Three-dimensional modelling of calving processes on Johnsons Glacier, Livingston Island, Antarctica.

Otero García, Jaime and Navarro Valero, Francisco Jose and Martin, Carlos and Cuadrado Ebrero, Maria Luisa and Corcuera Labrado, Maria Isabel (2010). Three-dimensional modelling of calving processes on Johnsons Glacier, Livingston Island, Antarctica.. In: "7th EGU General Assembly, Geophysical Research Abstracts", 02/05/2010 - 07/05/2010, Viena, Austria.

Description

Title: Three-dimensional modelling of calving processes on Johnsons Glacier, Livingston Island, Antarctica.
Author/s:
  • Otero García, Jaime
  • Navarro Valero, Francisco Jose
  • Martin, Carlos
  • Cuadrado Ebrero, Maria Luisa
  • Corcuera Labrado, Maria Isabel
Item Type: Presentation at Congress or Conference (Article)
Event Title: 7th EGU General Assembly, Geophysical Research Abstracts
Event Dates: 02/05/2010 - 07/05/2010
Event Location: Viena, Austria
Title of Book: Proceedings of the 7th EGU General Assembly, Geophysical Research Abstracts
Date: 2010
Volume: 12
Subjects:
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Matemática Aplicada a las Tecnologías de la Información [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Iceberg calving is an important mass loss mechanism from ice shelves and tidewater glaciers for many mid and high-latitude glaciers and ice caps, yet the process is not well represented in prognostic models of ice dynamics. Benn and others (2007) proposed a calving criterion appropriate for both grounded and floating glacier tongues or ice shelves. This criterion assumes that the calving is triggered by the downward propagation of transverse surface crevasses, near the calving front, as a result of the extensional stress regime. The crevasse depth is calculated following Nye (1957), assuming that the base of a field of closely spaced crevasses lies at a depth where the longitudinal tensile strain rate tending to open the crevasse equals the creep closure resulting from the ice overburden pressure.

More information

Item ID: 9176
DC Identifier: http://oa.upm.es/9176/
OAI Identifier: oai:oa.upm.es:9176
Official URL: http://meetings.copernicus.org/egu2010
Deposited by: Memoria Investigacion
Deposited on: 11 Nov 2011 12:14
Last Modified: 20 Apr 2016 17:41
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