Difference between revisions of "HighF 2018"
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== Mesh Generation Rules == | == Mesh Generation Rules == | ||
| − | + | Parameter constraints | |
| + | Velocities (fixing the CVM for meshing purposes) | ||
| + | 1. Set Min Vs=500 m/s | ||
| + | 2. If Vs was lower than 500 m/s and adjusted, then adjust Vp with original Vp/Vs ratio (so that we don’t have the automatic Vs/Vp of 3). We may want to set a minimum value of Vp (Rob to check) | ||
| + | 3. Then set Max Vp/Vs= 3, if lower Vp to maintain the max of 3 ratio | ||
| + | Lame parameters: mu and lambda (fixing the CVM for meshing purposes) | ||
| + | Rob check if raw model produces lambda of <=zero. | ||
| + | |||
| + | Note: typical Vp speeds are 330 m/s in air, 1450 m/s in water and about 5000 m/s in granite | ||
| + | Lambda of zero corresponds to Vp/Vs= sqrt(2)=1.45; | ||
| + | |||
| + | Frequency-independent Q definition | ||
| + | Qs=100*Vs(km/s) | ||
| + | Qp=2*Qs | ||
| + | |||
| + | Frequencies (5Hz): based on 500 m/s and 20 m spacing | ||
| + | Kim and Rob have been low-pass filtering the slip function at 5 Hz | ||
| + | Ricardo and Naeem don’t filter the source | ||
| + | |||
Revision as of 17:29, 5 March 2018
This page documents the High-F activities and decisions for the 2018 verification and validation runs for three groups: Olsen et al. (AWP), Graves (RWG) and Taborda et al. (Hercules).
Mesh Generation Rules
Parameter constraints Velocities (fixing the CVM for meshing purposes) 1. Set Min Vs=500 m/s 2. If Vs was lower than 500 m/s and adjusted, then adjust Vp with original Vp/Vs ratio (so that we don’t have the automatic Vs/Vp of 3). We may want to set a minimum value of Vp (Rob to check) 3. Then set Max Vp/Vs= 3, if lower Vp to maintain the max of 3 ratio Lame parameters: mu and lambda (fixing the CVM for meshing purposes) Rob check if raw model produces lambda of <=zero.
Note: typical Vp speeds are 330 m/s in air, 1450 m/s in water and about 5000 m/s in granite Lambda of zero corresponds to Vp/Vs= sqrt(2)=1.45;
Frequency-independent Q definition Qs=100*Vs(km/s) Qp=2*Qs
Frequencies (5Hz): based on 500 m/s and 20 m spacing Kim and Rob have been low-pass filtering the slip function at 5 Hz Ricardo and Naeem don’t filter the source
Source Models
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