The Iceland-Faroe Front: A Synergistic Study of Hydrography and Altimetry
Two triangular hydrographic surveys were conducted in the Iceland-Faroes region with sampling corresponding to the ERS-1 3-day commissioning-phase orbit. The CTD, XBT, and ADCP data show a very active frontal region changing on the order of days. Likewise, the altimetric and infrared data also show...
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ftnavalpschool:oai:calhoun.nps.edu:10945/43791 2024-06-09T07:45:52+00:00 The Iceland-Faroe Front: A Synergistic Study of Hydrography and Altimetry Tokmakian, Robin Oceanography 1994-11 application/pdf https://hdl.handle.net/10945/43791 unknown Journal of Physical Oceanography, Volume 24, pp. 2245-2262 https://hdl.handle.net/10945/43791 This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States. Article 1994 ftnavalpschool 2024-05-15T00:32:04Z Two triangular hydrographic surveys were conducted in the Iceland-Faroes region with sampling corresponding to the ERS-1 3-day commissioning-phase orbit. The CTD, XBT, and ADCP data show a very active frontal region changing on the order of days. Likewise, the altimetric and infrared data also show a highly variable region. The CTD/XBT data and the altimetric data are synergistically combined in an implementation of the Bernoulli inverse method to calculate velocity fields. A priori information for the inverse are the ERS-1 altimeter height differences. The method produces a velocity field much different from that using a strict reference depth of 800 m for a level of no motion. Velocities of 15-20 cm s-1 flow eastward along the shelf at a depth of 400- 500 m. Farther north, a strong eddy feature is visible along the western section. Along the western section the height differences calculated from the altimetry are similar to the height differences produced by the in~erse method. The results of the research show that I ) the Bernoulli inverse method produces a valid geostrophic velocity field, 2) altimeter data constrains the inverse method, and 3) the initial ERS-1 altimeter data are of good quality if handled carefully. Article in Journal/Newspaper Faroes Iceland Naval Postgraduate School: Calhoun |
institution |
Open Polar |
collection |
Naval Postgraduate School: Calhoun |
op_collection_id |
ftnavalpschool |
language |
unknown |
description |
Two triangular hydrographic surveys were conducted in the Iceland-Faroes region with sampling corresponding to the ERS-1 3-day commissioning-phase orbit. The CTD, XBT, and ADCP data show a very active frontal region changing on the order of days. Likewise, the altimetric and infrared data also show a highly variable region. The CTD/XBT data and the altimetric data are synergistically combined in an implementation of the Bernoulli inverse method to calculate velocity fields. A priori information for the inverse are the ERS-1 altimeter height differences. The method produces a velocity field much different from that using a strict reference depth of 800 m for a level of no motion. Velocities of 15-20 cm s-1 flow eastward along the shelf at a depth of 400- 500 m. Farther north, a strong eddy feature is visible along the western section. Along the western section the height differences calculated from the altimetry are similar to the height differences produced by the in~erse method. The results of the research show that I ) the Bernoulli inverse method produces a valid geostrophic velocity field, 2) altimeter data constrains the inverse method, and 3) the initial ERS-1 altimeter data are of good quality if handled carefully. |
author2 |
Oceanography |
format |
Article in Journal/Newspaper |
author |
Tokmakian, Robin |
spellingShingle |
Tokmakian, Robin The Iceland-Faroe Front: A Synergistic Study of Hydrography and Altimetry |
author_facet |
Tokmakian, Robin |
author_sort |
Tokmakian, Robin |
title |
The Iceland-Faroe Front: A Synergistic Study of Hydrography and Altimetry |
title_short |
The Iceland-Faroe Front: A Synergistic Study of Hydrography and Altimetry |
title_full |
The Iceland-Faroe Front: A Synergistic Study of Hydrography and Altimetry |
title_fullStr |
The Iceland-Faroe Front: A Synergistic Study of Hydrography and Altimetry |
title_full_unstemmed |
The Iceland-Faroe Front: A Synergistic Study of Hydrography and Altimetry |
title_sort |
iceland-faroe front: a synergistic study of hydrography and altimetry |
publishDate |
1994 |
url |
https://hdl.handle.net/10945/43791 |
genre |
Faroes Iceland |
genre_facet |
Faroes Iceland |
op_relation |
Journal of Physical Oceanography, Volume 24, pp. 2245-2262 https://hdl.handle.net/10945/43791 |
op_rights |
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States. |
_version_ |
1801375514594639872 |