Tim%20Ahern,%20Program%20Manager%20IRIS%20DMS

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A Short Introduction to the IRIS Data
Management CenterData Holdings, Data
Organization, and Data Access

• By
• Tim Ahern, Program Manager IRIS DMS

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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
• Americas need better representation

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The IRIS Data Management System
Network Ops Data QA
Data QA
Data QA
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Data Sources
IRIS
EarthScope
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More than 14,264 seismic stations from 267
networks and 469 temporary deployments have data
available through the IRIS DMC
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1,495 Stations in Central and S. America
291 Permanent, 625 PASSCAL, 170 SEIS-UK, 75
OBSIP 60 stations have real time telemetry
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1,997 stations telemetered in real timefrom 91
different networks
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60 Stations come in real time to the IRIS
DMC (not including TA, IM, etc)
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Types of Sensor Data IRIS manages

• Seismological
• Broadband Seismometers
• Strong Motion
• Buildings
• Structures
• Free Field
• Geophones
• Hydrophones

• Geophysical
• Magnetotelluric
• Magnetometer
• Electric Field
• Strainmeter
• dilatational
• tensor
• Tidal Pendulum
• Gravimeter
• conventional
• superconducting
• Tiltmeter
• Creep Meters

• Meteorological
• Wind Speed
• Wind Direction
• Temperature
• Humidity
• Rain Gauge
• Solar Radiaton
• Insolation/Pyranometer
• Microbarograph
• Relative/Absolute
• Infrasound
• microphones

• Water Column
• Water Current
• Depth
• Temperature
• Water Level

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IRIS Archive at 120 terabytes and growing at 20
terabytes per year
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Data Request Tools at the IRIS DMC
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Request Methods
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Networking Data Centers by Email

• Routes user requests between data centers
• Wraps normal Data Center operations within an
  application layer
• Coordinates delivery of information back to a
  user
• Peer based system
• Any NetDC node can act as a hub data center
• Or FDSN.ORG can be used

MedNet Italy
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Data Handling Interface (DHI)Access to
Distributed Data Centers
DHI Clients VASE SOD jWEED etc.
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DHI Enabled Centers
Existing
Planned
Planned (Events)
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DHI Enabled Centers- European
Existing
Planned
Planned (Events)
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Real Time Data Flow from DMC
DHI
SeedLink
Antelope
Earthworm
SeisGram 2K
VASE
SOD
EMM
jWeed
Seiscomp3
DHI2 mseed
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The IRIS Data Management Center

• Most of the 120 terabytes are in miniSEED format
• Metadata has been provided in dataless SEED
  format
• The huge holdings are consistent and complete due
  to adherence to FDSN standards
• Data from
• 267 permanent seismic networks
• 469 temporary deployments
• 14,264 stations
• 1,997 stations in 91 networks in real time as of
  2010

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Regional Exchange of Earthquake Data (REED)

• Focus on solving data communication issues
• Station to data center
• Cellular modems
• Radio modems
• Data center to Internet
• Fiber installation
• Data tariffs
• Past efforts
• Central Asia
• SW Pacific Tsunami Task Group
• Can the REED effort help your networks

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A Global Resource

• The IRIS DMS is available to all seismologists at
  the same priority level
• All data are open
• There is no charge for any of IRIS services
• Only one piece of software has limited
  distribution
• Antelope only available to Full IRIS Members
• SAC available to almost all seismologists

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Thanks for your attention