Iceberg production and characteristics around the Prince of Wales Icefield, Ellesmere Island, 1997-2015
Since the 1960s, warming air and sea surface temperatures have led to decreasing sea ice extent and longer periods of open water in the Canadian Arctic Archipelago (CAA), together with changes in glacier discharge patterns. An important question, therefore, is whether there is a relationship between...
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/10.1080/15230430.2019.1634442 https://doaj.org/article/dba171902d044d51acf928b5dc8b352d |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:dba171902d044d51acf928b5dc8b352d 2023-05-15T14:14:22+02:00 Iceberg production and characteristics around the Prince of Wales Icefield, Ellesmere Island, 1997-2015 Abigail Dalton Luke Copland Adrienne Tivy Wesley Van Wychen Alison Cook 2019-01-01 https://doi.org/10.1080/15230430.2019.1634442 https://doaj.org/article/dba171902d044d51acf928b5dc8b352d en eng Taylor & Francis Group 1523-0430 1938-4246 doi:10.1080/15230430.2019.1634442 https://doaj.org/article/dba171902d044d51acf928b5dc8b352d undefined Arctic, Antarctic, and Alpine Research, Vol 51, Iss 1, Pp 412-427 (2019) canadian arctic glacier dynamics iceberg production sea ice conditions synthetic aperture radar geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2019 fttriple https://doi.org/10.1080/15230430.2019.1634442 2023-01-22T19:15:34Z Since the 1960s, warming air and sea surface temperatures have led to decreasing sea ice extent and longer periods of open water in the Canadian Arctic Archipelago (CAA), together with changes in glacier discharge patterns. An important question, therefore, is whether there is a relationship between changing sea ice conditions, glacier dynamics, and iceberg production in this region. Using synthetic aperture radar (SAR) (Radarsat-1, Radarsat-2, and ALOS PALSAR) and optical (Landsat 7 and 8) satellite imagery, iceberg plume events and sea ice break-up/freeze-up dates between 1997 and 2015 are investigated for 40 tidewater glaciers around the Prince of Wales (POW) Icefield, Ellesmere Island. Results show a clear relationship between the presence of sea ice and the production of icebergs, with ~49% of total iceberg plume events occurring during the 3–4 month long summer open water season and ~51% of events when sea ice was present the remaining 8–9 months of the year. There is no clear evidence of recent increases in iceberg production on a regional basis, but on a local, individual glacier scale there has been a connection between periods of increased iceberg plume events and: (a) acceleration in the surface velocity of Trinity and Wykeham glaciers; (b) increase in terminus retreat rates for glaciers which have not accelerated in flow speed over the past ~5–10 years. Comparisons with ocean temperature, surface air temperature from NCEP-NCAR reanalysis, and tidal data showed no clear relationship with iceberg plume events. Article in Journal/Newspaper Antarctic and Alpine Research Arctic Arctic Archipelago Arctic Canadian Arctic Archipelago Ellesmere Island Iceberg* Sea ice Tidewater Unknown Arctic Canadian Arctic Archipelago Ellesmere Island Prince of Wales Icefield ENVELOPE(-78.998,-78.998,78.252,78.252) Arctic, Antarctic, and Alpine Research 51 1 412 427 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
canadian arctic glacier dynamics iceberg production sea ice conditions synthetic aperture radar geo envir |
spellingShingle |
canadian arctic glacier dynamics iceberg production sea ice conditions synthetic aperture radar geo envir Abigail Dalton Luke Copland Adrienne Tivy Wesley Van Wychen Alison Cook Iceberg production and characteristics around the Prince of Wales Icefield, Ellesmere Island, 1997-2015 |
topic_facet |
canadian arctic glacier dynamics iceberg production sea ice conditions synthetic aperture radar geo envir |
description |
Since the 1960s, warming air and sea surface temperatures have led to decreasing sea ice extent and longer periods of open water in the Canadian Arctic Archipelago (CAA), together with changes in glacier discharge patterns. An important question, therefore, is whether there is a relationship between changing sea ice conditions, glacier dynamics, and iceberg production in this region. Using synthetic aperture radar (SAR) (Radarsat-1, Radarsat-2, and ALOS PALSAR) and optical (Landsat 7 and 8) satellite imagery, iceberg plume events and sea ice break-up/freeze-up dates between 1997 and 2015 are investigated for 40 tidewater glaciers around the Prince of Wales (POW) Icefield, Ellesmere Island. Results show a clear relationship between the presence of sea ice and the production of icebergs, with ~49% of total iceberg plume events occurring during the 3–4 month long summer open water season and ~51% of events when sea ice was present the remaining 8–9 months of the year. There is no clear evidence of recent increases in iceberg production on a regional basis, but on a local, individual glacier scale there has been a connection between periods of increased iceberg plume events and: (a) acceleration in the surface velocity of Trinity and Wykeham glaciers; (b) increase in terminus retreat rates for glaciers which have not accelerated in flow speed over the past ~5–10 years. Comparisons with ocean temperature, surface air temperature from NCEP-NCAR reanalysis, and tidal data showed no clear relationship with iceberg plume events. |
format |
Article in Journal/Newspaper |
author |
Abigail Dalton Luke Copland Adrienne Tivy Wesley Van Wychen Alison Cook |
author_facet |
Abigail Dalton Luke Copland Adrienne Tivy Wesley Van Wychen Alison Cook |
author_sort |
Abigail Dalton |
title |
Iceberg production and characteristics around the Prince of Wales Icefield, Ellesmere Island, 1997-2015 |
title_short |
Iceberg production and characteristics around the Prince of Wales Icefield, Ellesmere Island, 1997-2015 |
title_full |
Iceberg production and characteristics around the Prince of Wales Icefield, Ellesmere Island, 1997-2015 |
title_fullStr |
Iceberg production and characteristics around the Prince of Wales Icefield, Ellesmere Island, 1997-2015 |
title_full_unstemmed |
Iceberg production and characteristics around the Prince of Wales Icefield, Ellesmere Island, 1997-2015 |
title_sort |
iceberg production and characteristics around the prince of wales icefield, ellesmere island, 1997-2015 |
publisher |
Taylor & Francis Group |
publishDate |
2019 |
url |
https://doi.org/10.1080/15230430.2019.1634442 https://doaj.org/article/dba171902d044d51acf928b5dc8b352d |
long_lat |
ENVELOPE(-78.998,-78.998,78.252,78.252) |
geographic |
Arctic Canadian Arctic Archipelago Ellesmere Island Prince of Wales Icefield |
geographic_facet |
Arctic Canadian Arctic Archipelago Ellesmere Island Prince of Wales Icefield |
genre |
Antarctic and Alpine Research Arctic Arctic Archipelago Arctic Canadian Arctic Archipelago Ellesmere Island Iceberg* Sea ice Tidewater |
genre_facet |
Antarctic and Alpine Research Arctic Arctic Archipelago Arctic Canadian Arctic Archipelago Ellesmere Island Iceberg* Sea ice Tidewater |
op_source |
Arctic, Antarctic, and Alpine Research, Vol 51, Iss 1, Pp 412-427 (2019) |
op_relation |
1523-0430 1938-4246 doi:10.1080/15230430.2019.1634442 https://doaj.org/article/dba171902d044d51acf928b5dc8b352d |
op_rights |
undefined |
op_doi |
https://doi.org/10.1080/15230430.2019.1634442 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
51 |
container_issue |
1 |
container_start_page |
412 |
op_container_end_page |
427 |
_version_ |
1766286871598465024 |