A short introduction to the IRIS Data Management

A short introduction to the IRIS Data Management System Data Holdings, Data Organization, and Data Access By Tim Ahern, Director of Data Services, IRIS

FDSN Archive for Continuous Data at the IRIS DMC • FDSN Backbone Network • 200 stations currently • Plans to increase in size to 300 • Focus on real time data sharing

The IRIS Data Management System Network Ops Data QA Data Curation & Distribution Data QA ASL DCC IDA DCC DMC KZNet Almaty Uof. W

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

More than 16, 152 seismic stations from >250 networks and 500 temporary deployments have data available through the IRIS DMC

2, 268 stations telemetered in real time from 98 different networks

2, 361 Stations in SE Asia

201 SE Asian Stations come in real time to the IRIS DMC

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

IRIS Archive at 152 terabytes and growing at 27 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

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 152 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 • • >250 permanent seismic networks ~500 temporary deployments 16, 152 stations 2, 249 stations in real time as of 2011

Three International Activities Supported by IRIS DMS • Metadata workshops • • Annual cycle moving from SE Asia, Africa Middle East, Latin America • Italy, Brazil, Malaysia, Egypt, Brazil, Thailand • Regional Exchange of Earthquake Data (REED) • Focus on solving data communication issues • Station to data center • Data center to Internet • Past and current efforts • Central Asia • SW Pacific Tsunami Task Group • Africa • Support for Seis. Comp-3 • Configuration GUI, installation simplification, Station. XML

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