Constitutive parameters extraction for thin two‐dimensional cylinders based on scattering field measurements

2015 ◽  
Vol 9 (6) ◽  
pp. 585-592
Author(s):  
Vladimir Vulfin ◽  
Reuven Shavit
Keyword(s):  
Field Measurements ◽  
Two Dimensional ◽  
Parameters Extraction ◽  
Scattering Field ◽  
Constitutive Parameters

scholarly journals Stochastic marine ice sheet variability

2018 ◽  
Vol 843 ◽  
pp. 748-777 ◽  
Author(s):  
T. E. Mulder ◽  
S. Baars ◽  
F. W. Wubs ◽  
H. A. Dijkstra
Keyword(s):  
Transition Probabilities ◽  
Accumulation Rate ◽  
Ice Sheets ◽  
Ice Sheet ◽  
Field Measurements ◽  
Multiple Equilibrium ◽  
Short Time Scale ◽  
Two Dimensional ◽  
Grounding Line ◽  
Short Time

It is well known that deterministic two-dimensional marine ice sheets can only be stable if the grounding line is positioned at a sufficiently steep, downward sloping bedrock. When bedrock conditions favour instabilities, multiple stable ice sheet profiles may occur. Here, we employ continuation techniques to examine the sensitivity of a two-dimensional marine ice sheet to stochastic noise representing short time scale variability, either in the accumulation rate or in the sea level height. We find that in unique regimes, the position of the grounding line is most sensitive to noise in the accumulation rate and can explain excursions observed in field measurements. In the multiple equilibrium regime, there is a strong asymmetry in transition probabilities between the different ice sheet states, with a strong preference to switch to the branch with a steeper bedrock slope.

scholarly journals Two-dimensional ultrasound Doppler velocimeter for velocity field measurements of liquid metal flows

PAMM ◽  
2011 ◽  
Vol 11 (1) ◽  
pp. 649-650
Author(s):  
Sven Franke ◽  
Andreas Fischer ◽  
Lars Büttner ◽  
Jürgen Czarske ◽  
Dirk Räbiger ◽  
...  
Keyword(s):  
Velocity Field ◽  
Liquid Metal ◽  
Field Measurements ◽  
Two Dimensional ◽  
Ultrasound Doppler

MAGNETOTELLURIC RESPONSE OF LATERALLY INHOMOGENEOUS AND ANISOTROPIC MEDIA

Geophysics ◽  
1975 ◽  
Vol 40 (6) ◽  
pp. 1035-1045 ◽  
Author(s):  
I. K. Reddy ◽  
D. Rankin
Keyword(s):  
Field Measurements ◽  
Complex Model ◽  
Dimensional Structure ◽  
Impedance Tensor ◽  
Two Dimensional ◽  
Galerkin Finite Element Method ◽  
Galerkin Finite Element ◽  
The Earth ◽  
Lateral Inhomogeneity ◽  
Anisotropic Conducting

The lack of agreement between magnetotelluric field measurements and the calculations based on essentially two‐dimensional models with either anisotropy or lateral inhomogeneity necessitates a more complex model of the earth than has been previously considered. The Galerkin finite‐element method is applied to a two‐dimensional structure with a tensor conductivity. The importance of considering conductivity as a tensor is illustrated by a model consisting of an anisotropic, conducting dike embedded in an anisotropic half‐space. This model can be distinguished from an isotropic model by the nonvanishing diagonal elements of the impedance tensor, the ellipticity indices, and the skew.

scholarly journals Reconstruction of constitutive parameters in isotropic linear elasticity from noisy full-field measurements

2014 ◽  
Vol 30 (12) ◽  
pp. 125004 ◽  
Author(s):  
Guillaume Bal ◽  
Cédric Bellis ◽  
Sébastien Imperiale ◽  
François Monard
Keyword(s):  
Linear Elasticity ◽  
Field Measurements ◽  
Full Field ◽  
Constitutive Parameters

scholarly journals The Virtual Fields Method for Extracting Constitutive Parameters From Full-Field Measurements: a Review

Strain ◽  
2008 ◽  
Vol 42 (4) ◽  
pp. 233-253 ◽  
Author(s):  
M. Grédiac ◽  
F. Pierron ◽  
S. Avril ◽  
E. Toussaint
Keyword(s):  
Field Measurements ◽  
Virtual Fields Method ◽  
Full Field ◽  
Constitutive Parameters
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