Calving Fronts of Antarctica: Mapping and Classification
Antarctica is surrounded by a variety of large, medium and small sized ice shelves, glacier tongues and coastal areas without offshore floating ice masses. We used the mosaic of the Radarsat-1 Antarctica Mapping Project (RAMP) Antarctic Mapping Mission 1 (AMM) to classify the coastline of Antarctica...
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ftdoajarticles:oai:doaj.org/article:7a3f819ed1894c9ab6ae1b89631662ee 2023-05-15T14:04:22+02:00 Calving Fronts of Antarctica: Mapping and Classification Christine Wesche Daniela Jansen Wolfgang Dierking 2013-11-01T00:00:00Z https://doi.org/10.3390/rs5126305 https://doaj.org/article/7a3f819ed1894c9ab6ae1b89631662ee EN eng MDPI AG http://www.mdpi.com/2072-4292/5/12/6305 https://doaj.org/toc/2072-4292 2072-4292 doi:10.3390/rs5126305 https://doaj.org/article/7a3f819ed1894c9ab6ae1b89631662ee Remote Sensing, Vol 5, Iss 12, Pp 6305-6322 (2013) ice shelf edge detection SAR icebergs Science Q article 2013 ftdoajarticles https://doi.org/10.3390/rs5126305 2022-12-30T20:28:47Z Antarctica is surrounded by a variety of large, medium and small sized ice shelves, glacier tongues and coastal areas without offshore floating ice masses. We used the mosaic of the Radarsat-1 Antarctica Mapping Project (RAMP) Antarctic Mapping Mission 1 (AMM) to classify the coastline of Antarctica in terms of surface structure patterns close to the calving front. With the aid of an automated edge detection method, complemented by manual control, the surface structures of all ice shelves and glacier tongues around Antarctica were mapped. We found dense and less dense patterns of surface structures unevenly distributed over the ice shelves and ice tongues. Dense surface patterns are frequent on fast flowing ice masses (ice streams), whereas most ice shelves show a dense surface pattern only close to the grounding line. Flow line analyses on ten ice shelves reveal that the time of residence of the ice along a flow path and—associated with it—the healing of surface crevasses can explain the different surface structure distribution close to the grounding line and the calving front on many ice shelves. Based on the surface structures relative to the calving front within a 15 km-wide seaward strip, the ice shelf fronts can be separated into three classes. The resulting map of the classified calving fronts around Antarctica and their description provide a detailed picture of crevasse formation and the observed dominant iceberg shapes. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Shelf Ice Shelves Iceberg* Directory of Open Access Journals: DOAJ Articles Antarctic Remote Sensing 5 12 6305 6322 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
ice shelf edge detection SAR icebergs Science Q |
spellingShingle |
ice shelf edge detection SAR icebergs Science Q Christine Wesche Daniela Jansen Wolfgang Dierking Calving Fronts of Antarctica: Mapping and Classification |
topic_facet |
ice shelf edge detection SAR icebergs Science Q |
description |
Antarctica is surrounded by a variety of large, medium and small sized ice shelves, glacier tongues and coastal areas without offshore floating ice masses. We used the mosaic of the Radarsat-1 Antarctica Mapping Project (RAMP) Antarctic Mapping Mission 1 (AMM) to classify the coastline of Antarctica in terms of surface structure patterns close to the calving front. With the aid of an automated edge detection method, complemented by manual control, the surface structures of all ice shelves and glacier tongues around Antarctica were mapped. We found dense and less dense patterns of surface structures unevenly distributed over the ice shelves and ice tongues. Dense surface patterns are frequent on fast flowing ice masses (ice streams), whereas most ice shelves show a dense surface pattern only close to the grounding line. Flow line analyses on ten ice shelves reveal that the time of residence of the ice along a flow path and—associated with it—the healing of surface crevasses can explain the different surface structure distribution close to the grounding line and the calving front on many ice shelves. Based on the surface structures relative to the calving front within a 15 km-wide seaward strip, the ice shelf fronts can be separated into three classes. The resulting map of the classified calving fronts around Antarctica and their description provide a detailed picture of crevasse formation and the observed dominant iceberg shapes. |
format |
Article in Journal/Newspaper |
author |
Christine Wesche Daniela Jansen Wolfgang Dierking |
author_facet |
Christine Wesche Daniela Jansen Wolfgang Dierking |
author_sort |
Christine Wesche |
title |
Calving Fronts of Antarctica: Mapping and Classification |
title_short |
Calving Fronts of Antarctica: Mapping and Classification |
title_full |
Calving Fronts of Antarctica: Mapping and Classification |
title_fullStr |
Calving Fronts of Antarctica: Mapping and Classification |
title_full_unstemmed |
Calving Fronts of Antarctica: Mapping and Classification |
title_sort |
calving fronts of antarctica: mapping and classification |
publisher |
MDPI AG |
publishDate |
2013 |
url |
https://doi.org/10.3390/rs5126305 https://doaj.org/article/7a3f819ed1894c9ab6ae1b89631662ee |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Shelf Ice Shelves Iceberg* |
genre_facet |
Antarc* Antarctic Antarctica Ice Shelf Ice Shelves Iceberg* |
op_source |
Remote Sensing, Vol 5, Iss 12, Pp 6305-6322 (2013) |
op_relation |
http://www.mdpi.com/2072-4292/5/12/6305 https://doaj.org/toc/2072-4292 2072-4292 doi:10.3390/rs5126305 https://doaj.org/article/7a3f819ed1894c9ab6ae1b89631662ee |
op_doi |
https://doi.org/10.3390/rs5126305 |
container_title |
Remote Sensing |
container_volume |
5 |
container_issue |
12 |
container_start_page |
6305 |
op_container_end_page |
6322 |
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1766275408335994880 |