Stable isotope (δD–δ18O) relationships of ice facies and glaciological structures within the mid-latitude maritime Fox Glacier, New Zealand

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dc.contributor.authorAppleby JR
dc.contributor.authorBrook MS
dc.contributor.authorHorton TW
dc.contributor.authorFuller IC
dc.contributor.authorHolt KA
dc.contributor.authorQuincey DJ
dc.date.accessioned2017-10-15T21:08:58Z
dc.date.available2017-10-15T21:08:58Z
dc.date.issued2017en
dc.date.updated2017-07-13T04:12:39Z
dc.description.abstractRelationships 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.en
dc.identifier.citationAppleby 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.en
dc.identifier.doihttps://doi.org/10.1017/aog.2017.11
dc.identifier.urihttp://hdl.handle.net/10092/14528
dc.language.isoen
dc.rightsThis 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.en
dc.subjectglacier hydrochemistryen
dc.subjectmountain glaciersen
dc.subjectstructural glaciologyen
dc.subject.anzsrcFields of Research::37 - Earth sciences::3709 - Physical geography and environmental geoscience::370902 - Glaciologyen
dc.titleStable isotope (δD–δ18O) relationships of ice facies and glaciological structures within the mid-latitude maritime Fox Glacier, New Zealanden
dc.typeJournal Articleen
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