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Tim Ahern The IRIS GSN and PASSCAL “Networks”
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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
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FDSN Network 201 stations
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388 Permanent, 357 PASSCAL, 259 SEIS-UK, 84 SEISMOB-FR 37 stations have real time telemetry 1,088 Stations in Africa & Middle East
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Real Time with Metadata 37 Real Time Stations in Africa & Middle East Contributing to IRIS/FDSN
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The IRIS Global Seismographic Network 156 Broadband Stations
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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) The composition of the IRIS GSN
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The Bandwidth of State-of-the-Art Instrumentation
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Real Time Data Transmission nearly realized
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Geophysical Observatories
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Working Closely with the CTBTO/IMS
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Program for Array Seismic Studies of the Continental Lithosphere 5163 PASSCAL Stations > 800 Experiments
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PASSCALPolarFA Datalogger 3-channel87544445 Datalogger 1-channel9831700 Broadband Sensor (>=120s)46944327 Intermediate Period Sensor1426 Short-period sensor170100 High-frequency geophone530100 Accelerometer20 Multichannel System14 13 PASSCAL Equipment Inventory 6,775 channels of data acquisition
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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)
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Experiment Support 15
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Training, Docs & Web 16 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
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Field 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 17 Himalayan Seismotectonics, Nepal
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Data Archiving 18
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