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

ByTim Ahern, Program Manager IRIS DMS

A “Short” Introduction to the IRIS Data Management Center

Data Holdings, Data Organization, and Data Access

FDSN Archive for Continuous Data at the IRIS DMC

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

DMC

UofW

ASL DCC

IDA DCC

KZNetAlmaty

Data QANetwork Ops

Data QA

KNETBishkek

Data QA

The IRIS Data Management System

DMC

GSN

PASSCAL

US Regional Networks

Non-FDSNNetworks

FDSN

USArray

PBO

SAFOD

EarthScope IRIS

Data Sources

More than 12,007 seismic stations from 248 networks/deployments have data available through the IRIS DMC

388 Permanent, 357 PASSCAL, 259 SEIS-UK, 84 SEISMOB-FR37 stations have real time telemetry

1,088 Stations in Africa & Middle East

1,920 Stations telemetered in real timefrom 73 different networks

Real Time with Metadata

37 Real Time Stations in Africa & Middle East Contributing to IRIS/FDSN

• Seismological• Broadband Seismometers• Strong Motion

• Buildings• Structures• Free Field

• Geophones• Hydrophones

• Meteorological• Wind Speed• Wind Direction• Temperature• Humidity• Rain Gauge• Solar Radiaton

• Insolation/Pyranometer

• Microbarograph• Relative/Absolute

• Infrasound• microphones

Geophysical Magnetotelluric

Magnetometer Electric Field

Strainmeter dilatational tensor

Tidal Pendulum Gravimeter

conventional superconducting

Tiltmeter Creep Meters

Geophysical Magnetotelluric

Magnetometer Electric Field

Strainmeter dilatational tensor

Tidal Pendulum Gravimeter

conventional superconducting

Tiltmeter Creep Meters

Water Column Water Current Depth Temperature Water Level

Water Column Water Current Depth Temperature Water Level

Types of Sensor Data IRIS manages

IRIS Archive at 100 terabytes and growing at 24 terabytes per year

Data Request Tools at the IRIS DMC

Request Methods

• 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

IRIS DMCUSA

ORFEUSNetherlands

CNSNCanada

PACIFIC 21Japan

MedNetItaly

GEOSCOPEFrance

NCEDCUSA

NetDCRequest

SCEDCUSA

FDSN.ORGFDSN.ORG

Networking Data Centers by Email

Network

Waveforms

Events

DHI Data Center

DHI ClientsVASESOD

jWEEDetc.

Network

Waveforms

Events

DHI Data Center

Network

Waveforms

Events

DHI Data Center

Network

Waveforms

Events

DHI Data Center

IDL

IDL

IDL

Data Handling Interface (DHI)Access to Distributed Data Centers

Existing

Planned

Planned (Events)

DHI Enabled Centers

Existing

Planned

Planned (Events)

DHI Enabled Centers- European

BUDBuffer of Uniform Data

DHISeedLink

Antelope EarthwormSeisGram

2KVASE SOD EMMjWeed

Seiscomp3 DHI2mseed

Real Time Data Flow from DMC

• Most of the 100 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

• 102 different seismic networks• 12,007 stations• 1,920 stations in 73 networks in real time as of 2009

The IRIS Data Management Center

• 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

A Global Resource

Thanks for your attention