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ABSTRACT. Finite-element method is used to determine the temperature distribution within the Erebus Glacier tongue based on information from short-term observations (Holdsworth, 1982). It is shown that, provided the up-stream temperature profile along the depth is known, steady-state assumptions are...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.454.2165 http://www.igsoc.org:8080/journal/32/112/igs_journal_vol32_issue112_pg530-534.pdf |
| Summary: | ABSTRACT. Finite-element method is used to determine the temperature distribution within the Erebus Glacier tongue based on information from short-term observations (Holdsworth, 1982). It is shown that, provided the up-stream temperature profile along the depth is known, steady-state assumptions are reliable for computing the temperature field within most of the ice mass at any given time for a glacier tongue. Numerical results from analyses of the Erebus Glacier tongue also indicate that the main transport of heat is through advection as expected and, hence, a realistic estimate of the velocity field becomes important. RESUME. Simulation par les elements finis du regime thermique de la langue du Erebus Glacier, Antarctique. Vne methode d'elements finis est utilisee pour la determination de la distribution de temperature dans la langue du Erebus Glacier qui s'appuie sur les information des observations, Holdsworth (J 982). Cela montre que, sous reserve que le profil de temperature en profondeur soit connu a I'amont du courant, I'hypothese d'etat stationnaire apparait reellement justifiee pour le calcul du champ de temperature dans la plus gran de partie de la masse de glace a tout temps donne |
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