Eintrag weiter verarbeiten
Submesoscale Vortical Wakes in the Lee of Topography
Gespeichert in:
| Zeitschriftentitel: | Journal of Physical Oceanography |
|---|---|
| Personen und Körperschaften: | , , , |
| In: | Journal of Physical Oceanography, 49, 2019, 7, S. 1949-1971 |
| Format: | E-Article |
| Sprache: | Unbestimmt |
| veröffentlicht: |
American Meteorological Society
|
| Schlagwörter: |
| author_facet |
Srinivasan, Kaushik McWilliams, James C. Molemaker, M. Jeroen Barkan, Roy Srinivasan, Kaushik McWilliams, James C. Molemaker, M. Jeroen Barkan, Roy |
|---|---|
| author |
Srinivasan, Kaushik McWilliams, James C. Molemaker, M. Jeroen Barkan, Roy |
| spellingShingle |
Srinivasan, Kaushik McWilliams, James C. Molemaker, M. Jeroen Barkan, Roy Journal of Physical Oceanography Submesoscale Vortical Wakes in the Lee of Topography Oceanography |
| author_sort |
srinivasan, kaushik |
| spelling |
Srinivasan, Kaushik McWilliams, James C. Molemaker, M. Jeroen Barkan, Roy 0022-3670 1520-0485 American Meteorological Society Oceanography http://dx.doi.org/10.1175/jpo-d-18-0042.1 <jats:title>Abstract</jats:title><jats:p>An idealized framework of steady barotropic flow past an isolated seamount in a background of constant stratification (with frequency <jats:italic>N</jats:italic>) and rotation (with Coriolis parameter <jats:italic>f</jats:italic>) is used to examine the formation, separation, instability of the turbulent bottom boundary layers (BBLs), and ultimately, the genesis of submesoscale coherent vortices (SCVs) in the ocean interior. The BBLs generate vertical vorticity <jats:italic>ζ</jats:italic> and potential vorticity <jats:italic>q</jats:italic> on slopes; the flow separates and spawns shear layers; barotropic and centrifugal shear instabilities form submesoscale vortical filaments and induce a high rate of local energy dissipation; the filaments organize into vortices that then horizontally merge and vertically align to form SCVs. These SCVs have <jats:italic>O</jats:italic>(1) Rossby numbers (<jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf1.gif" /></jats:inline-formula>) and horizontal and vertical scales that are much larger than those of the separated shear layers and associated vortical filaments. Although the upstream flow is barotropic, downstream baroclinicity manifests in the wake, depending on the value of the nondimensional height <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf2.gif" /></jats:inline-formula>, which is the ratio of the seamount height <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf3.gif" /></jats:inline-formula> to that of the Taylor height <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf4.gif" /></jats:inline-formula>, where <jats:italic>L</jats:italic> is the seamount half-width. When <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf5.gif" /></jats:inline-formula>, SCVs span the vertical extent of the seamount itself. However, for <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf6.gif" /></jats:inline-formula>, there is greater range of variation in the sizes of the SCVs in the wake, reflecting the wake baroclinicity caused by the topographic interaction. The aspect ratio of the wake SCVs has the scaling <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf7.gif" /></jats:inline-formula>, instead of the quasigeostrophic scaling <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf8.gif" /></jats:inline-formula>.</jats:p> Submesoscale Vortical Wakes in the Lee of Topography Journal of Physical Oceanography |
| doi_str_mv |
10.1175/jpo-d-18-0042.1 |
| facet_avail |
Online Free |
| finc_class_facet |
Allgemeine Naturwissenschaft |
| format |
ElectronicArticle |
| fullrecord |
blob:ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTE3NS9qcG8tZC0xOC0wMDQyLjE |
| id |
ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTE3NS9qcG8tZC0xOC0wMDQyLjE |
| institution |
DE-Zwi2 DE-D161 DE-Zi4 DE-Gla1 DE-15 DE-Pl11 DE-Rs1 DE-14 DE-105 DE-Ch1 DE-L229 DE-D275 DE-Bn3 DE-Brt1 |
| imprint |
American Meteorological Society, 2019 |
| imprint_str_mv |
American Meteorological Society, 2019 |
| issn |
0022-3670 1520-0485 |
| issn_str_mv |
0022-3670 1520-0485 |
| language |
Undetermined |
| mega_collection |
American Meteorological Society (CrossRef) |
| match_str |
srinivasan2019submesoscalevorticalwakesintheleeoftopography |
| publishDateSort |
2019 |
| publisher |
American Meteorological Society |
| recordtype |
ai |
| record_format |
ai |
| series |
Journal of Physical Oceanography |
| source_id |
49 |
| title |
Submesoscale Vortical Wakes in the Lee of Topography |
| title_unstemmed |
Submesoscale Vortical Wakes in the Lee of Topography |
| title_full |
Submesoscale Vortical Wakes in the Lee of Topography |
| title_fullStr |
Submesoscale Vortical Wakes in the Lee of Topography |
| title_full_unstemmed |
Submesoscale Vortical Wakes in the Lee of Topography |
| title_short |
Submesoscale Vortical Wakes in the Lee of Topography |
| title_sort |
submesoscale vortical wakes in the lee of topography |
| topic |
Oceanography |
| url |
http://dx.doi.org/10.1175/jpo-d-18-0042.1 |
| publishDate |
2019 |
| physical |
1949-1971 |
| description |
<jats:title>Abstract</jats:title><jats:p>An idealized framework of steady barotropic flow past an isolated seamount in a background of constant stratification (with frequency <jats:italic>N</jats:italic>) and rotation (with Coriolis parameter <jats:italic>f</jats:italic>) is used to examine the formation, separation, instability of the turbulent bottom boundary layers (BBLs), and ultimately, the genesis of submesoscale coherent vortices (SCVs) in the ocean interior. The BBLs generate vertical vorticity <jats:italic>ζ</jats:italic> and potential vorticity <jats:italic>q</jats:italic> on slopes; the flow separates and spawns shear layers; barotropic and centrifugal shear instabilities form submesoscale vortical filaments and induce a high rate of local energy dissipation; the filaments organize into vortices that then horizontally merge and vertically align to form SCVs. These SCVs have <jats:italic>O</jats:italic>(1) Rossby numbers (<jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf1.gif" /></jats:inline-formula>) and horizontal and vertical scales that are much larger than those of the separated shear layers and associated vortical filaments. Although the upstream flow is barotropic, downstream baroclinicity manifests in the wake, depending on the value of the nondimensional height <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf2.gif" /></jats:inline-formula>, which is the ratio of the seamount height <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf3.gif" /></jats:inline-formula> to that of the Taylor height <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf4.gif" /></jats:inline-formula>, where <jats:italic>L</jats:italic> is the seamount half-width. When <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf5.gif" /></jats:inline-formula>, SCVs span the vertical extent of the seamount itself. However, for <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf6.gif" /></jats:inline-formula>, there is greater range of variation in the sizes of the SCVs in the wake, reflecting the wake baroclinicity caused by the topographic interaction. The aspect ratio of the wake SCVs has the scaling <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf7.gif" /></jats:inline-formula>, instead of the quasigeostrophic scaling <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf8.gif" /></jats:inline-formula>.</jats:p> |
| container_issue |
7 |
| container_start_page |
1949 |
| container_title |
Journal of Physical Oceanography |
| container_volume |
49 |
| format_de105 |
Article, E-Article |
| format_de14 |
Article, E-Article |
| format_de15 |
Article, E-Article |
| format_de520 |
Article, E-Article |
| format_de540 |
Article, E-Article |
| format_dech1 |
Article, E-Article |
| format_ded117 |
Article, E-Article |
| format_degla1 |
E-Article |
| format_del152 |
Buch |
| format_del189 |
Article, E-Article |
| format_dezi4 |
Article |
| format_dezwi2 |
Article, E-Article |
| format_finc |
Article, E-Article |
| format_nrw |
Article, E-Article |
| _version_ |
1792345231643901952 |
| geogr_code |
not assigned |
| last_indexed |
2024-03-01T17:20:12.311Z |
| geogr_code_person |
not assigned |
| openURL |
url_ver=Z39.88-2004&ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fvufind.svn.sourceforge.net%3Agenerator&rft.title=Submesoscale+Vortical+Wakes+in+the+Lee+of+Topography&rft.date=2019-07-01&genre=article&issn=1520-0485&volume=49&issue=7&spage=1949&epage=1971&pages=1949-1971&jtitle=Journal+of+Physical+Oceanography&atitle=Submesoscale+Vortical+Wakes+in+the+Lee+of+Topography&aulast=Barkan&aufirst=Roy&rft_id=info%3Adoi%2F10.1175%2Fjpo-d-18-0042.1&rft.language%5B0%5D=und |
| SOLR | |
| _version_ | 1792345231643901952 |
| author | Srinivasan, Kaushik, McWilliams, James C., Molemaker, M. Jeroen, Barkan, Roy |
| author_facet | Srinivasan, Kaushik, McWilliams, James C., Molemaker, M. Jeroen, Barkan, Roy, Srinivasan, Kaushik, McWilliams, James C., Molemaker, M. Jeroen, Barkan, Roy |
| author_sort | srinivasan, kaushik |
| container_issue | 7 |
| container_start_page | 1949 |
| container_title | Journal of Physical Oceanography |
| container_volume | 49 |
| description | <jats:title>Abstract</jats:title><jats:p>An idealized framework of steady barotropic flow past an isolated seamount in a background of constant stratification (with frequency <jats:italic>N</jats:italic>) and rotation (with Coriolis parameter <jats:italic>f</jats:italic>) is used to examine the formation, separation, instability of the turbulent bottom boundary layers (BBLs), and ultimately, the genesis of submesoscale coherent vortices (SCVs) in the ocean interior. The BBLs generate vertical vorticity <jats:italic>ζ</jats:italic> and potential vorticity <jats:italic>q</jats:italic> on slopes; the flow separates and spawns shear layers; barotropic and centrifugal shear instabilities form submesoscale vortical filaments and induce a high rate of local energy dissipation; the filaments organize into vortices that then horizontally merge and vertically align to form SCVs. These SCVs have <jats:italic>O</jats:italic>(1) Rossby numbers (<jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf1.gif" /></jats:inline-formula>) and horizontal and vertical scales that are much larger than those of the separated shear layers and associated vortical filaments. Although the upstream flow is barotropic, downstream baroclinicity manifests in the wake, depending on the value of the nondimensional height <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf2.gif" /></jats:inline-formula>, which is the ratio of the seamount height <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf3.gif" /></jats:inline-formula> to that of the Taylor height <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf4.gif" /></jats:inline-formula>, where <jats:italic>L</jats:italic> is the seamount half-width. When <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf5.gif" /></jats:inline-formula>, SCVs span the vertical extent of the seamount itself. However, for <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf6.gif" /></jats:inline-formula>, there is greater range of variation in the sizes of the SCVs in the wake, reflecting the wake baroclinicity caused by the topographic interaction. The aspect ratio of the wake SCVs has the scaling <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf7.gif" /></jats:inline-formula>, instead of the quasigeostrophic scaling <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf8.gif" /></jats:inline-formula>.</jats:p> |
| doi_str_mv | 10.1175/jpo-d-18-0042.1 |
| facet_avail | Online, Free |
| finc_class_facet | Allgemeine Naturwissenschaft |
| format | ElectronicArticle |
| format_de105 | Article, E-Article |
| format_de14 | Article, E-Article |
| format_de15 | Article, E-Article |
| format_de520 | Article, E-Article |
| format_de540 | Article, E-Article |
| format_dech1 | Article, E-Article |
| format_ded117 | Article, E-Article |
| format_degla1 | E-Article |
| format_del152 | Buch |
| format_del189 | Article, E-Article |
| format_dezi4 | Article |
| format_dezwi2 | Article, E-Article |
| format_finc | Article, E-Article |
| format_nrw | Article, E-Article |
| geogr_code | not assigned |
| geogr_code_person | not assigned |
| id | ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTE3NS9qcG8tZC0xOC0wMDQyLjE |
| imprint | American Meteorological Society, 2019 |
| imprint_str_mv | American Meteorological Society, 2019 |
| institution | DE-Zwi2, DE-D161, DE-Zi4, DE-Gla1, DE-15, DE-Pl11, DE-Rs1, DE-14, DE-105, DE-Ch1, DE-L229, DE-D275, DE-Bn3, DE-Brt1 |
| issn | 0022-3670, 1520-0485 |
| issn_str_mv | 0022-3670, 1520-0485 |
| language | Undetermined |
| last_indexed | 2024-03-01T17:20:12.311Z |
| match_str | srinivasan2019submesoscalevorticalwakesintheleeoftopography |
| mega_collection | American Meteorological Society (CrossRef) |
| physical | 1949-1971 |
| publishDate | 2019 |
| publishDateSort | 2019 |
| publisher | American Meteorological Society |
| record_format | ai |
| recordtype | ai |
| series | Journal of Physical Oceanography |
| source_id | 49 |
| spelling | Srinivasan, Kaushik McWilliams, James C. Molemaker, M. Jeroen Barkan, Roy 0022-3670 1520-0485 American Meteorological Society Oceanography http://dx.doi.org/10.1175/jpo-d-18-0042.1 <jats:title>Abstract</jats:title><jats:p>An idealized framework of steady barotropic flow past an isolated seamount in a background of constant stratification (with frequency <jats:italic>N</jats:italic>) and rotation (with Coriolis parameter <jats:italic>f</jats:italic>) is used to examine the formation, separation, instability of the turbulent bottom boundary layers (BBLs), and ultimately, the genesis of submesoscale coherent vortices (SCVs) in the ocean interior. The BBLs generate vertical vorticity <jats:italic>ζ</jats:italic> and potential vorticity <jats:italic>q</jats:italic> on slopes; the flow separates and spawns shear layers; barotropic and centrifugal shear instabilities form submesoscale vortical filaments and induce a high rate of local energy dissipation; the filaments organize into vortices that then horizontally merge and vertically align to form SCVs. These SCVs have <jats:italic>O</jats:italic>(1) Rossby numbers (<jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf1.gif" /></jats:inline-formula>) and horizontal and vertical scales that are much larger than those of the separated shear layers and associated vortical filaments. Although the upstream flow is barotropic, downstream baroclinicity manifests in the wake, depending on the value of the nondimensional height <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf2.gif" /></jats:inline-formula>, which is the ratio of the seamount height <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf3.gif" /></jats:inline-formula> to that of the Taylor height <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf4.gif" /></jats:inline-formula>, where <jats:italic>L</jats:italic> is the seamount half-width. When <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf5.gif" /></jats:inline-formula>, SCVs span the vertical extent of the seamount itself. However, for <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf6.gif" /></jats:inline-formula>, there is greater range of variation in the sizes of the SCVs in the wake, reflecting the wake baroclinicity caused by the topographic interaction. The aspect ratio of the wake SCVs has the scaling <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf7.gif" /></jats:inline-formula>, instead of the quasigeostrophic scaling <jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jpo-d-18-0042.1-inf8.gif" /></jats:inline-formula>.</jats:p> Submesoscale Vortical Wakes in the Lee of Topography Journal of Physical Oceanography |
| spellingShingle | Srinivasan, Kaushik, McWilliams, James C., Molemaker, M. Jeroen, Barkan, Roy, Journal of Physical Oceanography, Submesoscale Vortical Wakes in the Lee of Topography, Oceanography |
| title | Submesoscale Vortical Wakes in the Lee of Topography |
| title_full | Submesoscale Vortical Wakes in the Lee of Topography |
| title_fullStr | Submesoscale Vortical Wakes in the Lee of Topography |
| title_full_unstemmed | Submesoscale Vortical Wakes in the Lee of Topography |
| title_short | Submesoscale Vortical Wakes in the Lee of Topography |
| title_sort | submesoscale vortical wakes in the lee of topography |
| title_unstemmed | Submesoscale Vortical Wakes in the Lee of Topography |
| topic | Oceanography |
| url | http://dx.doi.org/10.1175/jpo-d-18-0042.1 |