HighF 2018: Difference between revisions
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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).
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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