Difference between revisions of "HighF 2018"
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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). | 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 == | + | == Mesh Generation Rules and Parameter Constraints == |
Parameter constraints | Parameter constraints | ||
Velocities (fixing the CVM for meshing purposes) | Velocities (fixing the CVM for meshing purposes) | ||
| − | 1. Set Min Vs=500 m/s | + | * 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) | + | * 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 | + | * 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) | Lame parameters: mu and lambda (fixing the CVM for meshing purposes) | ||
| − | Rob check if raw model produces lambda of <=zero. | + | Rob to 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 | Note: typical Vp speeds are 330 m/s in air, 1450 m/s in water and about 5000 m/s in granite | ||
| Line 14: | Line 15: | ||
Frequency-independent Q definition | Frequency-independent Q definition | ||
| − | Qs=100*Vs(km/s) | + | * Qs=100*Vs(km/s) |
| − | Qp=2*Qs | + | * Qp=2*Qs |
Frequencies (5Hz): based on 500 m/s and 20 m spacing | Frequencies (5Hz): based on 500 m/s and 20 m spacing | ||
Revision as of 17:30, 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).
Contents
Mesh Generation Rules and Parameter Constraints
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 to 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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