Multi-year current time series in the eastern North Atlantic Ocean
Time series of currents from an array of 22 subsurface moorings in the Canary and Iberian Basins of the North Atlantic are analyzed with respect to low-frequency variability. The record lengths are usually 1 to 2 years but almost 9 years (site KIEL276, 33N, 22W) in one case. Maximal energies are obs...
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Language: | English |
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Sears Foundation of Marine Research
1992
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Online Access: | https://oceanrep.geomar.de/id/eprint/15379/ https://oceanrep.geomar.de/id/eprint/15379/1/M%C3%BCller.pdf https://doi.org/10.1357/002224092784797755 |
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ftoceanrep:oai:oceanrep.geomar.de:15379 2023-05-15T17:28:05+02:00 Multi-year current time series in the eastern North Atlantic Ocean Müller, Thomas J. Siedler, Gerold 1992 text https://oceanrep.geomar.de/id/eprint/15379/ https://oceanrep.geomar.de/id/eprint/15379/1/M%C3%BCller.pdf https://doi.org/10.1357/002224092784797755 en eng Sears Foundation of Marine Research https://oceanrep.geomar.de/id/eprint/15379/1/M%C3%BCller.pdf Müller, T. J. and Siedler, G. (1992) Multi-year current time series in the eastern North Atlantic Ocean. Open Access Journal of Marine Research, 50 . pp. 63-98. DOI 10.1357/002224092784797755 <https://doi.org/10.1357/002224092784797755>. doi:10.1357/002224092784797755 info:eu-repo/semantics/openAccess Article PeerReviewed 1992 ftoceanrep https://doi.org/10.1357/002224092784797755 2023-04-07T15:05:23Z Time series of currents from an array of 22 subsurface moorings in the Canary and Iberian Basins of the North Atlantic are analyzed with respect to low-frequency variability. The record lengths are usually 1 to 2 years but almost 9 years (site KIEL276, 33N, 22W) in one case. Maximal energies are observed at periods between 50 and 500 days, and high-energy events are found from time to time. The 9-year long series indicates changes in currents with a 3-4 year period, primarily in the zonal component, and anisotropic energy distributions are found for both current components at periods around 200 days. The vertical structure can be well approximated by the barotropic and first-order baroclinic dynamical modes or by one empirical orthogonal function. The regional distribution of spectral properties indicates higher energies in frontal zones and in the neighborhood of the Canary archipelago. In general, the kinetic energy in the month-to-year variability is lower than in the western basins of the North Atlantic. Article in Journal/Newspaper North Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Journal of Marine Research 50 1 63 98 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Time series of currents from an array of 22 subsurface moorings in the Canary and Iberian Basins of the North Atlantic are analyzed with respect to low-frequency variability. The record lengths are usually 1 to 2 years but almost 9 years (site KIEL276, 33N, 22W) in one case. Maximal energies are observed at periods between 50 and 500 days, and high-energy events are found from time to time. The 9-year long series indicates changes in currents with a 3-4 year period, primarily in the zonal component, and anisotropic energy distributions are found for both current components at periods around 200 days. The vertical structure can be well approximated by the barotropic and first-order baroclinic dynamical modes or by one empirical orthogonal function. The regional distribution of spectral properties indicates higher energies in frontal zones and in the neighborhood of the Canary archipelago. In general, the kinetic energy in the month-to-year variability is lower than in the western basins of the North Atlantic. |
format |
Article in Journal/Newspaper |
author |
Müller, Thomas J. Siedler, Gerold |
spellingShingle |
Müller, Thomas J. Siedler, Gerold Multi-year current time series in the eastern North Atlantic Ocean |
author_facet |
Müller, Thomas J. Siedler, Gerold |
author_sort |
Müller, Thomas J. |
title |
Multi-year current time series in the eastern North Atlantic Ocean |
title_short |
Multi-year current time series in the eastern North Atlantic Ocean |
title_full |
Multi-year current time series in the eastern North Atlantic Ocean |
title_fullStr |
Multi-year current time series in the eastern North Atlantic Ocean |
title_full_unstemmed |
Multi-year current time series in the eastern North Atlantic Ocean |
title_sort |
multi-year current time series in the eastern north atlantic ocean |
publisher |
Sears Foundation of Marine Research |
publishDate |
1992 |
url |
https://oceanrep.geomar.de/id/eprint/15379/ https://oceanrep.geomar.de/id/eprint/15379/1/M%C3%BCller.pdf https://doi.org/10.1357/002224092784797755 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/15379/1/M%C3%BCller.pdf Müller, T. J. and Siedler, G. (1992) Multi-year current time series in the eastern North Atlantic Ocean. Open Access Journal of Marine Research, 50 . pp. 63-98. DOI 10.1357/002224092784797755 <https://doi.org/10.1357/002224092784797755>. doi:10.1357/002224092784797755 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1357/002224092784797755 |
container_title |
Journal of Marine Research |
container_volume |
50 |
container_issue |
1 |
container_start_page |
63 |
op_container_end_page |
98 |
_version_ |
1766120549025579008 |