Statistical Analysis of Observed Iceberg Drift
Eight iceberg trajectories observed by the U.S. Coast Guard during 1965, 1967, and 1968 have been subjected to preliminary analysis. The data were obtained by tracking the icebergs relative to fixed reference markers using visual bearings and radar ranges. Speed ratios and drift angles were calculat...
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The Arctic Institute of North America
1974
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Online Access: | https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65915 |
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ftunivcalgaryojs:oai:journalhosting.ucalgary.ca:article/65915 2023-05-15T14:19:19+02:00 Statistical Analysis of Observed Iceberg Drift Ettle, Robert Erwin 1974-01-01 application/pdf https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65915 eng eng The Arctic Institute of North America https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65915/49829 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65915 ARCTIC; Vol. 27 No. 2 (1974): June: 89–164; 121-127 1923-1245 0004-0843 Detection Icebergs Movement Ocean currents Winds North Atlantic Ocean info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research-article 1974 ftunivcalgaryojs 2022-03-22T21:22:54Z Eight iceberg trajectories observed by the U.S. Coast Guard during 1965, 1967, and 1968 have been subjected to preliminary analysis. The data were obtained by tracking the icebergs relative to fixed reference markers using visual bearings and radar ranges. Speed ratios and drift angles were calculated for each half hour of iceberg trajectory. It was found that at low wind speeds the effects of permanent currents, older wind-driven currents, and tidal currents predominate over wind drag and new wind-driven currents, whereas at wind speeds of over 10 knots the wind has a significant effect on the drift of an iceberg. The ratio of the drag coefficient for the iceberg's above-water portion to the drag coefficient for its submerged portion was found to range from 1.5 to approximately 7. Article in Journal/Newspaper Arctic North Atlantic University of Calgary Journal Hosting ARCTIC 27 2 |
institution |
Open Polar |
collection |
University of Calgary Journal Hosting |
op_collection_id |
ftunivcalgaryojs |
language |
English |
topic |
Detection Icebergs Movement Ocean currents Winds North Atlantic Ocean |
spellingShingle |
Detection Icebergs Movement Ocean currents Winds North Atlantic Ocean Ettle, Robert Erwin Statistical Analysis of Observed Iceberg Drift |
topic_facet |
Detection Icebergs Movement Ocean currents Winds North Atlantic Ocean |
description |
Eight iceberg trajectories observed by the U.S. Coast Guard during 1965, 1967, and 1968 have been subjected to preliminary analysis. The data were obtained by tracking the icebergs relative to fixed reference markers using visual bearings and radar ranges. Speed ratios and drift angles were calculated for each half hour of iceberg trajectory. It was found that at low wind speeds the effects of permanent currents, older wind-driven currents, and tidal currents predominate over wind drag and new wind-driven currents, whereas at wind speeds of over 10 knots the wind has a significant effect on the drift of an iceberg. The ratio of the drag coefficient for the iceberg's above-water portion to the drag coefficient for its submerged portion was found to range from 1.5 to approximately 7. |
format |
Article in Journal/Newspaper |
author |
Ettle, Robert Erwin |
author_facet |
Ettle, Robert Erwin |
author_sort |
Ettle, Robert Erwin |
title |
Statistical Analysis of Observed Iceberg Drift |
title_short |
Statistical Analysis of Observed Iceberg Drift |
title_full |
Statistical Analysis of Observed Iceberg Drift |
title_fullStr |
Statistical Analysis of Observed Iceberg Drift |
title_full_unstemmed |
Statistical Analysis of Observed Iceberg Drift |
title_sort |
statistical analysis of observed iceberg drift |
publisher |
The Arctic Institute of North America |
publishDate |
1974 |
url |
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65915 |
genre |
Arctic North Atlantic |
genre_facet |
Arctic North Atlantic |
op_source |
ARCTIC; Vol. 27 No. 2 (1974): June: 89–164; 121-127 1923-1245 0004-0843 |
op_relation |
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65915/49829 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65915 |
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ARCTIC |
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27 |
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2 |
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1766290992716054528 |