Memorias de investigación
Ponencias en congresos:
Modelling Experiments of the Variations of the Calving Front Position of Hansbreen, Svalbard
Año:2013
Áreas de investigación
  • Ciencias de la tierra,
  • Ciencias de la computación y tecnología informática
Datos
Descripción
Hansbreen is a tidewater glacier in Svalbard, with grounded tongue, about 16 km in length and ca. 2.5 km in width at its tongue. The calving front position has shown, over the recent decades, a general retreating trend, often rather smooth but with some occasional abrupt changes. We apply a full-Stokes model of glacier dynamics, incorporating a crevasse-depth calving model, with the aim of reproducing the glacier front positions observed since 1936 and analyzing the sensitivity of the model to environmental parameters. The model is able to reproduce quite closely the observed front position changes, though not all of the abrupt changes are captured by the model. The amount of water filling the crevasses and the bed geometry act jointly in controlling the front position changes. The front position gently evolves when the front is located in nearly-flat bed areas, while abrupt front position changes occur where the bed shows a sharp change in slope, with different amounts of water implying different timing for the abrupt changes in front position. We have also analyzed the influence of setting the amount of water in crevasses as a function of summer temperature and changes in mass balance function.
Internacional
Si
Nombre congreso
Congreso de Métodos Numéricos en Ingeniería CMN 2013,
Tipo de participación
960
Lugar del congreso
Bilbao,España
Revisores
Si
ISBN o ISSN
978-84-941531-4-3
DOI
Fecha inicio congreso
25/07/2013
Fecha fin congreso
28/07/2013
Desde la página
772
Hasta la página
772
Título de las actas
Congreso de Métodos Numéricos en Ingeniería CMN 2013, 25-28 Junio 2013, Bilbao, España. International Center for Numerical Methods in Engineering (CIMNE), Barcelona, España, 2013
Esta actividad pertenece a memorias de investigación
Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Grupo de Simulación Numérica en Ciencias e Ingeniería
  • Departamento: Matemática Aplicada a las Tecnologías de la Información