Transpolar sea ice drift in the vicinity of the Yermak Plateau as observed by ARCTEMIZ 86 buoys
Strong diurnal tidal currents, in a region dominated by semidiurnal tidal surface displacements, were observed in the record of ARCTEMIZ 1986 buoys as they drifted over the Yermak Plateau, a submarine feature northwest of Svalbard. Similar diurnal currents in this area were first observed from obser...
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Monterey, California. Naval Postgraduate School
1990
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ftnavalpschool:oai:calhoun.nps.edu:10945/37542 2024-06-09T07:46:03+00:00 Transpolar sea ice drift in the vicinity of the Yermak Plateau as observed by ARCTEMIZ 86 buoys Hoffman, Paul J. Gascard, Jean-Claude Naval Postgraduate School (U.S.) Oceanography Bourke, Robert H. 1990-03 vi, 92 p. bill. (maps) application/pdf https://hdl.handle.net/10945/37542 en_US eng Monterey, California. Naval Postgraduate School https://hdl.handle.net/10945/37542 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. Transpolar Drift Sea Ice ARCTEMIZ 86 Yermak Plateau Diurnal Tidal Currents Thesis 1990 ftnavalpschool 2024-05-15T01:03:21Z Strong diurnal tidal currents, in a region dominated by semidiurnal tidal surface displacements, were observed in the record of ARCTEMIZ 1986 buoys as they drifted over the Yermak Plateau, a submarine feature northwest of Svalbard. Similar diurnal currents in this area were first observed from observations taken during the FRAM III and FRAM IV ice station drift experiments. The selective enhancement of topographic vorticity waves by resonant forcing from the K diurnal tide over the steeply sloping northern, northwestern and western flanks of the plateau is forwarded as an explanation for these anomalously strong diurnal currents. Diurnal loops were observed in the =trajectories of two buoys while they were over the northern flank of the Yermak Plateau. These loops were similar to those observed during MIZEX 84. The loops occurred during diurnal clockwise velocity peaks which have the same periodicity as the fort nightly (spring-neap) beat of surface height inequality caused by the superposition of the two principal semidiurnal tides. Sea ice for ced by the added convergent grinding motion arising from these enhanced diurnal clockwise currents should have a surface morphology different from the ice which did not flow through this area i.e., that which passes through Fram Strait to the west of the Yermak Plateau. Approved for public release; distribution is unlimited. Lieutenant, United States Navy http://archive.org/details/transpolarseiced1094537542 Thesis Fram Strait Sea ice Svalbard Yermak plateau Naval Postgraduate School: Calhoun Svalbard Yermak Plateau ENVELOPE(5.000,5.000,81.250,81.250) |
institution |
Open Polar |
collection |
Naval Postgraduate School: Calhoun |
op_collection_id |
ftnavalpschool |
language |
English |
topic |
Transpolar Drift Sea Ice ARCTEMIZ 86 Yermak Plateau Diurnal Tidal Currents |
spellingShingle |
Transpolar Drift Sea Ice ARCTEMIZ 86 Yermak Plateau Diurnal Tidal Currents Hoffman, Paul J. Transpolar sea ice drift in the vicinity of the Yermak Plateau as observed by ARCTEMIZ 86 buoys |
topic_facet |
Transpolar Drift Sea Ice ARCTEMIZ 86 Yermak Plateau Diurnal Tidal Currents |
description |
Strong diurnal tidal currents, in a region dominated by semidiurnal tidal surface displacements, were observed in the record of ARCTEMIZ 1986 buoys as they drifted over the Yermak Plateau, a submarine feature northwest of Svalbard. Similar diurnal currents in this area were first observed from observations taken during the FRAM III and FRAM IV ice station drift experiments. The selective enhancement of topographic vorticity waves by resonant forcing from the K diurnal tide over the steeply sloping northern, northwestern and western flanks of the plateau is forwarded as an explanation for these anomalously strong diurnal currents. Diurnal loops were observed in the =trajectories of two buoys while they were over the northern flank of the Yermak Plateau. These loops were similar to those observed during MIZEX 84. The loops occurred during diurnal clockwise velocity peaks which have the same periodicity as the fort nightly (spring-neap) beat of surface height inequality caused by the superposition of the two principal semidiurnal tides. Sea ice for ced by the added convergent grinding motion arising from these enhanced diurnal clockwise currents should have a surface morphology different from the ice which did not flow through this area i.e., that which passes through Fram Strait to the west of the Yermak Plateau. Approved for public release; distribution is unlimited. Lieutenant, United States Navy http://archive.org/details/transpolarseiced1094537542 |
author2 |
Gascard, Jean-Claude Naval Postgraduate School (U.S.) Oceanography Bourke, Robert H. |
format |
Thesis |
author |
Hoffman, Paul J. |
author_facet |
Hoffman, Paul J. |
author_sort |
Hoffman, Paul J. |
title |
Transpolar sea ice drift in the vicinity of the Yermak Plateau as observed by ARCTEMIZ 86 buoys |
title_short |
Transpolar sea ice drift in the vicinity of the Yermak Plateau as observed by ARCTEMIZ 86 buoys |
title_full |
Transpolar sea ice drift in the vicinity of the Yermak Plateau as observed by ARCTEMIZ 86 buoys |
title_fullStr |
Transpolar sea ice drift in the vicinity of the Yermak Plateau as observed by ARCTEMIZ 86 buoys |
title_full_unstemmed |
Transpolar sea ice drift in the vicinity of the Yermak Plateau as observed by ARCTEMIZ 86 buoys |
title_sort |
transpolar sea ice drift in the vicinity of the yermak plateau as observed by arctemiz 86 buoys |
publisher |
Monterey, California. Naval Postgraduate School |
publishDate |
1990 |
url |
https://hdl.handle.net/10945/37542 |
long_lat |
ENVELOPE(5.000,5.000,81.250,81.250) |
geographic |
Svalbard Yermak Plateau |
geographic_facet |
Svalbard Yermak Plateau |
genre |
Fram Strait Sea ice Svalbard Yermak plateau |
genre_facet |
Fram Strait Sea ice Svalbard Yermak plateau |
op_relation |
https://hdl.handle.net/10945/37542 |
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_ |
1801375730453446656 |