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Application of TWGrid on Taiwan Seismology

ISGC 2006. Application of TWGrid on Taiwan Seismology. Wen-Tzong Liang 1 Wei-Long Ueng 2 Eric Yen 2 Institute of Earth Sciences, Academia Sinica, Taiwan Academia Sinica Grid Computing Centre, Taiwan wtl@earth.sinica.edu.tw http://dmc.earth.sinica.edu.tw. ISGC 2006. Outline.

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Application of TWGrid on Taiwan Seismology

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  1. ISGC 2006 Application of TWGrid on Taiwan Seismology Wen-Tzong Liang1 Wei-Long Ueng2 Eric Yen2 Institute of Earth Sciences, Academia Sinica, Taiwan Academia Sinica Grid Computing Centre, Taiwan wtl@earth.sinica.edu.tw http://dmc.earth.sinica.edu.tw

  2. ISGC 2006 Outline • Taiwan Earthquake Activity • Integrated Seismic Data Center • Computational Seismology • TWGrid vs. Taiwan Seismological Community • Examples • Summary

  3. ISGC 2006 Taiwan Earthquake Activity

  4. ISGC 2006 Broadband Array in Taiwan for Seismology (BATS) • Since 1995 • by IES and CWB (since 2001) • > 50 stations • Real-time • Open data

  5. ISGC 2006 IES Seismic Arrays Taipei Stations SMA CMA S-Line SMART1 • Continuous or triggered data streams • 100-250 samples/sec • 3-6 channels/station Huang, 2006

  6. Characteristics of Seismological Data • Continuous/triggered recordings • High sampling rate (100 ~250 sps) • Multi sensor (BH/ BL/ SP) • 3 components • Co-site geophysical measurements • GPS/ Magnetotelluric/ Geomagnetic/ Gravity/ Strainmeter /… • Other data products/ scientific results • Seismicity/ Tomography/ Seismogenic structures/ …

  7. ISGC 2006 Integrated Seismic Data Center • Data Acquisition and Archiving • Huge amount of seismic waveform data • Other relevant datasets • On-Line Data Sharing • Grid portal/ SRB-based Digital Library • Presentation/Visualization => Data Grid – reliable, scalable, efficient • Intensive Computing/ Web Service => Computing Grid SeisGrid

  8. ISGC 2006 Taiwan Earthquake Research Center (TEC) Objectives: • Approved by NSC in 2005 • Integrating resources for seismologists • Web service to researchers • Project Management/ RFP • TEC Instrument Pool • TEC Data Center • Outreach/Education

  9. ISGC 2006 TEC Data Center Portal Architecture Archiving Sharing Presentation Data Grid Relevant datasets Waveform and CMT Databases

  10. ISGC 2006 TEC SRB-based Digital Library Quick Focal Mechanism Determination Outputs Waveform Simulation TEC Community Library Seismogram Retrieval Inversion of Slip Distribution on Fault Plane 1999 Chi-Chi Taiwan Earthquake SRB-based Digital Library • 9 Terabytes of on-line disk • More than 100 Terabytes of tape archive

  11. Grid Computing Element ISGC 2006 SeisGrid Architecture Web-Based Portal User Interface Data Acquisition Archiving/Sharing Data Grid Job repository User/Grid Proxy Manager Virtual Queuing System SRB-based Digital Library IESAS Sensors Grid Agent CWB Grid Computing Element

  12. ISGC 2006 Data Requesting System

  13. Data Product Visualization 3D Taiwan Seismicity Date ML VRML vs. Web3D Viewer Subduction Subduction

  14. ISGC 2006 Computing Needs • Focal mechanism inversion (CMT) • Seismogenic structure/ Earthquake pattern • Finite source inversion • Slip distribution on the fault • Earthquake physics • Simulation of seismic wave propagation • Seismic source mechanism inversion • Shake map prediction

  15. ISGC 2006 Quick BATS CMT Solution http://bats.earth.sinica.edu.tw

  16. ISGC 2006 S.-J. Lee, 2006

  17. ISGC 2006 Finite Source Inversion and 3D Wave Propagation S.-J. Lee, 2005

  18. ISGC 2006 Seismic Wave Propagation • SAFE-Taipei project (Urban Seismology) • Collaboration between IES and Caltech • Spectral-Element Method (SEM) IPGP/Europe • Considering: • Near-field waveform modeling • Higher frequency -> Higher resolution -> Higher computing need • 3D Velocity Structure • 3D Source Model • Surface Topography • Example #1(S.-J. Lee, 2006) • Example #2 (S.-J. Lee, 2006)

  19. ISGC 2006 N • 3D Velocity Structure • Surface Topography S.-J. Lee, 2006

  20. ISGC 2006 Taipei Basin • High frequency seismic wave modeling (~1 Hz) S.-J. Lee, 2006

  21. ISGC 2006 Taipei Basin Seismic Hazard Mitigation Ilan Plain S.-J. Lee, 2006

  22. ISGC 2006 Summary • Modern development of seismic instrumentation, IT and communication make it possible to establish an efficient and reliable real-time data acquisition systems and virtual data centers. • Huge amount of seismic data archiving/sharing play as the basis of the modern seismological research. • Demands in rapid seismic data sharing and processing require intensive collaboration between Taiwan seismological community and TWGrid. • SeisGrid concept is proposed to meet the future need.

  23. ISGC 2006 The End!

  24. 1973~1991 (IES) 1990~ (CWB) Short-period Seismic Array > 70 stations

  25. Taiwan Strong Motion Instrumentation Program(TSMIP) > 650 stations

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