Drift, drag and deterioration: mapping the fate of large ice hazards
Floating ice hazards are a risk to safe navigation in both the Arctic and the Southern Ocean as a result of changing ice conditions and increased marine traffic in recent years. These hazards include icebergs and ice islands (a type of iceberg in the Arctic that is tabular in shape and up to several...
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ftunivtasecite:oai:ecite.utas.edu.au:113583 2023-05-15T14:48:21+02:00 Drift, drag and deterioration: mapping the fate of large ice hazards Forrest, A Mueller, D Laval, B Hamilton, A Bowden-Floyd, I King, P Guihen, D Lucieer, V 2016 application/pdf http://ecite.utas.edu.au/113583 en eng . http://ecite.utas.edu.au/113583/1/KOPRI_Abstract_Lucieer_2016.pdf Forrest, A and Mueller, D and Laval, B and Hamilton, A and Bowden-Floyd, I and King, P and Guihen, D and Lucieer, V, Drift, drag and deterioration: mapping the fate of large ice hazards, The 22nd International Symposium on Polar Sciences (ISPS) abstracts, 10-11 May, Korea Polar Research Institute, Incheon, Republic (2016) [Conference Extract] http://ecite.utas.edu.au/113583 Engineering Geomatic Engineering Surveying (incl. Hydrographic Surveying) Conference Extract NonPeerReviewed 2016 ftunivtasecite 2019-12-13T22:13:39Z Floating ice hazards are a risk to safe navigation in both the Arctic and the Southern Ocean as a result of changing ice conditions and increased marine traffic in recent years. These hazards include icebergs and ice islands (a type of iceberg in the Arctic that is tabular in shape and up to several km in length). Under the influence of climate change, calving (break-off) rates of tidewater glaciers, floating glacier tongues and ice shelves, the source of icebergs and ice islands, appear to be increasing, particularly in the Arctic. Understanding the drift and deterioration of these ice features is a key challenge to the ice community and tends to be limited by a paucity of observational data from around Newfoundland and Labrador, where water temperatures are significantly warmer and interaction with sea ice is less common than in Arctic waters. Observations of drifting ice islands that calved from the Petermann Glacier in NW Greenland were attempted in 2011 in the Canadian High Arctic (69-75N) to examine draft, surface roughness and basal features using an Autonomous Underwater Vehicle (AUV) to help improve numerical ice hazard drift models. The AUV was successfully deployed under a grounded ice island, yet key challenges for future deployments involve mapping ice that is both drifting and rotating. Acoustic localization, combined with terrain-relative navigation, is proposed to deal with this motion, enabling accurate in situ measurements of the underside and sidewalls of the ice. This data is required to help understand the drift, deterioration and ultimate fate of these ice hazards in a changing global climate. Conference Object Arctic Climate change glacier Greenland Ice Shelves Iceberg* Newfoundland Petermann glacier Polar Research Sea ice Southern Ocean Tidewater eCite UTAS (University of Tasmania) Arctic Greenland Newfoundland Southern Ocean |
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Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Engineering Geomatic Engineering Surveying (incl. Hydrographic Surveying) |
spellingShingle |
Engineering Geomatic Engineering Surveying (incl. Hydrographic Surveying) Forrest, A Mueller, D Laval, B Hamilton, A Bowden-Floyd, I King, P Guihen, D Lucieer, V Drift, drag and deterioration: mapping the fate of large ice hazards |
topic_facet |
Engineering Geomatic Engineering Surveying (incl. Hydrographic Surveying) |
description |
Floating ice hazards are a risk to safe navigation in both the Arctic and the Southern Ocean as a result of changing ice conditions and increased marine traffic in recent years. These hazards include icebergs and ice islands (a type of iceberg in the Arctic that is tabular in shape and up to several km in length). Under the influence of climate change, calving (break-off) rates of tidewater glaciers, floating glacier tongues and ice shelves, the source of icebergs and ice islands, appear to be increasing, particularly in the Arctic. Understanding the drift and deterioration of these ice features is a key challenge to the ice community and tends to be limited by a paucity of observational data from around Newfoundland and Labrador, where water temperatures are significantly warmer and interaction with sea ice is less common than in Arctic waters. Observations of drifting ice islands that calved from the Petermann Glacier in NW Greenland were attempted in 2011 in the Canadian High Arctic (69-75N) to examine draft, surface roughness and basal features using an Autonomous Underwater Vehicle (AUV) to help improve numerical ice hazard drift models. The AUV was successfully deployed under a grounded ice island, yet key challenges for future deployments involve mapping ice that is both drifting and rotating. Acoustic localization, combined with terrain-relative navigation, is proposed to deal with this motion, enabling accurate in situ measurements of the underside and sidewalls of the ice. This data is required to help understand the drift, deterioration and ultimate fate of these ice hazards in a changing global climate. |
format |
Conference Object |
author |
Forrest, A Mueller, D Laval, B Hamilton, A Bowden-Floyd, I King, P Guihen, D Lucieer, V |
author_facet |
Forrest, A Mueller, D Laval, B Hamilton, A Bowden-Floyd, I King, P Guihen, D Lucieer, V |
author_sort |
Forrest, A |
title |
Drift, drag and deterioration: mapping the fate of large ice hazards |
title_short |
Drift, drag and deterioration: mapping the fate of large ice hazards |
title_full |
Drift, drag and deterioration: mapping the fate of large ice hazards |
title_fullStr |
Drift, drag and deterioration: mapping the fate of large ice hazards |
title_full_unstemmed |
Drift, drag and deterioration: mapping the fate of large ice hazards |
title_sort |
drift, drag and deterioration: mapping the fate of large ice hazards |
publisher |
. |
publishDate |
2016 |
url |
http://ecite.utas.edu.au/113583 |
geographic |
Arctic Greenland Newfoundland Southern Ocean |
geographic_facet |
Arctic Greenland Newfoundland Southern Ocean |
genre |
Arctic Climate change glacier Greenland Ice Shelves Iceberg* Newfoundland Petermann glacier Polar Research Sea ice Southern Ocean Tidewater |
genre_facet |
Arctic Climate change glacier Greenland Ice Shelves Iceberg* Newfoundland Petermann glacier Polar Research Sea ice Southern Ocean Tidewater |
op_relation |
http://ecite.utas.edu.au/113583/1/KOPRI_Abstract_Lucieer_2016.pdf Forrest, A and Mueller, D and Laval, B and Hamilton, A and Bowden-Floyd, I and King, P and Guihen, D and Lucieer, V, Drift, drag and deterioration: mapping the fate of large ice hazards, The 22nd International Symposium on Polar Sciences (ISPS) abstracts, 10-11 May, Korea Polar Research Institute, Incheon, Republic (2016) [Conference Extract] http://ecite.utas.edu.au/113583 |
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1766319436463079424 |