I want to know the facility inside CRISIS. Is there any facilities for compute disaggregation?
Mr
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- Last Post 28 April 2018
Muktaf Haifani
posted this
21 March 2018
Content_Manager
posted this
21 March 2018
Dear Muktaf,
Thank you for your interest in R-CRISIS.
R-CRISIS is able to assess a disaggregation analysis for a certain scenario of user's interest. However, it is capable as well to compute disaggregation for a set of scenarios by means of Batch disaggregation tool available in Hazard menu.
For detailed information about this subject and the way to use it, please look up the R-CRISIS help menu.
Best regards,
M.Eng. Sebastián Giraldo Grisales
ERN
shreyasvi sekhar
posted this
27 April 2018
Dear Sir,
I am using Crisis 2015 version and I have few technical questions. 1. If the minimum cutoff magnitude in an area source is less than the minimum magnitude considered by GMPE. How does the software handle this shortcoming? Also, the same thing applies to the distance range as well. 2. Various GMPEs may choose different intensity measures such as SA or PSA. When we adopt a logic tree combination of two GMPEs expressed in two different intensity measures, how is the combination taking place? 3. The Atkinson and Boore (2006) GMPE for SCR is derived from finite-fault simulations. Crisis models the area sources as point source ruptures. But it is not clear as to how CRISIS manages rupture forecast. Does it render finite faults and calculate finite fault distance metrics and then apply GMPE or does it render the only point sources? Kindly respond at the earliest. Thanks in advance.
Content_Manager
posted this
28 April 2018
Dear Shreyasvi,
Here go the answers to your questions:
1. If the minimum cutoff magnitude in an area source is less than the minimum magnitude considered by GMPE. How does the software handle this shortcoming? Also, the same thing applies to the distance range as well.
R-CRISIS just extrapolates using the functional form of the model, under the user´s responsibility.
2. Various GMPEs may choose different intensity measures such as SA or PSA. When we adopt a logic tree combination of two GMPEs expressed in two different intensity measures, how is the combination taking place?
You cannot do a logic-tree combination if intensity measures are not exactly the same.
3. The Atkinson and Boore (2006) GMPE for SCR is derived from finite-fault simulations. Crisis models the area sources as point source ruptures. But it is not clear as to how CRISIS manages rupture forecast. Does it render finite faults and calculate finite fault distance metrics and then apply GMPE or does it render the only point sources?
In general, R-CRISIS has the capability of constructing finite ruptures that can be elliptical or rectangular. So it is not accurate to say that Crisis models area sources with point source ruptures. There are many possibilities of creating finite ruptures. In this case, R-CRISIS computes the exact distance measures (some GMPE require more than one) required by the GMPE.
Best regards,
Dr. Mario Ordaz
ERN
