CCA Vp/Vs Check
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
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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 Layer 15 done: highest 2.250027, lowest 1.800000 Layer 16 done: highest 2.189228, lowest 1.800001 Layer 17 done: highest 2.120443, lowest 1.800000 Layer 18 done: highest 2.091369, lowest 1.800000 Layer 19 done: highest 2.055828, lowest 1.800000 Layer 20 done: highest 2.017396, lowest 1.800000 Layer 21 done: highest 2.010814, lowest 1.800000 Layer 22 done: highest 2.024118, lowest 1.800000 Layer 23 done: highest 2.036273, lowest 1.800000 Layer 24 done: highest 2.043096, lowest 1.800000 Layer 25 done: highest 2.041644, lowest 1.800000 Layer 26 done: highest 2.044418, lowest 1.800000 Layer 27 done: highest 2.061917, lowest 1.800000 Layer 28 done: highest 2.071561, lowest 1.800001 Layer 29 done: highest 2.068432, lowest 1.800001 Layer 30 done: highest 2.056907, lowest 1.800000 Layer 31 done: highest 2.040260, lowest 1.800000 Layer 32 done: highest 2.020597, lowest 1.800000 Layer 33 done: highest 1.972157, lowest 1.800000 Layer 34 done: highest 1.938574, lowest 1.800000 Layer 35 done: highest 1.909750, lowest 1.800000 Layer 36 done: highest 1.993312, lowest 1.800000 Layer 37 done: highest 1.984997, lowest 1.800000 Layer 38 done: highest 1.967303, lowest 1.800000 Layer 39 done: highest 1.982890, lowest 1.800001 Layer 40 done: highest 1.990127, lowest 1.800000 Layer 41 done: highest 1.992635, lowest 1.800000 Layer 42 done: highest 1.991014, lowest 1.800000 Layer 43 done: highest 1.986541, lowest 1.800000 Layer 44 done: highest 1.982044, lowest 1.800001 Layer 45 done: highest 1.982634, lowest 1.800001 Layer 46 done: highest 2.001196, lowest 1.800000 Layer 47 done: highest 2.026639, lowest 1.800000 Layer 48 done: highest 2.108928, lowest 1.800000 Layer 49 done: highest 2.179043, lowest 1.800001 Layer 50 done: highest 2.198336, lowest 1.800000 Layer 51 done: highest 2.203887, lowest 1.800000 Layer 52 done: highest 2.214526, lowest 1.800000 Layer 53 done: highest 2.226863, lowest 1.800000 Layer 54 done: highest 2.238193, lowest 1.800000 Layer 55 done: highest 2.243303, lowest 1.800000 Layer 56 done: highest 2.237659, lowest 1.800000 Layer 57 done: highest 2.225866, lowest 1.800000 Layer 58 done: highest 2.213019, lowest 1.800000 Layer 59 done: highest 2.200656, lowest 1.800000 Layer 60 done: highest 2.174374, lowest 1.800000 Layer 61 done: highest 2.124905, lowest 1.800000 Layer 62 done: highest 2.108373, lowest 1.800001 Layer 63 done: highest 2.199852, lowest 1.800000 Layer 64 done: highest 2.279937, lowest 1.800001 Layer 65 done: highest 2.278781, lowest 1.800001 Layer 66 done: highest 2.253898, lowest 1.800004 Layer 67 done: highest 2.264303, lowest 1.800002 Layer 68 done: highest 2.281284, lowest 1.800001 Layer 69 done: highest 2.296623, lowest 1.800006 Layer 70 done: highest 2.307361, lowest 1.496121 Layer 71 done: highest 2.311088, lowest 1.491192 Layer 72 done: highest 2.304025, lowest 1.496422 Layer 73 done: highest 2.289724, lowest 1.800002 Layer 74 done: highest 2.271064, lowest 1.800001 Layer 75 done: highest 2.250839, lowest 1.800003 Layer 76 done: highest 2.230967, lowest 1.800001 Layer 77 done: highest 2.212325, lowest 1.800004 Layer 78 done: highest 2.195167, lowest 1.800006 Layer 79 done: highest 2.173119, lowest 1.800000 Layer 80 done: highest 2.146282, lowest 1.800000 Layer 81 done: highest 2.149513, lowest 1.800002 Layer 82 done: highest 2.148423, lowest 1.800004 Layer 83 done: highest 2.146358, lowest 1.800003 Layer 84 done: highest 2.144694, lowest 1.800002 Layer 85 done: highest 2.142890, lowest 1.800001 Layer 86 done: highest 2.141038, lowest 1.800000 Layer 87 done: highest 2.139232, lowest 1.800001 Layer 88 done: highest 2.137577, lowest 1.800003 Layer 89 done: highest 2.136106, lowest 1.800001 Layer 90 done: highest 2.134949, lowest 1.800000 Layer 91 done: highest 2.134207, lowest 1.800002 Layer 92 done: highest 2.133879, lowest 1.800001 Layer 93 done: highest 2.133765, lowest 1.800000 Layer 94 done: highest 2.133763, lowest 1.800000 Layer 95 done: highest 2.133787, lowest 1.800002 Layer 96 done: highest 2.133808, lowest 1.800007 Layer 97 done: highest 2.133835, lowest 1.800000 Layer 98 done: highest 2.133890, lowest 1.800002 Layer 99 done: highest 2.133922, lowest 1.800002