The effects of flowline length evolution on chemistry - δ18O profiles from Penny Ice Cap, Baffin Island, Canada
The isotopic and chemical signatures for ice-age and Holocene ice from Summit, Greenland, and Penny Ice Cap, Baffin Island, Canada, are compared. The usual pattern of low δ180, high Ca2+ and high Cl- is presented in the Summit records, but Penny Ice Cap has lower than present Cl- in its ice-age ice....
Published in: | Annals of Glaciology |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Geological Survey of Canada
2002
|
Subjects: | |
Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-300886 https://doi.org/10.3189/172756402781817257 |
id |
ftuppsalauniv:oai:DiVA.org:uu-300886 |
---|---|
record_format |
openpolar |
spelling |
ftuppsalauniv:oai:DiVA.org:uu-300886 2023-05-15T13:29:18+02:00 The effects of flowline length evolution on chemistry - δ18O profiles from Penny Ice Cap, Baffin Island, Canada Fisher, D. A. Koerner, R. M. Zielinski, G. A. Wake, C. P. Zdanowicz, Christian Bourgeois, J. C. Mayewski, P. A. Grummet, N. 2002 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-300886 https://doi.org/10.3189/172756402781817257 eng eng Geological Survey of Canada University of New Hampshire Annals of Glaciology, 0260-3055, 2002, 35:1, s. 150-156 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-300886 doi:10.3189/172756402781817257 ISI:000182023600026 Scopus 2-s2.0-0036968396 info:eu-repo/semantics/openAccess Ice cores aerosols Arctic Canada Laurentide Ice Sheet Penny Ice Cap Other Earth and Related Environmental Sciences Annan geovetenskap och miljövetenskap Article in journal info:eu-repo/semantics/article text 2002 ftuppsalauniv https://doi.org/10.3189/172756402781817257 2023-02-23T21:38:03Z The isotopic and chemical signatures for ice-age and Holocene ice from Summit, Greenland, and Penny Ice Cap, Baffin Island, Canada, are compared. The usual pattern of low δ180, high Ca2+ and high Cl- is presented in the Summit records, but Penny Ice Cap has lower than present Cl- in its ice-age ice. A simple extension of the Hansson model (Hansson, 1994) is developed and used to simulate these signatures. The low ice age Cl- from Penny Ice Cap is explained by having the ice-age ice originating many thousands of km inland near the centre of the Laurentide ice sheet and much further from the marine sources. Summit's flowlines all start close to the present site. The Penny Ice Cap early-Holocene δ180's had to be corrected to offset the Laurentide meltwater distortion.The analysis suggests that presently the Summit and Penny Ice Cap marine impurity ori ginates about 500 km away, and that presently Penny Ice Cap receives a significant amountoflocal continental impurity. Article in Journal/Newspaper Annals of Glaciology Arctic Baffin Island Baffin Greenland Ice cap Ice Sheet Penny Ice Cap Uppsala University: Publications (DiVA) Arctic Baffin Island Canada Greenland Penny Ice Cap ENVELOPE(-66.214,-66.214,67.284,67.284) Annals of Glaciology 35 150 156 |
institution |
Open Polar |
collection |
Uppsala University: Publications (DiVA) |
op_collection_id |
ftuppsalauniv |
language |
English |
topic |
Ice cores aerosols Arctic Canada Laurentide Ice Sheet Penny Ice Cap Other Earth and Related Environmental Sciences Annan geovetenskap och miljövetenskap |
spellingShingle |
Ice cores aerosols Arctic Canada Laurentide Ice Sheet Penny Ice Cap Other Earth and Related Environmental Sciences Annan geovetenskap och miljövetenskap Fisher, D. A. Koerner, R. M. Zielinski, G. A. Wake, C. P. Zdanowicz, Christian Bourgeois, J. C. Mayewski, P. A. Grummet, N. The effects of flowline length evolution on chemistry - δ18O profiles from Penny Ice Cap, Baffin Island, Canada |
topic_facet |
Ice cores aerosols Arctic Canada Laurentide Ice Sheet Penny Ice Cap Other Earth and Related Environmental Sciences Annan geovetenskap och miljövetenskap |
description |
The isotopic and chemical signatures for ice-age and Holocene ice from Summit, Greenland, and Penny Ice Cap, Baffin Island, Canada, are compared. The usual pattern of low δ180, high Ca2+ and high Cl- is presented in the Summit records, but Penny Ice Cap has lower than present Cl- in its ice-age ice. A simple extension of the Hansson model (Hansson, 1994) is developed and used to simulate these signatures. The low ice age Cl- from Penny Ice Cap is explained by having the ice-age ice originating many thousands of km inland near the centre of the Laurentide ice sheet and much further from the marine sources. Summit's flowlines all start close to the present site. The Penny Ice Cap early-Holocene δ180's had to be corrected to offset the Laurentide meltwater distortion.The analysis suggests that presently the Summit and Penny Ice Cap marine impurity ori ginates about 500 km away, and that presently Penny Ice Cap receives a significant amountoflocal continental impurity. |
format |
Article in Journal/Newspaper |
author |
Fisher, D. A. Koerner, R. M. Zielinski, G. A. Wake, C. P. Zdanowicz, Christian Bourgeois, J. C. Mayewski, P. A. Grummet, N. |
author_facet |
Fisher, D. A. Koerner, R. M. Zielinski, G. A. Wake, C. P. Zdanowicz, Christian Bourgeois, J. C. Mayewski, P. A. Grummet, N. |
author_sort |
Fisher, D. A. |
title |
The effects of flowline length evolution on chemistry - δ18O profiles from Penny Ice Cap, Baffin Island, Canada |
title_short |
The effects of flowline length evolution on chemistry - δ18O profiles from Penny Ice Cap, Baffin Island, Canada |
title_full |
The effects of flowline length evolution on chemistry - δ18O profiles from Penny Ice Cap, Baffin Island, Canada |
title_fullStr |
The effects of flowline length evolution on chemistry - δ18O profiles from Penny Ice Cap, Baffin Island, Canada |
title_full_unstemmed |
The effects of flowline length evolution on chemistry - δ18O profiles from Penny Ice Cap, Baffin Island, Canada |
title_sort |
effects of flowline length evolution on chemistry - δ18o profiles from penny ice cap, baffin island, canada |
publisher |
Geological Survey of Canada |
publishDate |
2002 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-300886 https://doi.org/10.3189/172756402781817257 |
long_lat |
ENVELOPE(-66.214,-66.214,67.284,67.284) |
geographic |
Arctic Baffin Island Canada Greenland Penny Ice Cap |
geographic_facet |
Arctic Baffin Island Canada Greenland Penny Ice Cap |
genre |
Annals of Glaciology Arctic Baffin Island Baffin Greenland Ice cap Ice Sheet Penny Ice Cap |
genre_facet |
Annals of Glaciology Arctic Baffin Island Baffin Greenland Ice cap Ice Sheet Penny Ice Cap |
op_relation |
Annals of Glaciology, 0260-3055, 2002, 35:1, s. 150-156 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-300886 doi:10.3189/172756402781817257 ISI:000182023600026 Scopus 2-s2.0-0036968396 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3189/172756402781817257 |
container_title |
Annals of Glaciology |
container_volume |
35 |
container_start_page |
150 |
op_container_end_page |
156 |
_version_ |
1765999762111201280 |