Software At SCEC Responses

Some standard responses to emails we get at software@scec.org

Using CyberShake

Dear XXX
  CyberShake makes use of a collection of scientific research codes that implement what is often termed physics-based probabilistic seismic hazard calculations. The current CyberShake system is setup to calculation PSHA models for California.
  The system is based on standard PSHA methods, but it makes use of 3D wave propagation simulations rather than Ground Motion Prediction Equations to calculate ground motions at sites of interest.
  To configure CyberShake for a region of interest, it requires region specific information including an Earthquake Rupture Forecast (ERF), and an accurate 3D velocity model for your region of interest.
  A good way to get started with CyberShake system is to perform standard PSHA calculations for sites that you are interested in. You might be able to use software like OpenQuake (from the GEM organization) to do this.
While we don’t have resources to support the porting of CyberShake to new regions, we are actively working on releasing our CyberShake data products to the community. Once those results are posted, we will be happy to help you get access to them.

Dear XXX

Thank you for your interest in SCEC’s CyberShake software. Unfortunately, SCEC does not have the resources to support groups porting CyberShake to a new region like yours.

We do have some general recommendation for research groups who are preparing to run CyberShake in a new region.
 We recommend that you first perform standard PSHA for your region.
 Once standard PSHA calculations are working for your region, then move onto running CyberShake-based PSHA.
 To run standard PSHA, you will need an earthquake rupture forecast for your region of interest. You will also need ground motion prediction equations appropriate for your region of interest. You will also probably need Vs30 and Z1.0 and Z2.5 values for your region of interest, since these are often used as part of the GMPEs.
 If you have standard PSHA methods working for your region, the next step is to develop accurate 3D wave propagation simulations in your region of interest. This will require a 3D seismic velocity model, and high performance wave propagation software (like AWP-ODC, SW4, or others).
 Once you are able to run standard PSHA calculations, and 3D earthquake wave propagation simulations for your region of interest, you have the ingredients you need to run CyberShake.
 I’m sorry that we don’t have the resource to help you setup CyberShake for your region. But we hope to hear from you when you are able to get it working for your region.

Earth Model access

Thanks for checking with SCEC about your Hazus loss planning.
As you mention, SCEC has released several earth models including fault models, seismic velocity models, and others.
Do you know which kind of earth model you are specifically looking for?
I am only a little familiar with Hazus, and I’m not sure which models it uses.
 To me, most likely, you would want fault models and seismic velocity models, but I don’t want to assume.
If you have more specifics on which models are needed for your loss planning, let us know and we will try to point you in the right direction for the most appropriate SCEC models.

Problem Reports

Thank you for reporting this issue. We have forwarded your note to the Community Fault modelers for their attention. Your feedback is greatly appreciated and it will help improve the CFM for other users.

= Related entries

• [1]