Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 신경훈 | - |
dc.date.accessioned | 2018-04-17T04:50:20Z | - |
dc.date.available | 2018-04-17T04:50:20Z | - |
dc.date.issued | 2016-08 | - |
dc.identifier.citation | NATURE COMMUNICATIONS, v. 7, Article no. 12655 | en_US |
dc.identifier.issn | 2041-1723 | - |
dc.identifier.uri | https://www.nature.com/articles/ncomms12655 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11754/68021 | - |
dc.description.abstract | The presence of a di-unsaturated highly branched isoprenoid (HBI) lipid biomarker (diene II) in Southern Ocean sediments has previously been proposed as a proxy measure of palaeo Antarctic sea ice. Here we show that a source of diene II is the sympagic diatom Berkeleya adeliensis Medlin. Furthermore, the propensity for B. adeliensis to flourish in platelet ice is reflected by an offshore downward gradient in diene II concentration in ˃100 surface sediments from Antarctic coastal and near-coastal environments. Since platelet ice formation is strongly associated with super-cooled freshwater inflow, we further hypothesize that sedimentary diene II provides a potentially sensitive proxy indicator of landfast sea ice influenced by meltwater discharge from nearby glaciers and ice shelves, and re-examination of some previous diene II downcore records supports this hypothesis. The term IPSO25-Ice Proxy for the Southern Ocean with 25 carbon atoms-is proposed as a proxy name for diene II. | en_US |
dc.description.sponsorship | This work was supported by the University of Plymouth and the Korea Polar Research Institute (KOPRI, PD15010). We thank Mairi Fenton (BAS) for carrying out the sea ice sampling, Suzanne Maclachlan (British Ocean Sediment Core Research Facility, BOS-CORF, UK) and Rainer Gersonde (AWI, Germany) for sending us with some of the surface sediment material described in this study, and Xavier Crosta (EPOC, France) for providing us with previously reported diene II data. We also acknowledge Peter Bond from the University of Plymouth Electron Microscopy Centre for assistance with SEM and Robert Berstan from Isoprime Limited for assistance with GC-IRMS analysis. | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | NATURE PUBLISHING GROUP | en_US |
dc.subject | HIGHLY BRANCHED ISOPRENOIDS | en_US |
dc.subject | LAND-FAST ICE | en_US |
dc.subject | SOUTHERN-OCEAN | en_US |
dc.subject | MCMURDO SOUND | en_US |
dc.subject | PLATELET ICE | en_US |
dc.subject | WEDDELL SEA | en_US |
dc.subject | DIATOM ASSEMBLAGES | en_US |
dc.subject | SURFACE SEDIMENTS | en_US |
dc.subject | EAST ANTARCTICA | en_US |
dc.subject | ORGANIC-MATTER | en_US |
dc.title | Source identification and distribution reveals the potential of the geochemical Antarctic sea ice proxy IPSO25 | en_US |
dc.type | Article | en_US |
dc.relation.volume | 7 | - |
dc.identifier.doi | 10.1038/ncomms12655 | - |
dc.relation.page | 1-10 | - |
dc.relation.journal | NATURE COMMUNICATIONS | - |
dc.contributor.googleauthor | Belt, ST | - |
dc.contributor.googleauthor | Smik, L | - |
dc.contributor.googleauthor | Brown, A | - |
dc.contributor.googleauthor | Kim, J.H | - |
dc.contributor.googleauthor | Rowland, SJ | - |
dc.contributor.googleauthor | Allen, CS | - |
dc.contributor.googleauthor | Gal, JK | - |
dc.contributor.googleauthor | Shin, KH | - |
dc.contributor.googleauthor | Lee, JI | - |
dc.contributor.googleauthor | Taylor, KWR | - |
dc.relation.code | 2016003600 | - |
dc.sector.campus | E | - |
dc.sector.daehak | COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E] | - |
dc.sector.department | DEPARTMENT OF MARINE SCIENCE AND CONVERGENCE ENGINEERING | - |
dc.identifier.pid | shinkh | - |
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