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Tim Ahern

The IRIS GSN and PASSCAL “Networks”. Tim Ahern. FDSN Archive for Continuous Data at the IRIS DMC. FDSN Backbone Network 200 stations currently Plans to increase in size to 300 Africa and Middle East are underrepresented. FDSN Network 201 stations. 1,088 Stations in Africa & Middle East.

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Tim Ahern

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  1. The IRIS GSN and PASSCAL “Networks” Tim Ahern

  2. FDSN Archive for Continuous Data at the IRIS DMC • FDSN Backbone Network • 200 stations currently • Plans to increase in size to 300 • Africa and Middle East are underrepresented

  3. FDSN Network201 stations

  4. 1,088 Stations in Africa & Middle East 388 Permanent, 357 PASSCAL, 259 SEIS-UK, 84 SEISMOB-FR 37 stations have real time telemetry

  5. 37 Real Time Stations in Africa & Middle East Contributing to IRIS/FDSN Real Time with Metadata

  6. The IRIS Global Seismographic Network 156 Broadband Stations

  7. The composition of the IRIS GSN • GSN • 156 Broadband stations • 81 IRIS/USGS (IU) Stations • 41 IRIS/IDA (II) Stations • 10 IRIS/China (IC) Stations • 9 USGS Caribbean (CU) Stations • 9 AFTAC/IMS (IM) Stations • 6 Affiliate Stations (AU, BK, CI, GT, MS)

  8. The Bandwidth of State-of-the-Art Instrumentation

  9. Real Time Data Transmission nearly realized

  10. Geophysical Observatories

  11. Working Closely with the CTBTO/IMS

  12. Program for Array Seismic Studies of the Continental Lithosphere5163 PASSCAL Stations > 800 Experiments

  13. PASSCAL Equipment Inventory 6,775 channels of data acquisition

  14. Types of Equipment Supported by PASSCAL • Data Loggers • 468 - RT130 • 491 - Q330 • Broadband Sensors • 220 - Streckheisen STS-2 • 560 - Guralp CMG-3T • 42 - Nanometrics Trillium 240 • 2 - Nanometrics Trillium 120 • Intermediate Period Sensors • 90 Guralp 40T • 16 Nanometrics T-40 • Short period sensors • 100 Guralp 40T (1 sec) • 170 Sercel L22 (2hz)

  15. Experiment Support

  16. Training, Docs & Web • All PIC Experiments Required to Attend Training • 2-3 day intensive covering all aspects of deployment, data recovery, and archiving • Training continues in-field for all experiments that have PIC personnel field support • Documentation • Documentation frequently tailored to experiment. • Examples of field deployment and service sheets • http://www.passcal.nmt.edu • Access to PIC inventory • Instrument specifications and comparisons • Request forms and policies • Instrument schedules • Experiment profiles • Software links

  17. Field Himalayan Seismotectonics, Nepal • Huddle Test • Access equipment health • Test recording parameters • Training • Provide in-field training for all participants • Review best practices • Logistics • Controlled Source • Start to finish • Deploy and/or man field center during deployment • Produce field archive of raw data • Create gathers if time permits • Passive Source • Deploy at least during the initial phase for continued training and best practice

  18. Data Archiving

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