Tracking Holocene drift-ice limits on the northwest–southwest Iceland shelf: Comparing proxy data with observation and historical evidence
We detail variations in the weight percent (wt%) of quartz, a proxy for drift ice, in fifteen marine sediment cores from the northwest, west, and southwest Iceland shelf throughout the past 10 cal ka BP. We present the first map of iceberg distributions in Iceland waters between 1983 and 2011 and a...
Published in: | Arctic, Antarctic, and Alpine Research |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Taylor & Francis Group
2019
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Online Access: | https://doi.org/10.1080/15230430.2019.1592648 https://doaj.org/article/13582d04e06b4c81999f2f4f124bdc1d |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:13582d04e06b4c81999f2f4f124bdc1d 2023-05-15T14:14:25+02:00 Tracking Holocene drift-ice limits on the northwest–southwest Iceland shelf: Comparing proxy data with observation and historical evidence John T. Andrews Ingibjörg Jónsdóttir Áslaug Geirsdóttir 2019-01-01 https://doi.org/10.1080/15230430.2019.1592648 https://doaj.org/article/13582d04e06b4c81999f2f4f124bdc1d en eng Taylor & Francis Group 1523-0430 1938-4246 doi:10.1080/15230430.2019.1592648 https://doaj.org/article/13582d04e06b4c81999f2f4f124bdc1d undefined Arctic, Antarctic, and Alpine Research, Vol 51, Iss 1, Pp 96-114 (2019) iceland sea ice icebergs drift ice quartz weight percent holocene geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2019 fttriple https://doi.org/10.1080/15230430.2019.1592648 2023-01-22T19:12:02Z We detail variations in the weight percent (wt%) of quartz, a proxy for drift ice, in fifteen marine sediment cores from the northwest, west, and southwest Iceland shelf throughout the past 10 cal ka BP. We present the first map of iceberg distributions in Iceland waters between 1983 and 2011 and a new compilation of sea-ice records in the century from 850 to 1950 CE. The wt% of quartz, determined by quantitative X-ray diffraction (qXRD) analysis, is used to evaluate changes in the importation of drift ice. Small wt% of quartz were added to milled basalt (0% quartz), and to a mixture of non-clay and clay minerals; the qXRD method replicated 0 percent quartz, while measured 1–3 percent quartz always resulted in a “presence” estimate. The outer sites in the northwest sector lie close to the average position of the sea-ice margin between 1870 and 1920 CE; the southwest shelf sites lie south of this limit. Transects of cores along the Húnaflói and Djúpáll troughs indicate that the traces of drift ice decrease rapidly landward from the outer sites. The cores from the west/southwest of Iceland have limited amounts of quartz, generally possibly limited incursions of drift ice. Article in Journal/Newspaper Antarctic and Alpine Research Arctic Iceland Sea ice Unknown Djúpáll ENVELOPE(-23.617,-23.617,66.400,66.400) Húnaflói ENVELOPE(-20.864,-20.864,65.746,65.746) Arctic, Antarctic, and Alpine Research 51 1 96 114 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
iceland sea ice icebergs drift ice quartz weight percent holocene geo |
spellingShingle |
iceland sea ice icebergs drift ice quartz weight percent holocene geo John T. Andrews Ingibjörg Jónsdóttir Áslaug Geirsdóttir Tracking Holocene drift-ice limits on the northwest–southwest Iceland shelf: Comparing proxy data with observation and historical evidence |
topic_facet |
iceland sea ice icebergs drift ice quartz weight percent holocene geo |
description |
We detail variations in the weight percent (wt%) of quartz, a proxy for drift ice, in fifteen marine sediment cores from the northwest, west, and southwest Iceland shelf throughout the past 10 cal ka BP. We present the first map of iceberg distributions in Iceland waters between 1983 and 2011 and a new compilation of sea-ice records in the century from 850 to 1950 CE. The wt% of quartz, determined by quantitative X-ray diffraction (qXRD) analysis, is used to evaluate changes in the importation of drift ice. Small wt% of quartz were added to milled basalt (0% quartz), and to a mixture of non-clay and clay minerals; the qXRD method replicated 0 percent quartz, while measured 1–3 percent quartz always resulted in a “presence” estimate. The outer sites in the northwest sector lie close to the average position of the sea-ice margin between 1870 and 1920 CE; the southwest shelf sites lie south of this limit. Transects of cores along the Húnaflói and Djúpáll troughs indicate that the traces of drift ice decrease rapidly landward from the outer sites. The cores from the west/southwest of Iceland have limited amounts of quartz, generally possibly limited incursions of drift ice. |
format |
Article in Journal/Newspaper |
author |
John T. Andrews Ingibjörg Jónsdóttir Áslaug Geirsdóttir |
author_facet |
John T. Andrews Ingibjörg Jónsdóttir Áslaug Geirsdóttir |
author_sort |
John T. Andrews |
title |
Tracking Holocene drift-ice limits on the northwest–southwest Iceland shelf: Comparing proxy data with observation and historical evidence |
title_short |
Tracking Holocene drift-ice limits on the northwest–southwest Iceland shelf: Comparing proxy data with observation and historical evidence |
title_full |
Tracking Holocene drift-ice limits on the northwest–southwest Iceland shelf: Comparing proxy data with observation and historical evidence |
title_fullStr |
Tracking Holocene drift-ice limits on the northwest–southwest Iceland shelf: Comparing proxy data with observation and historical evidence |
title_full_unstemmed |
Tracking Holocene drift-ice limits on the northwest–southwest Iceland shelf: Comparing proxy data with observation and historical evidence |
title_sort |
tracking holocene drift-ice limits on the northwest–southwest iceland shelf: comparing proxy data with observation and historical evidence |
publisher |
Taylor & Francis Group |
publishDate |
2019 |
url |
https://doi.org/10.1080/15230430.2019.1592648 https://doaj.org/article/13582d04e06b4c81999f2f4f124bdc1d |
long_lat |
ENVELOPE(-23.617,-23.617,66.400,66.400) ENVELOPE(-20.864,-20.864,65.746,65.746) |
geographic |
Djúpáll Húnaflói |
geographic_facet |
Djúpáll Húnaflói |
genre |
Antarctic and Alpine Research Arctic Iceland Sea ice |
genre_facet |
Antarctic and Alpine Research Arctic Iceland Sea ice |
op_source |
Arctic, Antarctic, and Alpine Research, Vol 51, Iss 1, Pp 96-114 (2019) |
op_relation |
1523-0430 1938-4246 doi:10.1080/15230430.2019.1592648 https://doaj.org/article/13582d04e06b4c81999f2f4f124bdc1d |
op_rights |
undefined |
op_doi |
https://doi.org/10.1080/15230430.2019.1592648 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
51 |
container_issue |
1 |
container_start_page |
96 |
op_container_end_page |
114 |
_version_ |
1766286888880046080 |