Regional Features of the Buoyancy Frequency Distribution in the Laptev and East Siberian Seas
Purpose. The aim of the paper is to study buoyancy frequency in the Laptev and East Siberian Seas and to assess correlation relations between the intra-year variability of the Väisäl – Brent frequency maximum and the climatic indices reflecting the atmosphere and hydrosphere state. Methods and Resul...
Published in: | Physical Oceanography |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Federal State Budget Scientific Institution «Marine Hydrophysical Institute of RAS»
2019
|
Subjects: | |
Online Access: | https://doi.org/10.22449/1573-160X-2019-5-387-396 https://doaj.org/article/12472dd236d44736868678b8f80eb453 |
id |
ftdoajarticles:oai:doaj.org/article:12472dd236d44736868678b8f80eb453 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:12472dd236d44736868678b8f80eb453 2023-05-15T14:58:11+02:00 Regional Features of the Buoyancy Frequency Distribution in the Laptev and East Siberian Seas A.A. Bukatov E.A. Pavlenko N.M. Solovei 2019-10-01T00:00:00Z https://doi.org/10.22449/1573-160X-2019-5-387-396 https://doaj.org/article/12472dd236d44736868678b8f80eb453 EN eng Federal State Budget Scientific Institution «Marine Hydrophysical Institute of RAS» http://physical-oceanography.ru/repository/2019/5/en_201905_03.pdf https://doaj.org/toc/1573-160X doi:10.22449/1573-160X-2019-5-387-396 1573-160X https://doaj.org/article/12472dd236d44736868678b8f80eb453 Physical Oceanography, Vol 26, Iss 5, Pp 387-396 (2019) arctic laptev sea east siberian sea buoyancy frequency water stability water vertical structure Oceanography GC1-1581 article 2019 ftdoajarticles https://doi.org/10.22449/1573-160X-2019-5-387-396 2022-12-31T03:51:26Z Purpose. The aim of the paper is to study buoyancy frequency in the Laptev and East Siberian Seas and to assess correlation relations between the intra-year variability of the Väisäl – Brent frequency maximum and the climatic indices reflecting the atmosphere and hydrosphere state. Methods and Results. Based on the World Ocean Atlas 2013 for 1955–2012, the features of spatial and temporal variability of the buoyancy frequency distribution and its maximum depth in the Laptev and East Siberian seas are considered. It is found that the highest values of the Väisäl – Brent frequency are observed in the estuaries of the rivers Lena, Khatanga, Kolyma and Indigirka in summer where they attain 70–86 cycle/hour. In the deep-water northern areas of the seas under study, the majority of the water area is covered with ice throughout the whole year. As a consequence the surface layer of water is heated slightly and stability of stratification is much lower. The buoyancy frequency values in the seasonal pycnocline attain 24–46 cycle/hour. As a result of advection of the transformed Pacific waters in the northern and southeastern regions of the East Siberian Sea, on the depths 25–55 m observed is the layer of constant pycnocline where the Väisäl – Brent frequency values can mount to 21 cycles/hour. Correlation analysis is carried out for the relations between the intra-annual variability of the Väisäl – Brent frequency maximum and the climatic indices (North Atlantic Oscillation, Arctic Oscillation, Pacific Decadal Oscillation, Gulf Stream North Wall) reflecting the atmosphere and hydrosphere state. It is shown that relationship between the buoyancy frequency maximum and the two latter indices is the most pronounced. Conclusions. The results of the carried out investigations show that the features of spatial-temporal variability of the buoyancy frequency distribution and its maximum depth in the Laptev and East Siberian seas are conditioned by the river discharge and also by advection in the Arctic region of the Atlantic and ... Article in Journal/Newspaper Arctic East Siberian Sea khatanga laptev Laptev Sea North Atlantic North Atlantic oscillation Directory of Open Access Journals: DOAJ Articles Arctic Laptev Sea Pacific Kolyma ENVELOPE(161.000,161.000,69.500,69.500) East Siberian Sea ENVELOPE(166.000,166.000,74.000,74.000) Indigirka ENVELOPE(149.609,149.609,70.929,70.929) Physical Oceanography 26 5 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
arctic laptev sea east siberian sea buoyancy frequency water stability water vertical structure Oceanography GC1-1581 |
spellingShingle |
arctic laptev sea east siberian sea buoyancy frequency water stability water vertical structure Oceanography GC1-1581 A.A. Bukatov E.A. Pavlenko N.M. Solovei Regional Features of the Buoyancy Frequency Distribution in the Laptev and East Siberian Seas |
topic_facet |
arctic laptev sea east siberian sea buoyancy frequency water stability water vertical structure Oceanography GC1-1581 |
description |
Purpose. The aim of the paper is to study buoyancy frequency in the Laptev and East Siberian Seas and to assess correlation relations between the intra-year variability of the Väisäl – Brent frequency maximum and the climatic indices reflecting the atmosphere and hydrosphere state. Methods and Results. Based on the World Ocean Atlas 2013 for 1955–2012, the features of spatial and temporal variability of the buoyancy frequency distribution and its maximum depth in the Laptev and East Siberian seas are considered. It is found that the highest values of the Väisäl – Brent frequency are observed in the estuaries of the rivers Lena, Khatanga, Kolyma and Indigirka in summer where they attain 70–86 cycle/hour. In the deep-water northern areas of the seas under study, the majority of the water area is covered with ice throughout the whole year. As a consequence the surface layer of water is heated slightly and stability of stratification is much lower. The buoyancy frequency values in the seasonal pycnocline attain 24–46 cycle/hour. As a result of advection of the transformed Pacific waters in the northern and southeastern regions of the East Siberian Sea, on the depths 25–55 m observed is the layer of constant pycnocline where the Väisäl – Brent frequency values can mount to 21 cycles/hour. Correlation analysis is carried out for the relations between the intra-annual variability of the Väisäl – Brent frequency maximum and the climatic indices (North Atlantic Oscillation, Arctic Oscillation, Pacific Decadal Oscillation, Gulf Stream North Wall) reflecting the atmosphere and hydrosphere state. It is shown that relationship between the buoyancy frequency maximum and the two latter indices is the most pronounced. Conclusions. The results of the carried out investigations show that the features of spatial-temporal variability of the buoyancy frequency distribution and its maximum depth in the Laptev and East Siberian seas are conditioned by the river discharge and also by advection in the Arctic region of the Atlantic and ... |
format |
Article in Journal/Newspaper |
author |
A.A. Bukatov E.A. Pavlenko N.M. Solovei |
author_facet |
A.A. Bukatov E.A. Pavlenko N.M. Solovei |
author_sort |
A.A. Bukatov |
title |
Regional Features of the Buoyancy Frequency Distribution in the Laptev and East Siberian Seas |
title_short |
Regional Features of the Buoyancy Frequency Distribution in the Laptev and East Siberian Seas |
title_full |
Regional Features of the Buoyancy Frequency Distribution in the Laptev and East Siberian Seas |
title_fullStr |
Regional Features of the Buoyancy Frequency Distribution in the Laptev and East Siberian Seas |
title_full_unstemmed |
Regional Features of the Buoyancy Frequency Distribution in the Laptev and East Siberian Seas |
title_sort |
regional features of the buoyancy frequency distribution in the laptev and east siberian seas |
publisher |
Federal State Budget Scientific Institution «Marine Hydrophysical Institute of RAS» |
publishDate |
2019 |
url |
https://doi.org/10.22449/1573-160X-2019-5-387-396 https://doaj.org/article/12472dd236d44736868678b8f80eb453 |
long_lat |
ENVELOPE(161.000,161.000,69.500,69.500) ENVELOPE(166.000,166.000,74.000,74.000) ENVELOPE(149.609,149.609,70.929,70.929) |
geographic |
Arctic Laptev Sea Pacific Kolyma East Siberian Sea Indigirka |
geographic_facet |
Arctic Laptev Sea Pacific Kolyma East Siberian Sea Indigirka |
genre |
Arctic East Siberian Sea khatanga laptev Laptev Sea North Atlantic North Atlantic oscillation |
genre_facet |
Arctic East Siberian Sea khatanga laptev Laptev Sea North Atlantic North Atlantic oscillation |
op_source |
Physical Oceanography, Vol 26, Iss 5, Pp 387-396 (2019) |
op_relation |
http://physical-oceanography.ru/repository/2019/5/en_201905_03.pdf https://doaj.org/toc/1573-160X doi:10.22449/1573-160X-2019-5-387-396 1573-160X https://doaj.org/article/12472dd236d44736868678b8f80eb453 |
op_doi |
https://doi.org/10.22449/1573-160X-2019-5-387-396 |
container_title |
Physical Oceanography |
container_volume |
26 |
container_issue |
5 |
_version_ |
1766330271068585984 |