Stable isotope (δD–δ18O) relationships of ice facies and glaciological structures within the mid-latitude maritime Fox Glacier, New Zealand
Relationships between stable isotopes (δD–δ18O), ice facies and glacier structures have hith- erto gone untested in the mid-latitude maritime glaciers of the Southern Hemisphere. Here, we present δD–δ18O values as part of a broader study of the structural glaciology of Fox Glacier, New Zealand. We a...
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ftunivcanter:oai:ir.canterbury.ac.nz:10092/14528 2023-05-15T13:29:41+02:00 Stable isotope (δD–δ18O) relationships of ice facies and glaciological structures within the mid-latitude maritime Fox Glacier, New Zealand Appleby JR Brook MS Horton TW Fuller IC Holt KA Quincey DJ 2017-07-13T04:12:39Z application/pdf http://hdl.handle.net/10092/14528 https://doi.org/10.1017/aog.2017.11 en eng Appleby JR, Brook MS, Horton TW, Fuller IC, Holt KA, Quincey DJ (2017). Stable isotope (δD–δ18O) relationships of ice facies and glaciological structures within the mid-latitude maritime Fox Glacier, New Zealand. Annals of Glaciology. 1-11. http://hdl.handle.net/10092/14528 https://doi.org/10.1017/aog.2017.11 This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited. CC-BY glacier hydrochemistry mountain glaciers structural glaciology Fields of Research::37 - Earth sciences::3709 - Physical geography and environmental geoscience::370902 - Glaciology Journal Article 2017 ftunivcanter https://doi.org/10.1017/aog.2017.11 2022-09-08T13:37:50Z Relationships between stable isotopes (δD–δ18O), ice facies and glacier structures have hith- erto gone untested in the mid-latitude maritime glaciers of the Southern Hemisphere. Here, we present δD–δ18O values as part of a broader study of the structural glaciology of Fox Glacier, New Zealand. We analyzed 94 samples of δD–δ18O from a range of ice facies to investigate whether isotopes have potential for structural glaciological studies of a rapidly deforming glacier. The δD–δ18O measurements were aided by structural mapping and imagery from terminus time-lapse cameras. The current retreat phase was preceded by an advance of 1 km between 1984 and 2009, with the isotopic sampling and ana- lysis undertaken at the end of that advance (2010/11). Stable isotopes from debris-bearing shear planes near the terminus, interpreted as thrust faults, are isotopically enriched compared with the surrounding ice. When plotted on co-isotopic diagrams (δD–δ18O), ice sampled from the shear planes appears to show a subtle, but distinctive isotopic signal compared with the surrounding clean ice on the lower glacier. Hence, stable isotopes (δD–δ18O) have potential within the structural glaciology field, but larger sample numbers than reported here may be required to establish isotopic contrasts between a broad range of ice facies and glacier structures. Article in Journal/Newspaper Annals of Glaciology University of Canterbury, Christchurch: UC Research Repository Fox Glacier ENVELOPE(114.417,114.417,-66.233,-66.233) New Zealand Annals of Glaciology 58 75pt2 155 165 |
institution |
Open Polar |
collection |
University of Canterbury, Christchurch: UC Research Repository |
op_collection_id |
ftunivcanter |
language |
English |
topic |
glacier hydrochemistry mountain glaciers structural glaciology Fields of Research::37 - Earth sciences::3709 - Physical geography and environmental geoscience::370902 - Glaciology |
spellingShingle |
glacier hydrochemistry mountain glaciers structural glaciology Fields of Research::37 - Earth sciences::3709 - Physical geography and environmental geoscience::370902 - Glaciology Appleby JR Brook MS Horton TW Fuller IC Holt KA Quincey DJ Stable isotope (δD–δ18O) relationships of ice facies and glaciological structures within the mid-latitude maritime Fox Glacier, New Zealand |
topic_facet |
glacier hydrochemistry mountain glaciers structural glaciology Fields of Research::37 - Earth sciences::3709 - Physical geography and environmental geoscience::370902 - Glaciology |
description |
Relationships between stable isotopes (δD–δ18O), ice facies and glacier structures have hith- erto gone untested in the mid-latitude maritime glaciers of the Southern Hemisphere. Here, we present δD–δ18O values as part of a broader study of the structural glaciology of Fox Glacier, New Zealand. We analyzed 94 samples of δD–δ18O from a range of ice facies to investigate whether isotopes have potential for structural glaciological studies of a rapidly deforming glacier. The δD–δ18O measurements were aided by structural mapping and imagery from terminus time-lapse cameras. The current retreat phase was preceded by an advance of 1 km between 1984 and 2009, with the isotopic sampling and ana- lysis undertaken at the end of that advance (2010/11). Stable isotopes from debris-bearing shear planes near the terminus, interpreted as thrust faults, are isotopically enriched compared with the surrounding ice. When plotted on co-isotopic diagrams (δD–δ18O), ice sampled from the shear planes appears to show a subtle, but distinctive isotopic signal compared with the surrounding clean ice on the lower glacier. Hence, stable isotopes (δD–δ18O) have potential within the structural glaciology field, but larger sample numbers than reported here may be required to establish isotopic contrasts between a broad range of ice facies and glacier structures. |
format |
Article in Journal/Newspaper |
author |
Appleby JR Brook MS Horton TW Fuller IC Holt KA Quincey DJ |
author_facet |
Appleby JR Brook MS Horton TW Fuller IC Holt KA Quincey DJ |
author_sort |
Appleby JR |
title |
Stable isotope (δD–δ18O) relationships of ice facies and glaciological structures within the mid-latitude maritime Fox Glacier, New Zealand |
title_short |
Stable isotope (δD–δ18O) relationships of ice facies and glaciological structures within the mid-latitude maritime Fox Glacier, New Zealand |
title_full |
Stable isotope (δD–δ18O) relationships of ice facies and glaciological structures within the mid-latitude maritime Fox Glacier, New Zealand |
title_fullStr |
Stable isotope (δD–δ18O) relationships of ice facies and glaciological structures within the mid-latitude maritime Fox Glacier, New Zealand |
title_full_unstemmed |
Stable isotope (δD–δ18O) relationships of ice facies and glaciological structures within the mid-latitude maritime Fox Glacier, New Zealand |
title_sort |
stable isotope (δd–δ18o) relationships of ice facies and glaciological structures within the mid-latitude maritime fox glacier, new zealand |
publishDate |
2017 |
url |
http://hdl.handle.net/10092/14528 https://doi.org/10.1017/aog.2017.11 |
long_lat |
ENVELOPE(114.417,114.417,-66.233,-66.233) |
geographic |
Fox Glacier New Zealand |
geographic_facet |
Fox Glacier New Zealand |
genre |
Annals of Glaciology |
genre_facet |
Annals of Glaciology |
op_relation |
Appleby JR, Brook MS, Horton TW, Fuller IC, Holt KA, Quincey DJ (2017). Stable isotope (δD–δ18O) relationships of ice facies and glaciological structures within the mid-latitude maritime Fox Glacier, New Zealand. Annals of Glaciology. 1-11. http://hdl.handle.net/10092/14528 https://doi.org/10.1017/aog.2017.11 |
op_rights |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1017/aog.2017.11 |
container_title |
Annals of Glaciology |
container_volume |
58 |
container_issue |
75pt2 |
container_start_page |
155 |
op_container_end_page |
165 |
_version_ |
1766001989919965184 |