Aspects of cylindrical shell resonances in the Fourier diamond spaces. Use of surface wave analysis methods (SWAM) on experimental or numerical datas

1998 ◽  
Vol 103 (5) ◽  
pp. 2901-2902
Author(s):  
Loïc Martinez ◽  
Jean Duclos ◽  
Alain Tinel
Keyword(s):  
Cylindrical Shell ◽  
Surface Wave ◽  
Wave Analysis ◽  
Analysis Methods

Determining hydrological and soil mechanical parameters from multichannel surface-wave analysis across the Alpine Fault at Inchbonnie, New Zealand

2013 ◽  
Vol 11 (4) ◽  
pp. 435-448 ◽  
Author(s):  
L.A. Konstantaki ◽  
S. Carpentier ◽  
F. Garofalo ◽  
P. Bergamo ◽  
L.V. Socco
Keyword(s):  
New Zealand ◽  
Surface Wave ◽  
Mechanical Parameters ◽  
Wave Analysis ◽  
Alpine Fault

Shallow crustal models in the Lisbon area from explosion data using body and surface wave analysis

1996 ◽  
Vol 258 (1-4) ◽  
pp. 171-193 ◽  
Author(s):  
P. Teves-Costa ◽  
L. Matias ◽  
C.S. Oliveira ◽  
L.A. Mendes-Victor
Keyword(s):  
Surface Wave ◽  
Wave Analysis

Extreme wave analysis methods in the gulf of Cagliari (South Sardinia, Italy)

2017 ◽  
Vol 140 ◽  
pp. 79-87 ◽  
Author(s):  
Andrea Sulis ◽  
Riccardo Cozza ◽  
Antonio Annis
Keyword(s):  
Wave Analysis ◽  
Extreme Wave ◽  
Analysis Methods

Errors Introduced in Estimation of Surface Wave Phase and Group Velocities Due to Wrong Assumptions: An Assessment Using a Simple Model For Love Wave

2021 ◽  
Author(s):  
Akash Kharita ◽  
Sagarika Mukhopadhyay
Keyword(s):  
Surface Wave ◽  
Surface Waves ◽  
Love Wave ◽  
Arrival Time ◽  
Epicentral Distance ◽  
Horizontal Distance ◽  
Wave Analysis ◽  
Time Period ◽  
Phase And Group Velocities ◽  
Group Velocities

<p>The surface wave phase and group velocities are estimated by dividing the epicentral distance by phase and group travel times respectively in all the available methods, this is based on the assumptions that (1) surface waves originate at the epicentre and (2) the travel time of the particular group or phase of the surface wave is equal to its arrival time to the station minus the origin time of the causative earthquake; However, both assumptions are wrong since surface waves generate at some horizontal distance away from the epicentre. We calculated the actual horizontal distance from the focus at which they generate and assessed the errors caused in the estimation of group and phase velocities by the aforementioned assumptions in a simple isotropic single layered homogeneous half space crustal model using the example of the fundamental mode Love wave. We took the receiver locations in the epicentral distance range of 100-1000 km, as used in the regional surface wave analysis, varied the source depth from 0 to 35 Km with a step size of 5 km and did the forward modelling to calculate the arrival time of Love wave phases at each receiver location. The phase and group velocities are then estimated using the above assumptions and are compared with the actual values of the velocities given by Love wave dispersion equation. We observed that the velocities are underestimated and the errors are found to be; decreasing linearly with focal depth, decreasing inversely with the epicentral distance and increasing parabolically with the time period. We also derived empirical formulas using MATLAB curve fitting toolbox that will give percentage errors for any realistic combination of epicentral distance, time period and depths of earthquake and thickness of layer in this model. The errors are found to be more than 5% for all epicentral distances lesser than 500 km, for all focal depths and time periods indicating that it is not safe to do regional surface wave analysis for epicentral distances lesser than 500 km without incurring significant errors. To the best of our knowledge, the study is first of its kind in assessing such errors.</p>

scholarly journals Pulse Wave Analysis to Estimate Cardiac Output

2020 ◽  
Vol 134 (1) ◽  
pp. 119-126 ◽  
Author(s):  
Karim Kouz ◽  
Thomas W. L. Scheeren ◽  
Daniel de Backer ◽  
Bernd Saugel
Keyword(s):  
Cardiac Output ◽  
Minimally Invasive ◽  
Real Time ◽  
Pulse Wave ◽  
Pulse Wave Analysis ◽  
Wave Analysis ◽  
Analysis Methods ◽  
Time Pulse

Pulse wave analysis enables cardiac output to be estimated continuously and in real time. Pulse wave analysis methods can be classified into invasive, minimally invasive, and noninvasive and into externally calibrated, internally calibrated, and uncalibrated methods.

Surface Wave Analysis in Laterally Varying Media

2011 ◽  
Author(s):  
Laura Valentina Socco ◽  
Paolo Bergamo ◽  
Daniele Boiero
Keyword(s):  
Surface Wave ◽  
Wave Analysis

Parallelisation of the SWAN surface wave analysis code

1996 ◽  
pp. 36-42
Author(s):  
A. Braathen ◽  
J. Cook ◽  
A. C. Damhaug ◽  
M. T. Rahman ◽  
O. Sævareid
Keyword(s):  
Surface Wave ◽  
Wave Analysis

scholarly journals On the flow of polythermal glaciers. II. Surface wave analysis

1980 ◽  
Vol 370 (1741) ◽  
pp. 155-171 ◽  
Keyword(s):  
Surface Wave ◽  
Hyperbolic Equation ◽  
Large Scale ◽  
Reduced Model ◽  
Nonlinear Hyperbolic Equation ◽  
Wave Analysis ◽  
Valley Glacier ◽  
Kinematic Waves ◽  
Surface Disturbance ◽  
Formation And Evolution

We show how the ‘reduced’ model developed in part I of this paper may be used to derive a nonlinear hyperbolic equation which describes the passage of kinematic waves along the surface of a valley glacier. Qualitative descriptions of large-scale snout movements and the formation and evolution of surface shocks are found from this approach, and earlier results of Nye (1960) are reproduced in the limit where surface disturbance amplitudes are ‘small’.

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