ByTim Ahern

Program Manager, IRIS Data Management SystemSecretary, FDSN

9-11 May 2007Kiel, Germany

The International Federation of Digital Seismographic Networks (FDSN): Building International

Collaborations

• The FDSN• The History of the FDSN• FDSN’s Role in International Coordination• Membership• Goals

• FDSN Network• Data Exchange at many Levels• Real Time Data Exchange• Distribution of Data

• Coordination at many scales using standards

Overview of the TalkOverview of the Talk

Raison d’etre

• In the early 1980s broadband seismology was in its infancy

• The scientific problem was global• Costs were high

• No one country could build a global network by itself

• The FDSN was formed to address the above situation• Bottoms Up• Lead by leaders in seismology

• This should sound familiar

• Coordination of the siting of seismic stations• 2000 km spacing in the FDSN Backbone

• Higher density Regional Networks

• Establishment of standards in instrumentation• 24 bit, 20 sample per second continuous

• Broadband • (World Wide Long Period and World Wide Short Period channels can be derived from a single

a stream)

• Establishment of Data Exchange Formats• S.E.E.D. Standard for the Exchange of Earthquake Data

• Providing Open Access to Data• The FDSN Network

• Promotes Near Real time data access

• Access to Quality Controlled Data with minimum delay

FDSN Goals

• Australia, • Canada, • China(SSB), • France, • Germany(GRF), • Italy,

• Japan, • Netherlands, • Soviet Union, • United Kingdom,

• United States

• (IRIS/USGS)

Originally 12 FDSN Members1986- 1988

• Australia• Austria• Brazil• Bulgaria• Canada • Chile• China (CSB & CAS)

• Columbia (Ingeominas & Osso)

• Costa Rica• Croatia • Czech Republic• Denmark• Ecuador• Egypt• European Union (ORFEUS)• Finland (Helsinki & Sodankyla)

• France (Geoscope & ReNaSS) • Georgia • Germany (GEOFON & GRSN)

• Greece (NOA, Thessaloniki)

• Hungary• Iceland• Indonesia• Iran• Israel• Italy (ING-V & OGS)

• Jamaica• Japan (ERI & NEID)

• Kazakhstan

• Macedonia• Malaysia• Mexico• Netherlands• New Zealand• Nicaragua• Norway• Poland• Portugal (CGUL & IST) • Romania• Russia• Slovakia• Slovenia• South Africa• Spain• Sweden• Switzerland• Taiwan• Tajikistan• Thailand• United Arab Emirates• United Kingdom• USA (IRIS, NCSN, PRSN, SCSN & USGS)

• Uzbekistan

FDSN Membership in 2007 66 institutions in 53 countries

Yellow indicates countries that have contributed to the FDSN ArchiveWhite indicates countries pending FDSN membership approval

FDSN Network - 300 stations199 at FDSN Archive (IRIS DMC) with 106 in real time

26 contributing networks

IRIS

Coordination at Different Scales

Weather

WMOWIS

FDSN NetworkGlobal

AsianRegionalAmericas

EuropeanRegional

Africa

Canada US

BrazilChile

Germany Italy

Spain France

Japan

ChinaTaiwan

S. Africa

NigerEgypt

Asian/Regional

Switzerland

Germany

Austria

Italy

France

1522 Stations telemetered in real time from 54 different networks(~6350 channels)

Real time data reception:

NEICAbout 700 stations on a normal day

925 stations & 4237 channelsreceived in the last 60 days

BATS3days after

Real time

Archive

BUDBuffer of Uniform Data

SEEDLink(10)

LISS(4)

AntelopeORB

(27)

H2ICIU

CU

MB

LBUSUW

UO

XX SCER

UU

AR

PR

PE

ET

CC

WY

NM

RE

IW

IEAT

AVKY

PE

NE

EarthwormWaveserver

(24)

CI

II

KN

LDNN

AKAZ

KZ

IM

GTAU

EQ

MY

BK

FA

TW

TA

ER

NP

LI

CZ

ATPN

CD-1

PSMY

MS

SN

PBO

CHG

MNGE

PB

CHNL

JP

NZ

PM

UK

Real Time Data Management Effective Integration into the Existing IRIS Real Time System from 65 Networks

BUD

SeedLink DHI LISS autoDRM

Real time data distribution

• NetDC - email based

• Data Handling Interface - API

• Web Services•WSDL/SOAP/XML•REST•OGC Web Mapping Services

Distributed Request Servicing

Linking Global Data Centers

Shipments by Yearfrom FDSN Archive @ IRIS

280,000 customized shipments 66,000 on-line shipments

16.0 terabytes of observational data (3.9 megabits/second)

1.03 billion time series (31 per second)

Shipments from the IRIS DMC

• Bottoms up is usually good in drinking and in building organizations

• Focus on a few key and active players that can really make things happen

• Data Sharing in Real Time and without restrictions is optimal• But develop methods to provide credit

• Interoperabilty with other Domains is increasingly important•Web services and web mapping services

Some Thoughts

Thank you for your attention

• 59 terabytes• Data from

• GSN• FDSN• JSP• US Regional Nets• PASSCAL

• More PASSCAL data than GSN data

Current Archive at IRIS

60 terabytes from 93 permanent networks

Growing at 11-14 terabytes per year

• Mass Storage System• StorageTek Powderhorn

• 1.2 petabyte capacity

• Mass Storage System• StorageTek Powderhorn

• 1.2 petabyte capacity

Mass Storage SystemIsilon IQ6000

90 terabyte capacity

Storage Capacity

Network

Waveforms

Events

DHI Data Center

DHI ClientsVASEjWEEDSOD

Network

Waveforms

Events

DHI Data Center

Network

Waveforms

Events

DHI Data Center

Network

Waveforms

Events

DHI Data Center

IDL

IDL

IDL

Access to Distributed Data Centers

IRISNCEDCSCEDCSCEPP

ORFEUS*MemphisGeofone-----------Canada

ISCGeoscopeORFEUS

Asia---------MedNet