The International Federation of Digital Seismographic Networks FDSN

The International Federation of Digital Seismographic Networks (FDSN): Building International Collaborations By Tim Ahern Program Manager, IRIS Data Management System Secretary, FDSN 9 -11 May 2007 Kiel, Germany

Overview of the Talk • The FDSN • • The History of the 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

Raison d’etre • In the early 1980 s 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

FDSN Goals • 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 • • Establishment of Data Exchange Formats • • (World Wide Long Period and World Wide Short Period channels can be derived from a single a stream) 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

Originally 12 FDSN Members 1986 - 1988 • • • Australia, Canada, China(SSB), France, Germany(GRF), Italy, • • • Japan, Netherlands, Soviet Union, United Kingdom, United States • (IRIS/USGS)

FDSN Membership in 2007 66 institutions in 53 countries • • • • • • • 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 & Re. Na. SS) Georgia Germany (GEOFON & GRSN) Greece (NOA, Thessaloniki) Hungary Iceland Indonesia Iran Israel Italy (ING-V & OGS) Yellow indicates countries that have contributed to the FDSN Archive White indicates countries pending FDSN membership approval • • 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 Network - 300 stations 199 at FDSN Archive (IRIS DMC) with 106 in real time 26 contributing networks

Coordination at Different Scales FDSN Network Global Weather Germany Chile Brazil Americas Canada Italy European Germany Regional Italy Spain France Switzerland WMO WIS Japan Asian Regional Taiwan US Austria France Asian/Regional IRIS Egypt Niger Africa S. Africa China

Real time data reception: 1522 Stations telemetered in real time from 54 different networks (~6350 channels) NEIC About 700 stations on a normal day 925 stations & 4237 channels received in the last 60 days

Real Time Data Management Effective Integration into the Existing IRIS Real Time System from 65 Networks SN PS MY MS LI TA BK PN ER LD AK Antelope ORB CD-1 AU TW IC EQ FA IM GT AZ II NP NN AT IU H 2 LISS CI (4) CU (27) KZ KN CZ MY BUD Buffer of Uniform Data ER PE ET NE IW KY WY RE CC AT PE XX SC NM AR UU IE AV Archive Earthworm Waveserver (24) UW UO MB US PR LB G JP UK CH (10) CH PM NL MN GE PBO NZ PB SEEDLink BATS 3 days after Real time

Real time data distribution BUD Seed. Link DHI LISS auto. DRM

Distributed Request Servicing • Net. DC - email based • Data Handling Interface - API • Web Services • WSDL/SOAP/XML • REST • OGC Web Mapping Services

Linking Global Data Centers

Shipments by Year from FDSN Archive @ IRIS

Shipments from the IRIS DMC 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)

Some Thoughts • 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

Thank you for your attention

Current Archive at IRIS 60 terabytes from 93 permanent networks • 59 terabytes • Data from • • • GSN FDSN JSP US Regional Nets PASSCAL • More PASSCAL data than GSN data Growing at 11 -14 terabytes per year

Storage Capacity Mass Storage System • Mass Storage System Isilon IQ 6000 • Storage. Tek Powderhorn 90 terabyte capacity • 1. 2 petabyte capacity

Access to Distributed Data Centers DHI Data Center Network IRIS NCEDC SCEPP ORFEUS* Memphis Geofone -----Canada ISC Geoscope ORFEUS Asia ----Med. Net IDL Network IDL Waveforms Events IDL Events DHI Data Center Network Waveforms Events DHI Clients VASE j. WEED SOD DHI Data Center Network Waveforms Events