Spatio-temporal variations in seasonal ice tongue submarine melt rate at a tidewater glacier in southwest Greenland
Submarine melting of tidewater glaciers is proposed as a trigger for their recent thinning, acceleration and retreat. We estimate spring submarine melt rates (SMRs) of Kangiata Nunaata Sermia in southwest Greenland, from 2012 to 2014, by examining changes in along-fjord freeboard and velocity of the...
Published in: | Journal of Glaciology |
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Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2019
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Online Access: | https://risweb.st-andrews.ac.uk/portal/en/researchoutput/spatiotemporal-variations-in-seasonal-ice-tongue-submarine-melt-rate-at-a-tidewater-glacier-in-southwest-greenland(5801ebf7-9213-4681-854a-35ba5af3df52).html https://doi.org/10.1017/jog.2019.27 https://research-repository.st-andrews.ac.uk/bitstream/10023/19652/1/Slater_2019_JG_Spatio_CC.pdf |
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ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/5801ebf7-9213-4681-854a-35ba5af3df52 2023-05-15T16:21:02+02:00 Spatio-temporal variations in seasonal ice tongue submarine melt rate at a tidewater glacier in southwest Greenland Moyer, A. N. Nienow, P. W. Gourmelen, N. Sole, A. J. Slater, D. A. Truffer, M. Fahnestock, M. 2019-08 application/pdf https://risweb.st-andrews.ac.uk/portal/en/researchoutput/spatiotemporal-variations-in-seasonal-ice-tongue-submarine-melt-rate-at-a-tidewater-glacier-in-southwest-greenland(5801ebf7-9213-4681-854a-35ba5af3df52).html https://doi.org/10.1017/jog.2019.27 https://research-repository.st-andrews.ac.uk/bitstream/10023/19652/1/Slater_2019_JG_Spatio_CC.pdf eng eng info:eu-repo/semantics/openAccess Moyer , A N , Nienow , P W , Gourmelen , N , Sole , A J , Slater , D A , Truffer , M & Fahnestock , M 2019 , ' Spatio-temporal variations in seasonal ice tongue submarine melt rate at a tidewater glacier in southwest Greenland ' , Journal of Glaciology , vol. 65 , no. 252 , pp. 523-530 . https://doi.org/10.1017/jog.2019.27 Glacier calving Ice/ocean interactions Remote sensing Subglacial processes article 2019 ftunstandrewcris https://doi.org/10.1017/jog.2019.27 2022-06-02T07:51:26Z Submarine melting of tidewater glaciers is proposed as a trigger for their recent thinning, acceleration and retreat. We estimate spring submarine melt rates (SMRs) of Kangiata Nunaata Sermia in southwest Greenland, from 2012 to 2014, by examining changes in along-fjord freeboard and velocity of the seasonal floating ice tongue. Estimated SMRs vary spatially and temporally near the grounding line, with mean rates of 1.3 ± 0.6, 0.8 ± 0.3 and 1.0 ± 0.4 m d−1 across the tongue in 2012, 2013 and 2014, respectively. Higher melt rates correspond with locations of emerging subglacial plumes and terminus calving activity observed during the melt season using time-lapse camera imagery. Modelling of subglacial flow paths suggests a dynamic system capable of rapid re-routing of subglacial discharge both within and between melt seasons. Our results provide an empirically-derived link between the presence of subglacial discharge plumes and areas of high spring submarine melting and calving along glacier termini. Article in Journal/Newspaper glacier Greenland Journal of Glaciology Tidewater University of St Andrews: Research Portal Greenland Journal of Glaciology 65 252 523 530 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Glacier calving Ice/ocean interactions Remote sensing Subglacial processes |
spellingShingle |
Glacier calving Ice/ocean interactions Remote sensing Subglacial processes Moyer, A. N. Nienow, P. W. Gourmelen, N. Sole, A. J. Slater, D. A. Truffer, M. Fahnestock, M. Spatio-temporal variations in seasonal ice tongue submarine melt rate at a tidewater glacier in southwest Greenland |
topic_facet |
Glacier calving Ice/ocean interactions Remote sensing Subglacial processes |
description |
Submarine melting of tidewater glaciers is proposed as a trigger for their recent thinning, acceleration and retreat. We estimate spring submarine melt rates (SMRs) of Kangiata Nunaata Sermia in southwest Greenland, from 2012 to 2014, by examining changes in along-fjord freeboard and velocity of the seasonal floating ice tongue. Estimated SMRs vary spatially and temporally near the grounding line, with mean rates of 1.3 ± 0.6, 0.8 ± 0.3 and 1.0 ± 0.4 m d−1 across the tongue in 2012, 2013 and 2014, respectively. Higher melt rates correspond with locations of emerging subglacial plumes and terminus calving activity observed during the melt season using time-lapse camera imagery. Modelling of subglacial flow paths suggests a dynamic system capable of rapid re-routing of subglacial discharge both within and between melt seasons. Our results provide an empirically-derived link between the presence of subglacial discharge plumes and areas of high spring submarine melting and calving along glacier termini. |
format |
Article in Journal/Newspaper |
author |
Moyer, A. N. Nienow, P. W. Gourmelen, N. Sole, A. J. Slater, D. A. Truffer, M. Fahnestock, M. |
author_facet |
Moyer, A. N. Nienow, P. W. Gourmelen, N. Sole, A. J. Slater, D. A. Truffer, M. Fahnestock, M. |
author_sort |
Moyer, A. N. |
title |
Spatio-temporal variations in seasonal ice tongue submarine melt rate at a tidewater glacier in southwest Greenland |
title_short |
Spatio-temporal variations in seasonal ice tongue submarine melt rate at a tidewater glacier in southwest Greenland |
title_full |
Spatio-temporal variations in seasonal ice tongue submarine melt rate at a tidewater glacier in southwest Greenland |
title_fullStr |
Spatio-temporal variations in seasonal ice tongue submarine melt rate at a tidewater glacier in southwest Greenland |
title_full_unstemmed |
Spatio-temporal variations in seasonal ice tongue submarine melt rate at a tidewater glacier in southwest Greenland |
title_sort |
spatio-temporal variations in seasonal ice tongue submarine melt rate at a tidewater glacier in southwest greenland |
publishDate |
2019 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/spatiotemporal-variations-in-seasonal-ice-tongue-submarine-melt-rate-at-a-tidewater-glacier-in-southwest-greenland(5801ebf7-9213-4681-854a-35ba5af3df52).html https://doi.org/10.1017/jog.2019.27 https://research-repository.st-andrews.ac.uk/bitstream/10023/19652/1/Slater_2019_JG_Spatio_CC.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland Journal of Glaciology Tidewater |
genre_facet |
glacier Greenland Journal of Glaciology Tidewater |
op_source |
Moyer , A N , Nienow , P W , Gourmelen , N , Sole , A J , Slater , D A , Truffer , M & Fahnestock , M 2019 , ' Spatio-temporal variations in seasonal ice tongue submarine melt rate at a tidewater glacier in southwest Greenland ' , Journal of Glaciology , vol. 65 , no. 252 , pp. 523-530 . https://doi.org/10.1017/jog.2019.27 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1017/jog.2019.27 |
container_title |
Journal of Glaciology |
container_volume |
65 |
container_issue |
252 |
container_start_page |
523 |
op_container_end_page |
530 |
_version_ |
1766009058091859968 |