Modelo elemental de flujo de un fluido viscoso elástico. El glaciar Bahía del Diablo: Parte II
Throughout this paper we focus the detailed study of the dynamics of a large body of ice of non-uniform density that, owing to the stresses produced by its own weight, deforms and flows over an inclined bed. This first-order approximation to the overall behavior of a glacier is achieved by assumi...
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| Autores principales: | , , |
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| Formato: | Artículo publisherVersion |
| Lenguaje: | Español |
| Publicado: |
2021
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12272/5632 |
| Aporte de: |
| Sumario: | Throughout this paper we focus the detailed study of the dynamics of a large body of ice of
non-uniform density that, owing to the stresses produced by its own weight, deforms and
flows over an inclined bed. This first-order approximation to the overall behavior of a glacier
is achieved by assuming that the mathematical profile of the glacier bed is known. We apply
the formalism to “Bahía del Diablo” glacier (Vega island, located in the Argentinean sector of
Antarctic) whose bed profile was derived from measurements made by means of a portable
radar. The part of the glacier bed that we shall analyze is approximated by a bijective function,
in this case a curve of the form z= a−1y3/2. We introduce ice density variations through a linear
function. Surface velocities were also measured in situ. We find differences between measured
and calculated values, which likely arise from glacier base sliding velocity, a mechanism that
we do not consider in this work. |
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