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Tim Ahern
The FDSN and IRIS GSN and PASSCAL “Networks”
• FDSN Backbone Network• 200 stations currently• Plans to increase in size to 300• Southern Hemisphere is underrepresented
FDSN Archive for Continuous Data at the IRIS DMC
FDSN Network201 stations
2,361 Stations in SE Asia
201 SE Asian Stations come in real time to the IRIS DMC
The IRIS Global Seismographic Network156 Broadband Stations
• 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
The Bandwidth of State-of-the-Art Instrumentation
Real Time Data Transmission nearly realizedReal Time Data Transmission nearly realized
Geophysical ObservatoriesGeophysical Observatories
Working Closely with the CTBTO/IMSWorking Closely with the CTBTO/IMS
Upgrading the GSN Data LoggersUpgrading the GSN Data Loggers
Program for Array Seismic Studies of the Continental Lithosphere
5,631 PASSCAL Stations in 672 Experiments
Program for Array Seismic Studies of the Continental Lithosphere
5,631 PASSCAL Stations in 672 Experiments
Program for Array Seismic Studies of the Continental Lithosphere
1,071 PASSCAL Stations in SE Asia
Program for Array Seismic Studies of the Continental Lithosphere
1,071 PASSCAL Stations in SE Asia
PASSCAL Polar
FA
Datalogger 3-channel 875 44 445
Datalogger 1-channel 983 1700
Broadband Sensor (>=120s) 469 44 327
Intermediate Period Sensor 142 6
Short-period sensor 170 100
High-frequency geophone 530 100
Accelerometer 20 20
Multichannel System 1415
PASSCAL Equipment Inventory6,775 channels of data acquisition
Types of Equipment Supported by PASSCALTypes 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)
Experiment SupportExperiment Support
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Training, Docs & WebTraining, Docs & Web
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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
FieldField
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
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Himalayan Seismotectonics, Nepal
Data ArchivingData Archiving
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