Driving forces of interleaving in the baroclinic front at the Equator SCIE SCOPUS

DC Field Value Language
dc.contributor.author Kuzmina, N -
dc.contributor.author Lee, JH -
dc.date.accessioned 2020-04-20T13:55:16Z -
dc.date.available 2020-04-20T13:55:16Z -
dc.date.created 2020-01-28 -
dc.date.issued 2005-12 -
dc.identifier.issn 0022-3670 -
dc.identifier.uri https://sciwatch.kiost.ac.kr/handle/2020.kiost/5002 -
dc.description.abstract The different types of instability in the equatorial beta-plane approximation are analyzed by means of a 2D linear stability problem. The double-diffusive (DD) and diffusive/baroclinic (2D baroclinic and McIntyre) instabilities are shown not to develop if contours of the mean salinity/density have a parabolic, symmetrical-relative-to-the- equator shape. Using modeling results, an illustrative scheme of Equatorial Undercurrent (EUC) regions where different types of instability can develop is presented and subsequently applied to understand the driving forces of the intrusions observed in a closed spaced CTD section, located between the equator and 1 degrees N. Long coherence intrusions are situated within two isopycnal layers, aligned to 25 (layer 1) and 26.3 (layer 2) sigma(T), where the vertical shear is low. It was shown from the model that the layer-1 intrusions being observed in the midlayer of the EUC where the mean horizontal gradient of salinity is approximately constant are likely generated by a combined effect of DD instability and instability due to linear horizontal shear. The layer-2 intrusions being observed in the lower part of EUC where the mean salinity contours have a parabolic shape likely arise because of linear horizontal shear only, while double diffusion can be considered as an effect that increases the growth rate of unstable modes. Special attention is focused on two different parts of the EUC in the mixing of the thermocline. It is noted that the EUC only makes the mass transfer by long coherence intrusions in certain layers where the vertical shear is small. Conversely, the EUC contributes to the growth rate of unstable modes due to the horizontal linear shear. -
dc.description.uri 1 -
dc.language English -
dc.publisher AMER METEOROLOGICAL SOC -
dc.subject FINE-STRUCTURE -
dc.subject PACIFIC-OCEAN -
dc.subject TURBULENCE -
dc.subject VARIABILITY -
dc.subject INTRUSIONS -
dc.title Driving forces of interleaving in the baroclinic front at the Equator -
dc.type Article -
dc.citation.endPage 2519 -
dc.citation.startPage 2501 -
dc.citation.title JOURNAL OF PHYSICAL OCEANOGRAPHY -
dc.citation.volume 35 -
dc.citation.number 12 -
dc.contributor.alternativeName 이재학 -
dc.identifier.bibliographicCitation JOURNAL OF PHYSICAL OCEANOGRAPHY, v.35, no.12, pp.2501 - 2519 -
dc.identifier.doi 10.1175/JPO2828.1 -
dc.identifier.scopusid 2-s2.0-31944444403 -
dc.identifier.wosid 000234801800013 -
dc.type.docType Article -
dc.description.journalClass 1 -
dc.subject.keywordPlus FINE-STRUCTURE -
dc.subject.keywordPlus PACIFIC-OCEAN -
dc.subject.keywordPlus TURBULENCE -
dc.subject.keywordPlus VARIABILITY -
dc.subject.keywordPlus INTRUSIONS -
dc.relation.journalWebOfScienceCategory Oceanography -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.relation.journalResearchArea Oceanography -
Appears in Collections:
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse