Evolution of the glacial landscape of the Southern Alps of New Zealand : Insights from a glacial erosion model
Identifieur interne : 003369 ( PascalFrancis/Corpus ); précédent : 003368; suivant : 003370Evolution of the glacial landscape of the Southern Alps of New Zealand : Insights from a glacial erosion model
Auteurs : Frédéric Herman ; Jean BraunSource :
- Journal of geophysical research [ 0148-0227 ] ; 2008.
Descripteurs français
- Pascal (Inist)
- Paysage, Erosion glaciaire, Modèle tectonique, Calotte glaciaire, Modélisation, Aluminium, Complexité, Glacier, Massif montagneux, Surrection, Précipitation atmosphérique, Oscillation, Rétroaction, Boucle réaction, Forme relief, Dynamique, Phénomène transitoire, Cycle, Alpes, Nouvelle Zélande, Faille Alpine.
English descriptors
- KwdEn :
Abstract
[1] 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.
Notice en format standard (ISO 2709)
Pour connaître la documentation sur le format Inist Standard.
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Format Inist (serveur)
NO : | PASCAL 08-0395030 INIST |
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ET : | Evolution of the glacial landscape of the Southern Alps of New Zealand : Insights from a glacial erosion model |
AU : | HERMAN (Frédéric); BRAUN (Jean) |
AF : | Research School of Earth Sciences, Australian National University/Canberra, ACT/Australie (1 aut.); Geological and Planetary Science Division, California Institute of Technology/Pasadena, California/Etats-Unis (1 aut.); Geologisches Institut, ETH Zurich/Zurich/Suisse (1 aut.); Géosciences Rennes, Université de Rennes 1/Rennes/France (2 aut.) |
DT : | Publication en série; Niveau analytique |
SO : | Journal of geophysical research; ISSN 0148-0227; Etats-Unis; Da. 2008; Vol. 113; No. F2; F02009.1-F02009.24; Bibl. 1 p.1/2 |
LA : | Anglais |
EA : | [1] 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. |
CC : | 001E; 001E01; 220 |
FD : | Paysage; Erosion glaciaire; Modèle tectonique; Calotte glaciaire; Modélisation; Aluminium; Complexité; Glacier; Massif montagneux; Surrection; Précipitation atmosphérique; Oscillation; Rétroaction; Boucle réaction; Forme relief; Dynamique; Phénomène transitoire; Cycle; Alpes; Nouvelle Zélande; Faille Alpine |
FG : | Europe; Australasie; Nouvelle Zélande Ile Sud |
ED : | landscapes; glacial erosion; tectonic models; ice caps; Modeling; aluminum; Complexity; glaciers; mountains; uplifts; atmospheric precipitation; oscillations; feedback; Feedback; landforms; dynamics; transient phenomena; cycles; Alps; New Zealand; Alpine Fault |
EG : | Europe; Australasia; South Island |
SD : | Paisaje; Erosión glaciar; Casquete glaciar; Modelización; Aluminio; Complejidad; Glaciar; Macizo montañoso; Precipitación atmosférica; Oscilación; Retroalimentación; Dinámica; Alpes; Nueva Zelandia; Falla Alpina |
LO : | INIST-3144.354000197384270090 |
ID : | 08-0395030 |
Links to Exploration step
Pascal:08-0395030Le document en format XML
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<front><div type="abstract" xml:lang="en">[1] A new version of a landscape evolution model that includes the evolution of an ice cap at a 10<sup>3</sup>
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<server><NO>PASCAL 08-0395030 INIST</NO>
<ET>Evolution of the glacial landscape of the Southern Alps of New Zealand : Insights from a glacial erosion model</ET>
<AU>HERMAN (Frédéric); BRAUN (Jean)</AU>
<AF>Research School of Earth Sciences, Australian National University/Canberra, ACT/Australie (1 aut.); Geological and Planetary Science Division, California Institute of Technology/Pasadena, California/Etats-Unis (1 aut.); Geologisches Institut, ETH Zurich/Zurich/Suisse (1 aut.); Géosciences Rennes, Université de Rennes 1/Rennes/France (2 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Journal of geophysical research; ISSN 0148-0227; Etats-Unis; Da. 2008; Vol. 113; No. F2; F02009.1-F02009.24; Bibl. 1 p.1/2</SO>
<LA>Anglais</LA>
<EA>[1] A new version of a landscape evolution model that includes the evolution of an ice cap at a 10<sup>3</sup>
to 10<sup>5</sup>
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.</EA>
<CC>001E; 001E01; 220</CC>
<FD>Paysage; Erosion glaciaire; Modèle tectonique; Calotte glaciaire; Modélisation; Aluminium; Complexité; Glacier; Massif montagneux; Surrection; Précipitation atmosphérique; Oscillation; Rétroaction; Boucle réaction; Forme relief; Dynamique; Phénomène transitoire; Cycle; Alpes; Nouvelle Zélande; Faille Alpine</FD>
<FG>Europe; Australasie; Nouvelle Zélande Ile Sud</FG>
<ED>landscapes; glacial erosion; tectonic models; ice caps; Modeling; aluminum; Complexity; glaciers; mountains; uplifts; atmospheric precipitation; oscillations; feedback; Feedback; landforms; dynamics; transient phenomena; cycles; Alps; New Zealand; Alpine Fault</ED>
<EG>Europe; Australasia; South Island</EG>
<SD>Paisaje; Erosión glaciar; Casquete glaciar; Modelización; Aluminio; Complejidad; Glaciar; Macizo montañoso; Precipitación atmosférica; Oscilación; Retroalimentación; Dinámica; Alpes; Nueva Zelandia; Falla Alpina</SD>
<LO>INIST-3144.354000197384270090</LO>
<ID>08-0395030</ID>
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