Hydroelastic analysis of ice shelves under long wave excitation
The transient hydroelastic response of an ice shelf under long wave excitation is analysed by means of the finite element method. The simple model, presented in this work, is used for the simulation of the generated kinematic and stress fields in an ice shelf, when the latter interacts with a tsunam...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2015-08-01
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| Series: | Natural Hazards and Earth System Sciences |
| Online Access: | http://www.nat-hazards-earth-syst-sci.net/15/1851/2015/nhess-15-1851-2015.pdf |
| Summary: | The transient hydroelastic response of an ice shelf under long wave
excitation is analysed by means of the finite element method. The simple
model, presented in this work, is used for the simulation of the generated
kinematic and stress fields in an ice shelf, when the latter interacts with
a tsunami wave. The ice shelf, being of large length compared to its
thickness, is modelled as an elastic Euler-Bernoulli beam, constrained at
the grounding line. The hydrodynamic field is represented by the linearised
shallow water equations. The numerical solution is based on the development
of a special hydroelastic finite element for the system of governing of
equations. Motivated by the 2011 Sulzberger Ice Shelf (SIS) calving event
and its correlation with the Honshu Tsunami, the SIS stable configuration is
studied. The extreme values of the bending moment distribution in both space
and time are examined. Finally, the location of these extrema is
investigated for different values of ice shelf thickness and tsunami wave length. |
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| ISSN: | 1561-8633 1684-9981 |