Evolution of the glacial landscape of the Southern Alps of New Zealand : Insights from a glacial erosion model

International audience A new version of a landscape evolution model that includes the evolution of an ice cap at a 103 to 105 year timescale and its associated erosion patterns is presented and applied to the Southern Alps of New Zealand. Modeling of the ice cap evolution is performed on a higher-re...

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Published in:Journal of Geophysical Research
Main Authors: Herman, Frédéric, Braun, Jean
Other Authors: Research School of Earth Sciences Canberra (RSES), Australian National University (ANU), Géosciences Rennes (GR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre Armoricain de Recherches en Environnement-Centre National de la Recherche Scientifique (CNRS)
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2008
Subjects:
Online Access:https://hal-insu.archives-ouvertes.fr/insu-00289024
https://hal-insu.archives-ouvertes.fr/insu-00289024/document
https://hal-insu.archives-ouvertes.fr/insu-00289024/file/Herman_et_al-2008-Journal_of_Geophysical_Research__Solid_Earth_%281978-2012%29.pdf
https://doi.org/10.1029/2007JF000807
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spelling ftinsu:oai:HAL:insu-00289024v1 2023-06-18T03:41:07+02:00 Evolution of the glacial landscape of the Southern Alps of New Zealand : Insights from a glacial erosion model Herman, Frédéric Braun, Jean Research School of Earth Sciences Canberra (RSES) Australian National University (ANU) Géosciences Rennes (GR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre Armoricain de Recherches en Environnement-Centre National de la Recherche Scientifique (CNRS) 2008 https://hal-insu.archives-ouvertes.fr/insu-00289024 https://hal-insu.archives-ouvertes.fr/insu-00289024/document https://hal-insu.archives-ouvertes.fr/insu-00289024/file/Herman_et_al-2008-Journal_of_Geophysical_Research__Solid_Earth_%281978-2012%29.pdf https://doi.org/10.1029/2007JF000807 en eng HAL CCSD American Geophysical Union/Wiley info:eu-repo/semantics/altIdentifier/doi/10.1029/2007JF000807 insu-00289024 https://hal-insu.archives-ouvertes.fr/insu-00289024 https://hal-insu.archives-ouvertes.fr/insu-00289024/document https://hal-insu.archives-ouvertes.fr/insu-00289024/file/Herman_et_al-2008-Journal_of_Geophysical_Research__Solid_Earth_%281978-2012%29.pdf doi:10.1029/2007JF000807 info:eu-repo/semantics/OpenAccess ISSN: 2169-9003 EISSN: 2169-9011 Journal of Geophysical Research: Earth Surface https://hal-insu.archives-ouvertes.fr/insu-00289024 Journal of Geophysical Research: Earth Surface, 2008, 113 (F2), pp.F02009. ⟨10.1029/2007JF000807⟩ [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics info:eu-repo/semantics/article Journal articles 2008 ftinsu https://doi.org/10.1029/2007JF000807 2023-06-06T01:06:53Z International audience A new version of a landscape evolution model that includes the evolution of an ice cap at a 103 to 105 year timescale and its associated erosion patterns is presented and applied to the Southern Alps of New Zealand. Modeling of the ice cap evolution is performed on a higher-resolution grid (i.e., 100 m) than previously (Braun et al., 1998). It predicts which parts of the landscape are, and have been, affected by glacial erosion. The model results highlight the complexity of the erosion patterns induced by ice caps and glaciers. Glacial erosion in a tectonically active area is, as suggested by the model, not uniform across the mountain range. Furthermore, high rock uplift rates, heavy precipitation, and climatic oscillations constantly interact. The feedback mechanisms are such that they render the landform very dynamic and transient. However, under conditions of reduced rock uplift rate and precipitation, the landform becomes more stable at the timescale of the glacial cycle. Finally, the modeling results favor a tectonic model in the Southern Alps in which the maximum rock uplift is offset from the Alpine Fault. Article in Journal/Newspaper Ice cap Institut national des sciences de l'Univers: HAL-INSU High Rock ENVELOPE(-111.452,-111.452,58.917,58.917) New Zealand Journal of Geophysical Research 113 F2
institution Open Polar
collection Institut national des sciences de l'Univers: HAL-INSU
op_collection_id ftinsu
language English
topic [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology
[SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics
spellingShingle [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology
[SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics
Herman, Frédéric
Braun, Jean
Evolution of the glacial landscape of the Southern Alps of New Zealand : Insights from a glacial erosion model
topic_facet [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology
[SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics
description International audience A new version of a landscape evolution model that includes the evolution of an ice cap at a 103 to 105 year timescale and its associated erosion patterns is presented and applied to the Southern Alps of New Zealand. Modeling of the ice cap evolution is performed on a higher-resolution grid (i.e., 100 m) than previously (Braun et al., 1998). It predicts which parts of the landscape are, and have been, affected by glacial erosion. The model results highlight the complexity of the erosion patterns induced by ice caps and glaciers. Glacial erosion in a tectonically active area is, as suggested by the model, not uniform across the mountain range. Furthermore, high rock uplift rates, heavy precipitation, and climatic oscillations constantly interact. The feedback mechanisms are such that they render the landform very dynamic and transient. However, under conditions of reduced rock uplift rate and precipitation, the landform becomes more stable at the timescale of the glacial cycle. Finally, the modeling results favor a tectonic model in the Southern Alps in which the maximum rock uplift is offset from the Alpine Fault.
author2 Research School of Earth Sciences Canberra (RSES)
Australian National University (ANU)
Géosciences Rennes (GR)
Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre Armoricain de Recherches en Environnement-Centre National de la Recherche Scientifique (CNRS)
format Article in Journal/Newspaper
author Herman, Frédéric
Braun, Jean
author_facet Herman, Frédéric
Braun, Jean
author_sort Herman, Frédéric
title Evolution of the glacial landscape of the Southern Alps of New Zealand : Insights from a glacial erosion model
title_short Evolution of the glacial landscape of the Southern Alps of New Zealand : Insights from a glacial erosion model
title_full Evolution of the glacial landscape of the Southern Alps of New Zealand : Insights from a glacial erosion model
title_fullStr Evolution of the glacial landscape of the Southern Alps of New Zealand : Insights from a glacial erosion model
title_full_unstemmed Evolution of the glacial landscape of the Southern Alps of New Zealand : Insights from a glacial erosion model
title_sort evolution of the glacial landscape of the southern alps of new zealand : insights from a glacial erosion model
publisher HAL CCSD
publishDate 2008
url https://hal-insu.archives-ouvertes.fr/insu-00289024
https://hal-insu.archives-ouvertes.fr/insu-00289024/document
https://hal-insu.archives-ouvertes.fr/insu-00289024/file/Herman_et_al-2008-Journal_of_Geophysical_Research__Solid_Earth_%281978-2012%29.pdf
https://doi.org/10.1029/2007JF000807
long_lat ENVELOPE(-111.452,-111.452,58.917,58.917)
geographic High Rock
New Zealand
geographic_facet High Rock
New Zealand
genre Ice cap
genre_facet Ice cap
op_source ISSN: 2169-9003
EISSN: 2169-9011
Journal of Geophysical Research: Earth Surface
https://hal-insu.archives-ouvertes.fr/insu-00289024
Journal of Geophysical Research: Earth Surface, 2008, 113 (F2), pp.F02009. ⟨10.1029/2007JF000807⟩
op_relation info:eu-repo/semantics/altIdentifier/doi/10.1029/2007JF000807
insu-00289024
https://hal-insu.archives-ouvertes.fr/insu-00289024
https://hal-insu.archives-ouvertes.fr/insu-00289024/document
https://hal-insu.archives-ouvertes.fr/insu-00289024/file/Herman_et_al-2008-Journal_of_Geophysical_Research__Solid_Earth_%281978-2012%29.pdf
doi:10.1029/2007JF000807
op_rights info:eu-repo/semantics/OpenAccess
op_doi https://doi.org/10.1029/2007JF000807
container_title Journal of Geophysical Research
container_volume 113
container_issue F2
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