A Short Introduction to the IRIS Data Management

A “Short” Introduction to the IRIS Data Management Center Data Holdings, Data Organization, and Data Access By Tim Ahern, Program Manager IRIS DMS

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

The IRIS Data Management System Network Ops Data QA ASL DCC KZNet Almaty IDA DCC DMC Uof. W Data QA KNET Bishkek

Data Sources Earth. Scope IRIS GSN USArray PBO DMC SAFOD PASSCAL US Regional Networks FDSN Non-FDSN Networks

More than 14, 264 seismic stations from 267 networks and 469 temporary deployments have data available through the IRIS DMC

1, 495 Stations in Central and S. America 291 Permanent, 625 PASSCAL, 170 SEIS-UK, 75 OBSIP 60 stations have real time telemetry

1, 997 stations telemetered in real time from 91 different networks

60 Stations come in real time to the IRIS DMC (not including TA, IM, etc)

Types of Sensor Data IRIS manages • Seismological • • l Broadband Seismometers Strong Motion • • • Geophysical n l Buildings Structures Free Field l n • • • Wind Speed Wind Direction Temperature Humidity Rain Gauge Solar Radiaton • • Microbarograph • • Insolation/Pyranometer Relative/Absolute Infrasound • microphones l n n l dilatational tensor Tidal Pendulum Gravimeter l Meteorological Magnetometer Electric Field Strainmeter l Geophones Hydrophones n • Magnetotelluric conventional superconducting Tiltmeter Creep Meters Water Column n n Water Current Depth Temperature Water Level

IRIS Archive at 120 terabytes and growing at 20 terabytes per year

Data Request Tools at the IRIS DMC

Request Methods

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 Net. DC node can act as a hub data center Or FDSN. ORG can be used Net. DC Request SCEDC USA ORFEUS Netherlands NCEDC USA CNSN Canada FDSN. ORG IRIS DMC USA PACIFIC 21 Japan GEOSCOPE France Med. Net Italy

Data Handling Interface (DHI) Access to Distributed Data Centers DHI Data Center Network IDL Waveforms Events IDL Events DHI Data Center Network Waveforms Events DHI Clients VASE SOD j. WEED etc. DHI Data Center Network Waveforms Events

DHI Enabled Centers Existing Planned (Events)

DHI Enabled Centers- European Existing Planned (Events)

Real Time Data Flow from DMC BUD Buffer of Uniform Data Seed. Link Antelope Earthworm Seis. Gram 2 K Seiscomp 3 DHI VASE SOD j. Weed EMM DHI 2 mseed

The IRIS Data Management Center • Most of the 120 terabytes are in mini. SEED 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

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

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

Thanks for your attention