An imbalancing act: the delayed dynamic response of the Kaskawulsh Glacier to sustained mass loss
International audience The Kaskawulsh Glacier is an iconic outlet draining the icefields of the St. Elias Mountains in Yukon, Canada. We determine and attempt to interpret its catchment-wide mass budget since 2007. Using SPOT5/6/7 data we estimate a 2007-18 geodetic balance of −0.46 ± 0.17 m w.e. a...
Published in: | Journal of Glaciology |
---|---|
Main Authors: | , , , |
Other Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2021
|
Subjects: | |
Online Access: | https://hal.science/hal-03361115 https://hal.science/hal-03361115/document https://hal.science/hal-03361115/file/Young_et_al_JOG_2021.pdf https://doi.org/10.1017/jog.2020.107 |
id |
ftmeteofrance:oai:HAL:hal-03361115v1 |
---|---|
record_format |
openpolar |
spelling |
ftmeteofrance:oai:HAL:hal-03361115v1 2024-04-28T08:20:19+00:00 An imbalancing act: the delayed dynamic response of the Kaskawulsh Glacier to sustained mass loss Young, Erik, M Flowers, Gwenn, E Berthier, Etienne Latto, Rebecca Simon Fraser University = Université Simon Fraser (SFU.ca) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) 2021 https://hal.science/hal-03361115 https://hal.science/hal-03361115/document https://hal.science/hal-03361115/file/Young_et_al_JOG_2021.pdf https://doi.org/10.1017/jog.2020.107 en eng HAL CCSD International Glaciological Society info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2020.107 hal-03361115 https://hal.science/hal-03361115 https://hal.science/hal-03361115/document https://hal.science/hal-03361115/file/Young_et_al_JOG_2021.pdf doi:10.1017/jog.2020.107 info:eu-repo/semantics/OpenAccess ISSN: 0022-1430 EISSN: 1727-5652 Journal of Glaciology https://hal.science/hal-03361115 Journal of Glaciology, 2021, 67 (262), pp.313-330. ⟨10.1017/jog.2020.107⟩ Glacier mass balance ground-penetrating radar ice and climate melt-surface mountain glaciers [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2021 ftmeteofrance https://doi.org/10.1017/jog.2020.107 2024-04-04T17:10:18Z International audience The Kaskawulsh Glacier is an iconic outlet draining the icefields of the St. Elias Mountains in Yukon, Canada. We determine and attempt to interpret its catchment-wide mass budget since 2007. Using SPOT5/6/7 data we estimate a 2007-18 geodetic balance of −0.46 ± 0.17 m w.e. a −1. We then compute balance fluxes and observed ice fluxes at nine flux gates to examine the discrepancy between the climatic mass balance and internal mass redistribution by glacier flow. Balance fluxes are computed using a fully distributed mass-balance model driven by downscaled and bias-corrected climate-reanalysis data. Observed fluxes are calculated using NASA ITS_LIVE surface velocities and glacier cross-sectional areas derived from ice-penetrating radar data. We find the glacier is still in the early stages of dynamic adjustment to its mass imbalance. We estimate a committed terminus retreat of ∼23 km under the 2007-18 climate and a lower bound of 46 km 3 of committed ice loss, equivalent to ∼15% of the total glacier volume. Article in Journal/Newspaper glacier* Journal of Glaciology Yukon Météo-France: HAL Journal of Glaciology 67 262 313 330 |
institution |
Open Polar |
collection |
Météo-France: HAL |
op_collection_id |
ftmeteofrance |
language |
English |
topic |
Glacier mass balance ground-penetrating radar ice and climate melt-surface mountain glaciers [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
Glacier mass balance ground-penetrating radar ice and climate melt-surface mountain glaciers [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Young, Erik, M Flowers, Gwenn, E Berthier, Etienne Latto, Rebecca An imbalancing act: the delayed dynamic response of the Kaskawulsh Glacier to sustained mass loss |
topic_facet |
Glacier mass balance ground-penetrating radar ice and climate melt-surface mountain glaciers [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience The Kaskawulsh Glacier is an iconic outlet draining the icefields of the St. Elias Mountains in Yukon, Canada. We determine and attempt to interpret its catchment-wide mass budget since 2007. Using SPOT5/6/7 data we estimate a 2007-18 geodetic balance of −0.46 ± 0.17 m w.e. a −1. We then compute balance fluxes and observed ice fluxes at nine flux gates to examine the discrepancy between the climatic mass balance and internal mass redistribution by glacier flow. Balance fluxes are computed using a fully distributed mass-balance model driven by downscaled and bias-corrected climate-reanalysis data. Observed fluxes are calculated using NASA ITS_LIVE surface velocities and glacier cross-sectional areas derived from ice-penetrating radar data. We find the glacier is still in the early stages of dynamic adjustment to its mass imbalance. We estimate a committed terminus retreat of ∼23 km under the 2007-18 climate and a lower bound of 46 km 3 of committed ice loss, equivalent to ∼15% of the total glacier volume. |
author2 |
Simon Fraser University = Université Simon Fraser (SFU.ca) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Young, Erik, M Flowers, Gwenn, E Berthier, Etienne Latto, Rebecca |
author_facet |
Young, Erik, M Flowers, Gwenn, E Berthier, Etienne Latto, Rebecca |
author_sort |
Young, Erik, M |
title |
An imbalancing act: the delayed dynamic response of the Kaskawulsh Glacier to sustained mass loss |
title_short |
An imbalancing act: the delayed dynamic response of the Kaskawulsh Glacier to sustained mass loss |
title_full |
An imbalancing act: the delayed dynamic response of the Kaskawulsh Glacier to sustained mass loss |
title_fullStr |
An imbalancing act: the delayed dynamic response of the Kaskawulsh Glacier to sustained mass loss |
title_full_unstemmed |
An imbalancing act: the delayed dynamic response of the Kaskawulsh Glacier to sustained mass loss |
title_sort |
imbalancing act: the delayed dynamic response of the kaskawulsh glacier to sustained mass loss |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-03361115 https://hal.science/hal-03361115/document https://hal.science/hal-03361115/file/Young_et_al_JOG_2021.pdf https://doi.org/10.1017/jog.2020.107 |
genre |
glacier* Journal of Glaciology Yukon |
genre_facet |
glacier* Journal of Glaciology Yukon |
op_source |
ISSN: 0022-1430 EISSN: 1727-5652 Journal of Glaciology https://hal.science/hal-03361115 Journal of Glaciology, 2021, 67 (262), pp.313-330. ⟨10.1017/jog.2020.107⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2020.107 hal-03361115 https://hal.science/hal-03361115 https://hal.science/hal-03361115/document https://hal.science/hal-03361115/file/Young_et_al_JOG_2021.pdf doi:10.1017/jog.2020.107 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1017/jog.2020.107 |
container_title |
Journal of Glaciology |
container_volume |
67 |
container_issue |
262 |
container_start_page |
313 |
op_container_end_page |
330 |
_version_ |
1797583269507629056 |