Difference between revisions of "CCA Vp/Vs Check"

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Raw CSV data showing each point plotted and the value of those points can be found using the following link.  
 
Raw CSV data showing each point plotted and the value of those points can be found using the following link.  
  
−
Below is a summary of each slice and the minimum and maximum Vp/Vs for each layer.
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Below is a summary of each slice and the minimum and maximum Vp/Vs for each layer. Each layer is 500m deep. So layer 1 is surface (0m), layer 2 is 500m depth, etc.
  
 
NOTE: THE LOWEST AND HIGHEST VALUES BELOW ARE THE LOWEST AND HIGHEST OUTSIDE OF THE BOUNDARIES. SO WHEN IT SAYS LOWEST 1.8, THAT DOESN'T MEAN THE LOWEST RATIO FOUND IN THE ENTIRE LAYER WAS 1.8, IT MEANS THAT THE LOWEST ABNORMAL RATIO FOUND WAS JUST SLIGHTLY ABOVE 1.8 (I.E. THIS LAYER CONTAINS NO VALUES THAT GO BELOW 1.5).
 
NOTE: THE LOWEST AND HIGHEST VALUES BELOW ARE THE LOWEST AND HIGHEST OUTSIDE OF THE BOUNDARIES. SO WHEN IT SAYS LOWEST 1.8, THAT DOESN'T MEAN THE LOWEST RATIO FOUND IN THE ENTIRE LAYER WAS 1.8, IT MEANS THAT THE LOWEST ABNORMAL RATIO FOUND WAS JUST SLIGHTLY ABOVE 1.8 (I.E. THIS LAYER CONTAINS NO VALUES THAT GO BELOW 1.5).
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</pre>

Revision as of 00:29, 30 August 2016

In order for the CyberShake simulations to be successful and stable, the Vp/Vs ratio needs to be calculated. Too low or too high of a ratio is scientifically inaccurate and can cause instabilities within the wave propagation simulation codes.

Maps of Surface

Cca cs vp surface.png Cca cs vs surface.png Cca cs vp vs ratio surface.png

Vp/Vs Ratio Data

The Vp/Vs ratio was plotted for each layer (500m depth) within the CCA model. The bounds are 1.5 and 1.8. Locations where the ratio is less than 1.5 are plotted in blue. Locations where the ratio is greater than 1.8 are plotted in red. Because these are large plots, an example is shown below, but the entire plot set can be downloaded from the following link:

Raw CSV data showing each point plotted and the value of those points can be found using the following link.

Below is a summary of each slice and the minimum and maximum Vp/Vs for each layer. Each layer is 500m deep. So layer 1 is surface (0m), layer 2 is 500m depth, etc.

NOTE: THE LOWEST AND HIGHEST VALUES BELOW ARE THE LOWEST AND HIGHEST OUTSIDE OF THE BOUNDARIES. SO WHEN IT SAYS LOWEST 1.8, THAT DOESN'T MEAN THE LOWEST RATIO FOUND IN THE ENTIRE LAYER WAS 1.8, IT MEANS THAT THE LOWEST ABNORMAL RATIO FOUND WAS JUST SLIGHTLY ABOVE 1.8 (I.E. THIS LAYER CONTAINS NO VALUES THAT GO BELOW 1.5). 

Layer 1 done: highest 2.276874, lowest 1.385986
Layer 2 done: highest 2.282521, lowest 1.452511
Layer 3 done: highest 2.248679, lowest 1.450000
Layer 4 done: highest 2.197622, lowest 1.450000
Layer 5 done: highest 2.151196, lowest 1.450313
Layer 6 done: highest 2.213241, lowest 1.450666
Layer 7 done: highest 2.243136, lowest 1.484539
Layer 8 done: highest 2.271273, lowest 1.494432
Layer 9 done: highest 2.293223, lowest 1.493914
Layer 10 done: highest 2.310672, lowest 1.498863
Layer 11 done: highest 2.320419, lowest 1.800000
Layer 12 done: highest 2.323637, lowest 1.800001
Layer 13 done: highest 2.315065, lowest 1.800000
Layer 14 done: highest 2.298013, lowest 1.800000
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