Cargando…

An Intrathermocline Eddy and a tropical cyclone in the Bay of Bengal

The Bay of Bengal, subjected to monsoonal forcing and tropical cyclones, displays a complex field of ocean eddies. On 5 December 2013 a sub-surface vortex or Intrathermocline Eddy (ITE) composed of water characteristic of the Andaman Sea was observed within the thermocline of the western Bay of Beng...

Descripción completa

Detalles Bibliográficos
Autores principales: Gordon, Arnold L., Shroyer, Emily, Murty, V. S. N.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5388918/
https://www.ncbi.nlm.nih.gov/pubmed/28401909
http://dx.doi.org/10.1038/srep46218
_version_ 1782521202104860672
author Gordon, Arnold L.
Shroyer, Emily
Murty, V. S. N.
author_facet Gordon, Arnold L.
Shroyer, Emily
Murty, V. S. N.
author_sort Gordon, Arnold L.
collection PubMed
description The Bay of Bengal, subjected to monsoonal forcing and tropical cyclones, displays a complex field of ocean eddies. On 5 December 2013 a sub-surface vortex or Intrathermocline Eddy (ITE) composed of water characteristic of the Andaman Sea was observed within the thermocline of the western Bay of Bengal. We propose that the ITE was the product of Tropical Cyclone Lehar interaction on 27 November 2013 with a westward propagating surface eddy from the eastern Bay of Bengal. While Lehar’s interaction with the ocean initially removes heat from the upper layers of the eddy, air-sea flux is limited as the deeper portions of the eddy was subducted into the stratified thermocline, inhibiting further interaction with the atmosphere. The ITE core from 30 to 150 m is thus isolated from local air-sea fluxes by strong stratification at the mixed layer base, and its periphery is stable to shear instability, suggestive of longevity and the ability to carry water far distances with minimal modification.
format Online
Article
Text
id pubmed-5388918
institution National Center for Biotechnology Information
language English
publishDate 2017
publisher Nature Publishing Group
record_format MEDLINE/PubMed
spelling pubmed-53889182017-04-14 An Intrathermocline Eddy and a tropical cyclone in the Bay of Bengal Gordon, Arnold L. Shroyer, Emily Murty, V. S. N. Sci Rep Article The Bay of Bengal, subjected to monsoonal forcing and tropical cyclones, displays a complex field of ocean eddies. On 5 December 2013 a sub-surface vortex or Intrathermocline Eddy (ITE) composed of water characteristic of the Andaman Sea was observed within the thermocline of the western Bay of Bengal. We propose that the ITE was the product of Tropical Cyclone Lehar interaction on 27 November 2013 with a westward propagating surface eddy from the eastern Bay of Bengal. While Lehar’s interaction with the ocean initially removes heat from the upper layers of the eddy, air-sea flux is limited as the deeper portions of the eddy was subducted into the stratified thermocline, inhibiting further interaction with the atmosphere. The ITE core from 30 to 150 m is thus isolated from local air-sea fluxes by strong stratification at the mixed layer base, and its periphery is stable to shear instability, suggestive of longevity and the ability to carry water far distances with minimal modification. Nature Publishing Group 2017-04-12 /pmc/articles/PMC5388918/ /pubmed/28401909 http://dx.doi.org/10.1038/srep46218 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Gordon, Arnold L.
Shroyer, Emily
Murty, V. S. N.
An Intrathermocline Eddy and a tropical cyclone in the Bay of Bengal
title An Intrathermocline Eddy and a tropical cyclone in the Bay of Bengal
title_full An Intrathermocline Eddy and a tropical cyclone in the Bay of Bengal
title_fullStr An Intrathermocline Eddy and a tropical cyclone in the Bay of Bengal
title_full_unstemmed An Intrathermocline Eddy and a tropical cyclone in the Bay of Bengal
title_short An Intrathermocline Eddy and a tropical cyclone in the Bay of Bengal
title_sort intrathermocline eddy and a tropical cyclone in the bay of bengal
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5388918/
https://www.ncbi.nlm.nih.gov/pubmed/28401909
http://dx.doi.org/10.1038/srep46218
work_keys_str_mv AT gordonarnoldl anintrathermoclineeddyandatropicalcycloneinthebayofbengal
AT shroyeremily anintrathermoclineeddyandatropicalcycloneinthebayofbengal
AT murtyvsn anintrathermoclineeddyandatropicalcycloneinthebayofbengal
AT gordonarnoldl intrathermoclineeddyandatropicalcycloneinthebayofbengal
AT shroyeremily intrathermoclineeddyandatropicalcycloneinthebayofbengal
AT murtyvsn intrathermoclineeddyandatropicalcycloneinthebayofbengal