m width—with higher entrainment and plume‐driven melt compared to the typical axisymmetric representation. Our results highlight the importance of a subglacial outlet's geometry in controlling plume dynamics, with implications for parameterizing the exchange flow and submarine melt in glacial fjord models. | en_US |
dc.description.sponsorship | NNX12AP50G | en_US |
dc.publisher | American Geophysical Union | en_US |
dc.rights | © 2017. American Geophysical Union. All Rights Reserved. | en_US |
dc.title | Near-glacier surveying of a subglacial discharge plume: Implications for plume parameterizations | en_US |
dc.type | Article | en_US |
kusw.kuauthor | Stearns, Leigh | |
kusw.kudepartment | Geology | en_US |
dc.identifier.doi | 10.1002/2017GL073602 | en_US |
dc.identifier.orcid | https://orcid.org/0000-0002-3763-8820 | en_US |
dc.identifier.orcid | https://orcid.org/0000-0002-2970-9895 | en_US |
dc.identifier.orcid | https://orcid.org/0000-0002-2843-8608 | en_US |
dc.identifier.orcid | https://orcid.org/0000-0003-1686-5255 | en_US |
dc.identifier.orcid | https://orcid.org/0000-0002-4197-152X | en_US |
dc.identifier.orcid | https://orcid.org/0000-0002-7561-5902 | en_US |
dc.identifier.orcid | https://orcid.org/0000-0002-1470-6720 | en_US |
dc.identifier.orcid | https://orcid.org/0000-0001-7358-7015 | en_US |
kusw.oaversion | Scholarly/refereed, publisher version | en_US |
kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
dc.rights.accessrights | openAccess | en_US |
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Geology Scholarly Works [248]