scholarly journals Time dependent mechanical crack closure as a potential rapid source of post‐seismic wave speed recovery : insights from experiments in Carrara marble

2021 ◽  
Author(s):  
Gabriel G. Meyer ◽  
Nicolas Brantut ◽  
Thomas M. Mitchell ◽  
Philip G. Meredith ◽  
Oliver Plümper
Keyword(s):  
Crack Closure ◽  
Seismic Wave ◽  
Wave Speed ◽  
Time Dependent ◽  
Carrara Marble ◽  
Mechanical Crack

scholarly journals The influence of microstructure on seismic wave speed anisotropy in the crust: computational analysis of quartz-muscovite rocks

2011 ◽  
Vol 185 (2) ◽  
pp. 609-621 ◽  
Author(s):  
Félice M. J. Naus-Thijssen ◽  
Andrew J. Goupee ◽  
Senthil S. Vel ◽  
Scott E. Johnson
Keyword(s):  
Seismic Wave ◽  
Wave Speed ◽  
Computational Analysis

scholarly journals Seismic wave properties in time-dependent porosity homogeneous media

2007 ◽  
Vol 170 (3) ◽  
pp. 1227-1242 ◽  
Author(s):  
G. Quiroga-Goode ◽  
R. Padilla-Hernández ◽  
S. Jiménez-Hernández
Keyword(s):  
Seismic Wave ◽  
Time Dependent ◽  
Homogeneous Media ◽  
Wave Properties

scholarly journals Improving temporal resolution in ambient noise monitoring of seismic wave speed

2011 ◽  
Vol 116 (B7) ◽  
Author(s):  
C. Hadziioannou ◽  
E. Larose ◽  
A. Baig ◽  
P. Roux ◽  
M. Campillo
Keyword(s):  
Temporal Resolution ◽  
Seismic Wave ◽  
Ambient Noise ◽  
Wave Speed

Lp-estimates for the wave equation with time-dependent dissipation

2005 ◽  
Vol 135 (2) ◽  
pp. 393-412
Author(s):  
Tokio Matsuyama
Keyword(s):  
Wave Equation ◽  
Exterior Domain ◽  
Wave Speed ◽  
Energy Decay ◽  
Time Dependent ◽  
Local Energy ◽  
Lp Estimates ◽  
Dissipative Wave Equation ◽  
Scattering Rates

We are interested in Lp-estimates and scattering rates for the dissipative wave equation with time-dependent coefficients in an exterior domain outside a star-shaped obstacle. We want to notice the case that the support of dissipation expands strictly less than the wave speed. We develop a new cut-off method, which is time dependent. For this, we shall obtain the local energy decay over the time-dependent subdomain

scholarly journals Inferring the thermomechanical state of the lithosphere using geophysical and geochemical observables

2021 ◽  
Author(s):  
◽  
William J. Shinevar
Keyword(s):  
Seismic Wave ◽  
Wave Speed ◽  
Bulk Composition ◽  
Normal Faults ◽  
Compositional Variation ◽  
Total Variability ◽  
Forward Calculation ◽  
Composition I ◽  
Relationship Of ◽  
Lower Crustal

This thesis focuses on interpreting geophysical and geochemical observables in terms of the thermomechanical state of the lithosphere. In Chapter 1, I correlate lower crustal rheology with seismic wave speed. Compositional variation is required to explain half of the total variability in predicted lower crustal stress, implying that constraining regional lithology is important for lower crustal geodynamics. In Chapter 2, I utilize thermobarometry, diffusion models, and thermodynamic modelling to constrain the ultra-high formation conditions and cooling rates of the Gore Mountain Garnet Amphibolite in order to understand the rheology of the lower crust during orogenic collapse. In Chapter 3, I interpret geophysical data along a 74 Myr transect in the Atlantic to the temporal variability and relationship of crustal thickness and normal faults. In Chapter 4, I constrain the error present in the forward-calculation of seismic wave speed from ultramafic bulk composition. I also present a database and toolbox to interpret seismic wave speeds in terms of temperature and composition. Finally, in Chapter 5 I apply the methodology from Chapter 4 to interpret a new seismic tomographic model in terms of temperature, density, and composition in order to show that the shallow lithospheric roots are density unstable.

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