EarthWorm at the NEIC and beyond

1. EarthWorm at the NEICand beyond Paul Earle USGS Golden, Colorado

2. Topics • Network seismology features • Applications beyond network seismology • Research possibilities

3. Earthworm is 900,000 lines of code distributed in hundreds modules that takes you from the back of a digitizer to a color picture on the BBC while distributing and archiving products along the way.

5. Supported platforms Solaris and NT • Web accessible review • Scalable from one to thousands of channels • Broad community input and support • Separable mission-critical and public functions • Primary use network seismology • Rapidly expanding to other fields

6. Automatic: Stable architecture • Interactive: Growth area

7. Realtime data exchange

8. Association, location,and magnitude estimation

9. Other core realtime processing functionality • Acquisition from most commercial seismic data loggers • Notification/alarms • System health monitoring • Wave viewer

10. Client-server based data transfer (waveservers) Record sections Moment tensors Product development

12. Quick review

13. Recent earthquake maps

14. Recent earthquake maps (waveforms too)

15. Helicorder displays

16. Shake map and CIIM support

17. Beyond network seismology

18. Beyond network seismology • Volcano monitoring • Lahar warning • Tsunami warning • Geomagnetic storm monitoring • Temporary arrays • Aftershock monitoring • Visitor displays Photograph by Marcos Coaya Coatl

19. Beyond network seismology • Volcano monitoring • Lahar warning • Tsunami warning • Geomagnetic storm monitoring • Temporary arrays • Aftershock monitoring • Visitor displays illustration modified from J. Vigil

20. Beyond network seismology • Volcano monitoring • Lahar warning • Tsunami warning • Geomagnetic storm monitoring • Temporary arrays • Aftershock monitoring • Visitor displays illustration modified from J. Vigil Drawing by Pierre Mion "Popular Science”,1971, page 62

21. Beyond network seismology • Volcano monitoring • Lahar warning • Tsunami warning • Geomagnetic storm monitoring • Temporary arrays • Aftershock monitoring • Visitor displays

22. Beyond network seismology • Volcano monitoring • Lahar warning • Tsunami warning • Geomagnetic storm monitoring • Temporary arrays • Aftershock response • Visitor displays

23. Beyond network seismology • Volcano monitoring • Lahar warning • Tsunami warning • Geomagnetic storm monitoring • Temporary arrays • Aftershock response • Visitor displays

24. Beyond network seismology • Volcano monitoring • Lahar warning • Tsunami warning • Geomagnetic storm monitoring • Temporary arrays • Aftershock monitoring • Visitor displays

25. Current development focus • Seamless real-time integration of regional and national network waveform and parametric data • State-driven DBMS processing • Real-time transport of other geophysical sensor data (e.g. GPS, magnetometer, tide gauge, tiltmeter, and acoustic flow monitors) • Development of a browser-based GUI for earthquake review and catalog production • Client-server applications for monitoring system functions (e.g. waveform latency, real-time earthquake locations, state-of-health)

26. Now what? Now that it is possible to access thousands of channels of data in realtime using earthworm or other high quality systems, what additional products and functionality can we provide?

27. Probabilistic noise estimates

28. Realtime array processing using regional network data Kuril Islands 3/7/02 depth: 443 mb: 5.2 62 63 64 65 Distance [degrees] 0 50 100 150 Time [seconds] California short-period network data

29. Improve STN • Determine arrival slowness •Increase pick accuracy •Improve phase IDs • Lower detection threshold •Improve locations Slowness [sec/deg] P beam Amplitude PcP beam Amplitude

30. In closing Earthworm’s seismic network functionality is continually improving. Additionally, use by other disciplines is rapidly expanding. Working within the earthworm paradigm provides the opportunity for development of new techniques that are easily transferred into operational products.

31. Beyond network seismology • Volcano monitoring • Lahar warning • Tsunami warning • Geomagnetic storm monitoring • Temporary arrays • Aftershock monitoring • Visitor displays

32. Towards realtime array processing using regional networks • Currently testing on global events magnitude 5.5 and greater • Data automatically obtained from Earthworm waveservers • Currently about 400 stations • Potentially thousands • Currently California regional networks and USNSN • Potentially networks blanketing the globe

33. Quick review

34. Acknowledgements Carl Johnson Alex Bittenbinder Barbara Bogaert Lucky Vidmar Harley Benz The earthworm development team and community