Fine-Scale Sea Ice Structure Characterized Using Underwater Acoustic Methods
Antarctic sea ice is known to provide unique ecosystem habitat at the ice–ocean interface. Mapping sea ice characteristics—such as thickness and roughness—at high resolution from beneath the ice is difficult due to access. A Geoswath Plus phase-measuring bathymetric sonar mounted on an autonomous un...
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ftmdpi:oai:mdpi.com:/2072-4292/8/10/821/ 2023-08-20T04:02:12+02:00 Fine-Scale Sea Ice Structure Characterized Using Underwater Acoustic Methods Vanessa Lucieer Amy Nau Alexander Forrest Ian Hawes agris 2016-10-05 application/pdf https://doi.org/10.3390/rs8100821 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/rs8100821 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 8; Issue 10; Pages: 821 sea ice autonomous underwater vehicles multibeam acoustic data underwater acoustic processing methods Text 2016 ftmdpi https://doi.org/10.3390/rs8100821 2023-07-31T20:57:57Z Antarctic sea ice is known to provide unique ecosystem habitat at the ice–ocean interface. Mapping sea ice characteristics—such as thickness and roughness—at high resolution from beneath the ice is difficult due to access. A Geoswath Plus phase-measuring bathymetric sonar mounted on an autonomous underwater vehicle (AUV) was employed in this study to collect data underneath the sea ice at Cape Evans in Antarctica in November 2014. This study demonstrates how acoustic data can be collected and processed to resolutions of 1 m for acoustic bathymetry and 5 cm for acoustic backscatter in this challenging environment. Different ice textures such as platelet ice, smooth ice, and sea ice morphologies, ranging in size from 1 to 50 m were characterized. The acoustic techniques developed in this work could provide a key to understanding the distribution of sea ice communities, as they are nondisruptive to the fragile ice environments and provide geolocated data over large spatial extents. These results improve our understanding of sea ice properties and the complex, highly variable ecosystem that exists at this boundary. Text Antarc* Antarctic Antarctica Sea ice MDPI Open Access Publishing Antarctic Cape Evans ENVELOPE(161.550,161.550,-75.100,-75.100) Remote Sensing 8 10 821 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
sea ice autonomous underwater vehicles multibeam acoustic data underwater acoustic processing methods |
spellingShingle |
sea ice autonomous underwater vehicles multibeam acoustic data underwater acoustic processing methods Vanessa Lucieer Amy Nau Alexander Forrest Ian Hawes Fine-Scale Sea Ice Structure Characterized Using Underwater Acoustic Methods |
topic_facet |
sea ice autonomous underwater vehicles multibeam acoustic data underwater acoustic processing methods |
description |
Antarctic sea ice is known to provide unique ecosystem habitat at the ice–ocean interface. Mapping sea ice characteristics—such as thickness and roughness—at high resolution from beneath the ice is difficult due to access. A Geoswath Plus phase-measuring bathymetric sonar mounted on an autonomous underwater vehicle (AUV) was employed in this study to collect data underneath the sea ice at Cape Evans in Antarctica in November 2014. This study demonstrates how acoustic data can be collected and processed to resolutions of 1 m for acoustic bathymetry and 5 cm for acoustic backscatter in this challenging environment. Different ice textures such as platelet ice, smooth ice, and sea ice morphologies, ranging in size from 1 to 50 m were characterized. The acoustic techniques developed in this work could provide a key to understanding the distribution of sea ice communities, as they are nondisruptive to the fragile ice environments and provide geolocated data over large spatial extents. These results improve our understanding of sea ice properties and the complex, highly variable ecosystem that exists at this boundary. |
format |
Text |
author |
Vanessa Lucieer Amy Nau Alexander Forrest Ian Hawes |
author_facet |
Vanessa Lucieer Amy Nau Alexander Forrest Ian Hawes |
author_sort |
Vanessa Lucieer |
title |
Fine-Scale Sea Ice Structure Characterized Using Underwater Acoustic Methods |
title_short |
Fine-Scale Sea Ice Structure Characterized Using Underwater Acoustic Methods |
title_full |
Fine-Scale Sea Ice Structure Characterized Using Underwater Acoustic Methods |
title_fullStr |
Fine-Scale Sea Ice Structure Characterized Using Underwater Acoustic Methods |
title_full_unstemmed |
Fine-Scale Sea Ice Structure Characterized Using Underwater Acoustic Methods |
title_sort |
fine-scale sea ice structure characterized using underwater acoustic methods |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2016 |
url |
https://doi.org/10.3390/rs8100821 |
op_coverage |
agris |
long_lat |
ENVELOPE(161.550,161.550,-75.100,-75.100) |
geographic |
Antarctic Cape Evans |
geographic_facet |
Antarctic Cape Evans |
genre |
Antarc* Antarctic Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Sea ice |
op_source |
Remote Sensing; Volume 8; Issue 10; Pages: 821 |
op_relation |
https://dx.doi.org/10.3390/rs8100821 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs8100821 |
container_title |
Remote Sensing |
container_volume |
8 |
container_issue |
10 |
container_start_page |
821 |
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1774712584035893248 |