Dynamic Topography (ERS-1/2 and Seatruth) of Subtropical Ring (Storm 0) in the Storm Corridor (32–34°N, Eastern Basin, North Atlantic Ocean)
Hydrographic measurements were made on RRS ‘Charles Darwin’ Cruise CD97 of the structure of a Subtropical Ring called STORM discovered south-west of the Azores in October 1995 which moved westward along a latitude near 32·5°N. The results showed an elliptical ring structure with a ratio of minor to...
Published in: | Journal of the Marine Biological Association of the United Kingdom |
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Language: | English |
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1998
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Online Access: | http://dx.doi.org/10.1017/s0025315400041503 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315400041503 |
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crcambridgeupr:10.1017/s0025315400041503 2024-09-15T18:22:54+00:00 Dynamic Topography (ERS-1/2 and Seatruth) of Subtropical Ring (Storm 0) in the Storm Corridor (32–34°N, Eastern Basin, North Atlantic Ocean) Pingree, R.D. Sinha, B. 1998 http://dx.doi.org/10.1017/s0025315400041503 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315400041503 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of the Marine Biological Association of the United Kingdom volume 78, issue 2, page 351-376 ISSN 0025-3154 1469-7769 journal-article 1998 crcambridgeupr https://doi.org/10.1017/s0025315400041503 2024-07-31T04:03:36Z Hydrographic measurements were made on RRS ‘Charles Darwin’ Cruise CD97 of the structure of a Subtropical Ring called STORM discovered south-west of the Azores in October 1995 which moved westward along a latitude near 32·5°N. The results showed an elliptical ring structure with a ratio of minor to major axis of 0·6. The external Ring structure extended across a scale of ~400 km in an east-west direction along the major axis of the structure. The internal structure showed isotherms (isopycnals) that were domed upwards by ~200 m. The swirl transport in the Ring was 44 Sv with a negligible barotropic component and the cyclonic flow extended throughout the water column from the surface (maximum ~50cms -1 , at a radial distance of ~100km) with reduced intensity to the sea-floor ~4km depth where the flow was effectively zero. The surface currents and dynamic height data showed that the STORM centre was associated with a ~38cm lowering of sea level. The ERS-1 and ERS-2 altimeter surface signature of STORM revealed a similar structure (~42cm sea level depression) but with a larger scale of influence ~500 km. The remote sensing surface elevation structure derived from altimetry also maps (~-600X) changes in the deeper ocean temperature structure and transport (1 cm change equivalent ~ 1 Sv) in the general region. A ~500 d record from a current meter mooring deployed in the region showed three STORM signatures, each separated by a mean of ~180 days. In June 1996, HMS ‘Hecla’ crossed the North Atlantic at a latitude near 33°N and found three STORM temperature signatures. Article in Journal/Newspaper North Atlantic Cambridge University Press Journal of the Marine Biological Association of the United Kingdom 78 2 351 376 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Hydrographic measurements were made on RRS ‘Charles Darwin’ Cruise CD97 of the structure of a Subtropical Ring called STORM discovered south-west of the Azores in October 1995 which moved westward along a latitude near 32·5°N. The results showed an elliptical ring structure with a ratio of minor to major axis of 0·6. The external Ring structure extended across a scale of ~400 km in an east-west direction along the major axis of the structure. The internal structure showed isotherms (isopycnals) that were domed upwards by ~200 m. The swirl transport in the Ring was 44 Sv with a negligible barotropic component and the cyclonic flow extended throughout the water column from the surface (maximum ~50cms -1 , at a radial distance of ~100km) with reduced intensity to the sea-floor ~4km depth where the flow was effectively zero. The surface currents and dynamic height data showed that the STORM centre was associated with a ~38cm lowering of sea level. The ERS-1 and ERS-2 altimeter surface signature of STORM revealed a similar structure (~42cm sea level depression) but with a larger scale of influence ~500 km. The remote sensing surface elevation structure derived from altimetry also maps (~-600X) changes in the deeper ocean temperature structure and transport (1 cm change equivalent ~ 1 Sv) in the general region. A ~500 d record from a current meter mooring deployed in the region showed three STORM signatures, each separated by a mean of ~180 days. In June 1996, HMS ‘Hecla’ crossed the North Atlantic at a latitude near 33°N and found three STORM temperature signatures. |
format |
Article in Journal/Newspaper |
author |
Pingree, R.D. Sinha, B. |
spellingShingle |
Pingree, R.D. Sinha, B. Dynamic Topography (ERS-1/2 and Seatruth) of Subtropical Ring (Storm 0) in the Storm Corridor (32–34°N, Eastern Basin, North Atlantic Ocean) |
author_facet |
Pingree, R.D. Sinha, B. |
author_sort |
Pingree, R.D. |
title |
Dynamic Topography (ERS-1/2 and Seatruth) of Subtropical Ring (Storm 0) in the Storm Corridor (32–34°N, Eastern Basin, North Atlantic Ocean) |
title_short |
Dynamic Topography (ERS-1/2 and Seatruth) of Subtropical Ring (Storm 0) in the Storm Corridor (32–34°N, Eastern Basin, North Atlantic Ocean) |
title_full |
Dynamic Topography (ERS-1/2 and Seatruth) of Subtropical Ring (Storm 0) in the Storm Corridor (32–34°N, Eastern Basin, North Atlantic Ocean) |
title_fullStr |
Dynamic Topography (ERS-1/2 and Seatruth) of Subtropical Ring (Storm 0) in the Storm Corridor (32–34°N, Eastern Basin, North Atlantic Ocean) |
title_full_unstemmed |
Dynamic Topography (ERS-1/2 and Seatruth) of Subtropical Ring (Storm 0) in the Storm Corridor (32–34°N, Eastern Basin, North Atlantic Ocean) |
title_sort |
dynamic topography (ers-1/2 and seatruth) of subtropical ring (storm 0) in the storm corridor (32–34°n, eastern basin, north atlantic ocean) |
publisher |
Cambridge University Press (CUP) |
publishDate |
1998 |
url |
http://dx.doi.org/10.1017/s0025315400041503 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315400041503 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Journal of the Marine Biological Association of the United Kingdom volume 78, issue 2, page 351-376 ISSN 0025-3154 1469-7769 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0025315400041503 |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
container_volume |
78 |
container_issue |
2 |
container_start_page |
351 |
op_container_end_page |
376 |
_version_ |
1810462952697888768 |