Antarctic iceberg distribution revealed through three decades of systematic ship-based observations in the SCAR International Iceberg Database
In 1981, the Scientific Committee on Antarctic Research endorsed a program for ship-based collection of Antarctic iceberg data, to be coordinated by the Norwegian Polar Institute (NPI). From the austral summers 1982/1983 to 1997/1998, icebergs were recorded from most, and up to 2009/10 by fewer rese...
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Cambridge University Press
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ftdoajarticles:oai:doaj.org/article:27fbafd1e1b24effae82a1efb383d0b3 2023-06-11T04:07:14+02:00 Antarctic iceberg distribution revealed through three decades of systematic ship-based observations in the SCAR International Iceberg Database Olav Orheim A. Barry Giles Geir Moholdt T. H. (Jo) Jacka Are Bjørdal 2023-06-01T00:00:00Z https://doi.org/10.1017/jog.2022.84 https://doaj.org/article/27fbafd1e1b24effae82a1efb383d0b3 EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0022143022000843/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2022.84 0022-1430 1727-5652 https://doaj.org/article/27fbafd1e1b24effae82a1efb383d0b3 Journal of Glaciology, Vol 69, Pp 551-565 (2023) Icebergs Antarctica Database Southern Ocean Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2023 ftdoajarticles https://doi.org/10.1017/jog.2022.84 2023-05-28T00:37:02Z In 1981, the Scientific Committee on Antarctic Research endorsed a program for ship-based collection of Antarctic iceberg data, to be coordinated by the Norwegian Polar Institute (NPI). From the austral summers 1982/1983 to 1997/1998, icebergs were recorded from most, and up to 2009/10 by fewer research vessels. The NPI database makes up 80% of the SCAR International Iceberg Database presented here, the remainder being Australian National Antarctic Research Expedition observations. The database contains positions of 374 142 icebergs resulting from 34 662 observations. Within these, 298 235 icebergs are classified into different size categories. The ship-based data are particularly useful because they include systematic observations of smaller icebergs not covered by current satellite-based datasets. Here, we assess regional and seasonal variations in iceberg density and total quantities, we identify drift patterns and exit zones from the continent, and we discuss iceberg dissolution rates and calving rates. There are significant differences in the extent of icebergs observed over the 30 plus years of observations, but much of these can be ascribed to differences in observation density and location. In the summer, Antarctic icebergs >10 m in length number ~130 000 of which 1000 are found north of the Southern Ocean boundary. Article in Journal/Newspaper Antarc* Antarctic Antarctica Iceberg* Journal of Glaciology Norwegian Polar Institute SCAR Scientific Committee on Antarctic Research Southern Ocean Directory of Open Access Journals: DOAJ Articles Antarctic Austral Southern Ocean Journal of Glaciology 1 15 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Icebergs Antarctica Database Southern Ocean Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
Icebergs Antarctica Database Southern Ocean Environmental sciences GE1-350 Meteorology. Climatology QC851-999 Olav Orheim A. Barry Giles Geir Moholdt T. H. (Jo) Jacka Are Bjørdal Antarctic iceberg distribution revealed through three decades of systematic ship-based observations in the SCAR International Iceberg Database |
topic_facet |
Icebergs Antarctica Database Southern Ocean Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
In 1981, the Scientific Committee on Antarctic Research endorsed a program for ship-based collection of Antarctic iceberg data, to be coordinated by the Norwegian Polar Institute (NPI). From the austral summers 1982/1983 to 1997/1998, icebergs were recorded from most, and up to 2009/10 by fewer research vessels. The NPI database makes up 80% of the SCAR International Iceberg Database presented here, the remainder being Australian National Antarctic Research Expedition observations. The database contains positions of 374 142 icebergs resulting from 34 662 observations. Within these, 298 235 icebergs are classified into different size categories. The ship-based data are particularly useful because they include systematic observations of smaller icebergs not covered by current satellite-based datasets. Here, we assess regional and seasonal variations in iceberg density and total quantities, we identify drift patterns and exit zones from the continent, and we discuss iceberg dissolution rates and calving rates. There are significant differences in the extent of icebergs observed over the 30 plus years of observations, but much of these can be ascribed to differences in observation density and location. In the summer, Antarctic icebergs >10 m in length number ~130 000 of which 1000 are found north of the Southern Ocean boundary. |
format |
Article in Journal/Newspaper |
author |
Olav Orheim A. Barry Giles Geir Moholdt T. H. (Jo) Jacka Are Bjørdal |
author_facet |
Olav Orheim A. Barry Giles Geir Moholdt T. H. (Jo) Jacka Are Bjørdal |
author_sort |
Olav Orheim |
title |
Antarctic iceberg distribution revealed through three decades of systematic ship-based observations in the SCAR International Iceberg Database |
title_short |
Antarctic iceberg distribution revealed through three decades of systematic ship-based observations in the SCAR International Iceberg Database |
title_full |
Antarctic iceberg distribution revealed through three decades of systematic ship-based observations in the SCAR International Iceberg Database |
title_fullStr |
Antarctic iceberg distribution revealed through three decades of systematic ship-based observations in the SCAR International Iceberg Database |
title_full_unstemmed |
Antarctic iceberg distribution revealed through three decades of systematic ship-based observations in the SCAR International Iceberg Database |
title_sort |
antarctic iceberg distribution revealed through three decades of systematic ship-based observations in the scar international iceberg database |
publisher |
Cambridge University Press |
publishDate |
2023 |
url |
https://doi.org/10.1017/jog.2022.84 https://doaj.org/article/27fbafd1e1b24effae82a1efb383d0b3 |
geographic |
Antarctic Austral Southern Ocean |
geographic_facet |
Antarctic Austral Southern Ocean |
genre |
Antarc* Antarctic Antarctica Iceberg* Journal of Glaciology Norwegian Polar Institute SCAR Scientific Committee on Antarctic Research Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Iceberg* Journal of Glaciology Norwegian Polar Institute SCAR Scientific Committee on Antarctic Research Southern Ocean |
op_source |
Journal of Glaciology, Vol 69, Pp 551-565 (2023) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0022143022000843/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2022.84 0022-1430 1727-5652 https://doaj.org/article/27fbafd1e1b24effae82a1efb383d0b3 |
op_doi |
https://doi.org/10.1017/jog.2022.84 |
container_title |
Journal of Glaciology |
container_start_page |
1 |
op_container_end_page |
15 |
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1768380192592494592 |