Origin of stratified basal ice in outlet glaciers of Vatnajökull and Öræfajökull, Iceland
Larson, G.J., Lawson, D.E., Evenson, E.B., Knudsen, Ó., Alley, R.B. & Phanikumar, M.S. 2010: Origin of stratified basal ice in outlet glaciers of Vatnajökull and Öræfajökull, Iceland. Boreas , Vol. 39, pp. 457–470. 10.1111/j.1502‐3885.2009.00134.x. ISSN 0300‐9483. During the period 2000–2005, we...
Published in: | Boreas |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2010
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/j.1502-3885.2009.00134.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.2009.00134.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.2009.00134.x |
id |
crwiley:10.1111/j.1502-3885.2009.00134.x |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/j.1502-3885.2009.00134.x 2024-03-31T07:53:28+00:00 Origin of stratified basal ice in outlet glaciers of Vatnajökull and Öræfajökull, Iceland LARSON, GRAHAME J. LAWSON, DANIEL E. EVENSON, EDWARD B. KNUDSEN, ÓSKAR ALLEY, RICHARD B. PHANIKUMAR, MANTHA S. 2010 http://dx.doi.org/10.1111/j.1502-3885.2009.00134.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.2009.00134.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.2009.00134.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Boreas volume 39, issue 3, page 457-470 ISSN 0300-9483 1502-3885 Geology Archeology Ecology, Evolution, Behavior and Systematics journal-article 2010 crwiley https://doi.org/10.1111/j.1502-3885.2009.00134.x 2024-03-04T13:02:55Z Larson, G.J., Lawson, D.E., Evenson, E.B., Knudsen, Ó., Alley, R.B. & Phanikumar, M.S. 2010: Origin of stratified basal ice in outlet glaciers of Vatnajökull and Öræfajökull, Iceland. Boreas , Vol. 39, pp. 457–470. 10.1111/j.1502‐3885.2009.00134.x. ISSN 0300‐9483. During the period 2000–2005, we collected samples of englacial ice, vent water, frazil/anchor ice and stratified basal ice from warm‐based outlet glaciers of Vatnajökull and Öræfajökull, Iceland, and analysed them for 3 H, 18 O and D. Results of 3 H analyses show that the stratified basal ice contains 3 H from atmospheric thermonuclear testing and is younger than the englacial ice. Results of the 18 O and D analyses show that frazil/anchor and stratified basal ice are both enriched by an average of 2.4‰ in 18 O and 11‰ in D relative to vent water. These values are consistent with fractionation during partial freezing of supercooled subglacial water in an open system, one in which the remaining water is continuously removed and replenished by water of similar composition. The isotopic data and field observations do not support either a regelation or a thermal ad‐freeze‐on origin for the stratified basal ice. Article in Journal/Newspaper Iceland Vatnajökull Wiley Online Library Vatnajökull ENVELOPE(-16.823,-16.823,64.420,64.420) Boreas ENVELOPE(-3.933,-3.933,-71.300,-71.300) Knudsen ENVELOPE(16.057,16.057,67.137,67.137) Boreas |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
topic |
Geology Archeology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Geology Archeology Ecology, Evolution, Behavior and Systematics LARSON, GRAHAME J. LAWSON, DANIEL E. EVENSON, EDWARD B. KNUDSEN, ÓSKAR ALLEY, RICHARD B. PHANIKUMAR, MANTHA S. Origin of stratified basal ice in outlet glaciers of Vatnajökull and Öræfajökull, Iceland |
topic_facet |
Geology Archeology Ecology, Evolution, Behavior and Systematics |
description |
Larson, G.J., Lawson, D.E., Evenson, E.B., Knudsen, Ó., Alley, R.B. & Phanikumar, M.S. 2010: Origin of stratified basal ice in outlet glaciers of Vatnajökull and Öræfajökull, Iceland. Boreas , Vol. 39, pp. 457–470. 10.1111/j.1502‐3885.2009.00134.x. ISSN 0300‐9483. During the period 2000–2005, we collected samples of englacial ice, vent water, frazil/anchor ice and stratified basal ice from warm‐based outlet glaciers of Vatnajökull and Öræfajökull, Iceland, and analysed them for 3 H, 18 O and D. Results of 3 H analyses show that the stratified basal ice contains 3 H from atmospheric thermonuclear testing and is younger than the englacial ice. Results of the 18 O and D analyses show that frazil/anchor and stratified basal ice are both enriched by an average of 2.4‰ in 18 O and 11‰ in D relative to vent water. These values are consistent with fractionation during partial freezing of supercooled subglacial water in an open system, one in which the remaining water is continuously removed and replenished by water of similar composition. The isotopic data and field observations do not support either a regelation or a thermal ad‐freeze‐on origin for the stratified basal ice. |
format |
Article in Journal/Newspaper |
author |
LARSON, GRAHAME J. LAWSON, DANIEL E. EVENSON, EDWARD B. KNUDSEN, ÓSKAR ALLEY, RICHARD B. PHANIKUMAR, MANTHA S. |
author_facet |
LARSON, GRAHAME J. LAWSON, DANIEL E. EVENSON, EDWARD B. KNUDSEN, ÓSKAR ALLEY, RICHARD B. PHANIKUMAR, MANTHA S. |
author_sort |
LARSON, GRAHAME J. |
title |
Origin of stratified basal ice in outlet glaciers of Vatnajökull and Öræfajökull, Iceland |
title_short |
Origin of stratified basal ice in outlet glaciers of Vatnajökull and Öræfajökull, Iceland |
title_full |
Origin of stratified basal ice in outlet glaciers of Vatnajökull and Öræfajökull, Iceland |
title_fullStr |
Origin of stratified basal ice in outlet glaciers of Vatnajökull and Öræfajökull, Iceland |
title_full_unstemmed |
Origin of stratified basal ice in outlet glaciers of Vatnajökull and Öræfajökull, Iceland |
title_sort |
origin of stratified basal ice in outlet glaciers of vatnajökull and öræfajökull, iceland |
publisher |
Wiley |
publishDate |
2010 |
url |
http://dx.doi.org/10.1111/j.1502-3885.2009.00134.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.2009.00134.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.2009.00134.x |
long_lat |
ENVELOPE(-16.823,-16.823,64.420,64.420) ENVELOPE(-3.933,-3.933,-71.300,-71.300) ENVELOPE(16.057,16.057,67.137,67.137) |
geographic |
Vatnajökull Boreas Knudsen |
geographic_facet |
Vatnajökull Boreas Knudsen |
genre |
Iceland Vatnajökull |
genre_facet |
Iceland Vatnajökull |
op_source |
Boreas volume 39, issue 3, page 457-470 ISSN 0300-9483 1502-3885 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1502-3885.2009.00134.x |
container_title |
Boreas |
_version_ |
1795033188199825408 |