GEM tools in Practice Examples from Papua New Guinea
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Geoscience Australia is working with Papua New Guinea to develop earthquake scenarios and a national seismic hazard map using open-source GEM tools. Under an agreement with DFAT, Geoscience Australia is strengthening Papua New Guinea's capacity to create earthquake scenarios and develop the first national seismic hazard map. The seismic hazard assessment uses a source model with 24 area sources, 2 complex faults, 53,186 point sources, and 4 tectonic regimes. Probabilistic seismic hazard maps of PNG were created using the OpenQuake engine and 11 ground motion prediction equations.
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GEM tools in Practice Examples from Papua New Guinea
- 1. GEM tools in Practice Examples from Papua New Guinea Andrew Jones
- 2. Seismic Hazard in PNG? Seismic Hazard Assessment of Papua New Guinea
- 3. Seismic Risk in PNG? Seismic Hazard Assessment of Papua New Guinea
- 4. GA’s role Under Record of Understanding No. 51172 between Geoscience Australia and DFAT, GA is committed to • Strengthening capacity in Papua New Guinea to develop earthquake scenarios • Develop the national seismic hazard map of Papua New Guinea Seismic Hazard Assessment of Papua New Guinea
- 5. Why GEM? Free, publically available and open-source Tools/products are reasonably well-documented Scenario and probabilistic seismic hazard and risk Allows calculations at many scales Runs on a single laptop as well as on a cloud Technical support service Geoscience Australia has signed a collaborative agreement with GEM as a public partner
- 6. Tools/Products OpenQuake hazard engine GEM global historical earthquake archive and catalogue ISC-GEM global instrumental earthquake catalogue GEM global active faults database Hazard Modeller’s Toolkit
- 7. GA’s role Under Record of Understanding No. 51172 between Geoscience Australia and DFAT, GA is committed to • Strengthening capacity in Papua New Guinea to develop earthquake scenarios Seismic Hazard Assessment of Papua New Guinea Scenario Accounting for spatial correlation Supporting multiple operating systems × Built-in user-interface ×
- 8. Earthquake scenarios for PNG Seismic Hazard Assessment of Papua New Guinea
- 9. Earthquake scenarios for PNG Seismic Hazard Assessment of Papua New Guinea
- 10. Earthquake scenarios for PNG Seismic Hazard Assessment of Papua New Guinea
- 11. GA’s role Under Record of Understanding No. 51172 between Geoscience Australia and DFAT, GA is committed to • Develop the national seismic hazard map of Papua New Guinea Seismic Hazard Assessment of Papua New Guinea Classical PSHA Deaggregation Uniform Hazard Spectrum Flexible logic-tree structure Supporting multiple operating systems × Built-in user-interface ×
- 12. Input model Seismic Hazard Assessment of Papua New Guinea Source Model A GM11 GM12 GM13 GM21 GM22 GM23 GM31 GM32 GM33 GM41 GM42 Source Model B
- 13. Seismic Hazard Assessment of Papua New Guinea No. of Area-Sources: 24 (18 shallow, 6 deep) No. of Complex-Faults: 2 (along New Britain Trench) No. of Tectonic regimes: 4 (Active Shallow Crust, Subduction-Interface, Subduction-Intraslab, Stable Shallow Crust) GEM global historical earthquake archive and catalogue ISC-GEM global instrumental earthquake catalogue GEM global active faults database Hazard Modeller’s Toolkit
- 14. Seismic Hazard Assessment of Papua New Guinea No. of Point-Sources: 53,186 (shallow and deep) No. of Tectonic regimes: 4 (Active Shallow Crust, Subduction-Interface, Subduction-Intraslab, Stable Shallow Crust) GEM global historical earthquake archive and catalogue ISC-GEM global instrumental earthquake catalogue Hazard Modeller’s Toolkit
- 15. Seismic Hazard Assessment of Papua New Guinea No. of Tectonic regimes: 4 Active Shallow Crust: 3 GMPEs Subduction-Interface: 3 GMPEs Subduction-Intraslab: 3 GMPEs Stable Shallow Crust: 2 GMPEs Supported Ground-Motion Prediction Equations by OQ Ground-Motion Prediction Equations project
- 16. Probabilistic seismic hazard map of PNG Seismic Hazard Assessment of Papua New Guinea
- 17. Probabilistic seismic hazard map of PNG Seismic Hazard Assessment of Papua New Guinea
- 18. Probabilistic seismic hazard map of PNG Seismic Hazard Assessment of Papua New Guinea
- 19. Probabilistic seismic hazard map of PNG Seismic Hazard Assessment of Papua New Guinea
- 20. Probabilistic seismic hazard map of PNG Seismic Hazard Assessment of Papua New Guinea
- 21. Probabilistic seismic hazard map of PNG Seismic Hazard Assessment of Papua New Guinea
- 22. Probabilistic seismic hazard map of PNG Seismic Hazard Assessment of Papua New Guinea
- 23. Insert Title Here <view/master/slidemaster> Acknowledgement
Editor's Notes
- In PoM Previously, using commercial softwares (could not maintain any more) Not a black box (for second item) Fit the purpose of this project Join google group community
- Specific tools and products used in the PNG study Bottom two under development looked at them but didn’t apply in this case
- Modules of OQ hazard engine that we used for this task Challenges: Just supported on Ubuntu OS And no user interface so hard for capacity building from low level
- Developed GUI to overcome challnege
- Core is OQ but we added some new features to it to make it suitable to our clients Eg. scaling relationsjhip if they don’t have a soucre mo0del so can use empirical relationships If no local VS30 can use USGS used another ground motion to intentisty conversion eq to convert OQ output to MMI
- As above for 2nd outcome
- Logic tree is to capture epistemic uncertainty This is the logic tree we used in PNG study
- Figure shows 18 shallow These are the GEM products we used along with other references to model source model A
- Smoothed or gridded seismicity Eg for New Briatin, red points are seismic sources
- Each tecntonic regime has 3 or 2 different ground motion models, all GMPEs supported by OQ Seismic hazard map showing level of peak ground acceleration
- Workshop showing map
- Wrote a python wrapper around all probabilistic seismic prodcuts to visualise
- PGA hazard map
- Or the hazard curve for a particular location (can change vs30 value and target parameter eg. spectral acceleration)
- To select scenario for different site conditions, target parameter and return periods
- Uniform hazard spectrum can be used as a design spectrum same flexibitiliyy