1 / 10

OpenSHA A Developing, Distributed Community-Modeling Environment for Seismic Hazard Analysis

OpenSHA A Developing, Distributed Community-Modeling Environment for Seismic Hazard Analysis. GOAL: A general framework where any arbitrarily complex (e.g., physics based) rupture-forecast or ground-motion model can “plug in” for analysis without having to change what’s being plugged into.

noelle
Télécharger la présentation

OpenSHA A Developing, Distributed Community-Modeling Environment for Seismic Hazard Analysis

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. OpenSHAA Developing, DistributedCommunity-Modeling Environment for Seismic Hazard Analysis GOAL: A general framework where any arbitrarily complex (e.g., physics based) rupture-forecast or ground-motion model can “plug in” for analysis without having to change what’s being plugged into.

  2. OpenSHA Web Site: www.OpenSHA.org SHA Framework: SRL submission (Field, Jordan, & Cornell) Design Evaluation: SCEC Implementation Interface Code Development : Ned Field, Sid Hellman, Steve Rock, Nitin Gupta, & Vipin Gupta Validation: PEER Working-Group Test Cases

  3. OpenSHA Time Span Desired output is the probability that something of concern will happen over a specified time span Earthquake- Rupture Forecast Generates Rupture Sources IM Rupn,i Site Type, Level Each Source has N Earthquake Ruptures Sourcei Intensity-Measure Relationship Probability of occurrence

  4. OpenSHA • Intensity-Measure Type/Level • a specification of what the analyst (e.g., engineer) is worried about Time Span Earthquake- Rupture Forecast Generates Rupture Sources IM Rupn,i Site Type, Level Each Source has N Earthquake Ruptures Sourcei Intensity-Measure Relationship Probability of occurrence

  5. OpenSHA • Site&Prob. Eqk Rupture • The two main physical objects used in the analysis Time Span Earthquake- Rupture Forecast Generates Rupture Sources IM Rupn,i Site Type, Level Each Source has N Earthquake Ruptures Sourcei Intensity-Measure Relationship Probability of occurrence

  6. OpenSHA • Eqk Rupture Forecast • One of the two main model components (A variety being developed in RELM). Time Span Earthquake- Rupture Forecast Generates Rupture Sources IM Rupn,i Site Type, Level Each Source has N Earthquake Ruptures Sourcei Intensity-Measure Relationship Probability of occurrence

  7. OpenSHA • Intensity-Measure Relationship • The other major model component (also a variety available or being developed). Time Span Earthquake- Rupture Forecast Generates Rupture Sources IM Rupn,i Site Type, Level Each Source has N Earthquake Ruptures Sourcei Intensity-Measure Relationship Probability of occurrence

  8. A Community-Modeling Environment for Seismic Hazard Analysis Figure 1 Time Span OpenSHA Rupturen,i Magnitude Probability Ave. Rake Rup. Surface Hypocenter Param. List Earthquake- Rupture Forecast Source1 Source2 Sourcei SourceI Site Location List of Site- Related Parameters Intensity Measure Type & Level (IMT & IML) … … Sourcei Rupture1,i Rupture2,i Rupturen,i RuptureN,i Intensity-Measure Relationship List of Supported Intensity-Measure Types List of Site-Related Independent Parameters … … Rupture probability Conditional probability of exceedance

  9. Various IMR types (subclasses) Classic IMRs Gaussian dist. is assumed; mean and std. dev. computed from various parameters AKA: “attenuation relationship” IMT, IML(s) Rupture Site(s) Multi-Site IMRs compute joint prob. of exceeding IML(s) at multiple sites Intensity-Measure Relationship List of Supported IMTs List of Site-Related Ind. Params Vector IMRs compute joint prob. of exceeding multiple IMLs Simulation IMRs exceed. prob. computed using a suite of synthetic seismograms

  10. User Perspective: Earthquake- Rupture Forecast List of Adjustable Parameters Intensity-Measure Relationship List of Supported Intensity-Measure Types List of Site-Related Independent Parameters Site Location List of Site- Related Parameters Intensity Measure Type & Level (IMT & IML) Time Span Number-Crunching Machine Prob(IMT≥IML)

More Related