Accelerometric Station Book

1. Accelerometric Station Book Stephanie Godey (EMSC) Reinoud Sleeman (KNMI/ORFEUS) NERA NA3 team: EMSC, KNMI, ETH, INGV, CNRS, METU Set up a unique and reliable international registry of strong motion stations ORFEUS coordination workshop, Nov 2012, Istanbul

2. Create an accelerometric station repository Long term archive (international standards) Up-to-date, accessible station information International reference registry Increase use and processing of station recordings by the scientists and engineers community Ensure the sustainability of the data Goal ORFEUS coordination workshop, Nov 2012, Istanbul

3. Accelerometric Station Inventory – NA3 approach • Up-to-date station information crucial and common both for RRSM and ESM • Create a living, on-line and up-to-date inventory of all strong motion instruments in the greater European region • Development, initial population, hosting and technical maintenance (of the registry database) will be done by EMSC, ODC, NERA NA3 partners and the various network operators responsible for ensuring up-to-date station information. • Inventory will be accessible using a web browser and can (partly) be updated by network operators ORFEUS coordination workshop, Nov 2012, Istanbul

4. Why is metadata important? They are the Rosetta Stone - making it possible to decode information well into the future. Increases accessibility: “tell me where sites are in a region”, or “which deployments were recording in a specific time frame”, or “what instruments operate in this region”, etc. Carefully created, they create both short and long-term benefits by capturing “tribal knowledge” when it’s still available, like equipment (serial numbers), sample rates, gains, documenting an accurate history of ground motion. Remember: people forget ! Carefully created metadata makes your waveform data valuable ! ORFEUS coordination workshop, Nov 2012, Istanbul

5. Data Preservation is Important EOS Policy Statement Earth and Space data are a world heritage. Properly documented and archived, they will help future scientists understand the system……..and taking proper care of such data is our responsibility and our obligation (for future generations) ……. ORFEUS coordination workshop, Nov 2012, Istanbul

6. Current global registries International registry of network codes Federation of Digital Seismograph Networks (FDSN) Unique network codes (max 2 characters; SEED) Broadband community www.fdsn.org International registry (IR) of station codes Maintained by ISC / NEIC Unique station codes (max 5 characters; SEED) www.isc.ac.uk ORFEUS coordination workshop, Nov 2012, Istanbul

7. Recent initiative: ORFEUS WG-1 • FDSN and IR do not include instrument type or response information • ORFEUS WG-1: Broad band metadata database (Josep Vila; GFU ) Initial population of database from dataless SEED (metadata) ORFEUS coordination workshop, Nov 2012, Istanbul

8. Recent initiative: ORFEUS WG-1 • FDSN and IR do not include instrument type or response information • ORFEUS WG-1: Broad band metadata database (Josep Vila; GFU ) • Some remarks: Initial population of database from dataless SEED (metadata) Currently populated with BB stations (potentially in Europe about 1500 EIDA stations) Network operator is responsible for correct, complete and up-to-date metadata information ( not experienced how easy this is to do) DB populated with dataless SEED; additional fields to be filled in by operator - could serve as prototype for NA3 stationbook Independent verification of metadata remains needed by (sophisticated) software FSDN proposal for StationXML (most likely to be accepted in 2 weeks) ORFEUS coordination workshop, Nov 2012, Istanbul

9. Additional (non-SEED) information interactively inserted by network operator ORFEUS coordination workshop, Nov 2012, Istanbul

10. Presently no international accelerometric instrument repository … but more than 3000 stations (est. 2008) stations during the NERIES project serving different needs and different communities (public, seismologists, engineers…) ORFEUS coordination workshop, Nov 2012, Istanbul

11. Characterizing accelerometric station requires: Usual information, similar to a seismic station Location Response (history) Sample rate : Site characterization Geophysical description of the site Geophysical site analysis type (borehole, noise array, H/V, etc) Output of the site analysis (dispersion curves, traveltime velocity, vs30) Station characterization Morphology Ownership Photos … Which metadata? Standard formats: - SEED (dataless) - FDSN Station XML (in review) Additional information for SM stations: No standard formats ! ORFEUS coordination workshop, Nov 2012, Istanbul

12. Which metadata? Standard formats: - SEED (dataless) - FDSN Station XML (in review) Station inventory SC3 DB model Station metadata Site characterization Station characterization ORFEUS coordination workshop, Nov 2012, Istanbul

13. Set up a unique and reliable international registry of accelerometric stations Merging earthquake monitoring metadata and earthquake engineering information Instrumental metadata via ‘authorized’ datacenters (EIDA) View and update interface for network operators (station and site characterization) Open user access NERA NA3 initiatives ORFEUS coordination workshop, Nov 2012, Istanbul

14. Behind the scene • Collaboration ODC+EMSC • Automatic update of EIDA real time accelerometric station • information through SeisComp3 database • Manual update via web interface for other information and non • real time stations ORFEUS coordination workshop, Nov 2012, Istanbul

15. Viewing interface • Work in collaboration with Orfeus WP1 on broad band stations • Several national example to follow Geoscope view interface ORFEUS coordination workshop, Nov 2012, Istanbul

16. Update interface • Limited to network operators • Content responsibility to the operators Itaca update interface ORFEUS coordination workshop, Nov 2012, Istanbul

17. Operators • What does it bring you? • Store your station information in a single repository • Enter international collaboration and data exchange • Maintain accurate information alive for the scientific community • Requirements • Register your network to FDSN • Preferably register your stations to the ISSR • Instrument response information ORFEUS coordination workshop, Nov 2012, Istanbul

18. Developments • 1,000 stations from NERA NA3 participants will be inserted in the database • Collaborations with USGS for common initiatives • Collaborations with working groups on site characterization (NERA JRA1) • Collaborations with other ongoing projects: Sigma • We need your feedback and your approval ! ORFEUS coordination workshop, Nov 2012, Istanbul

19. NA3 databases: population waveforms (arclink, offline, NERIES NA5 waveforms ?) …. requires dataless SEED ! RRSM DB wfpm EMSC EQ notification; + events from the past. SEED metadata inserted through EIDA/ODC (dataless SEED) non-SEED metadata inserted via EMSC webinterface latest SC3 DB (inc. PGA, PGV …) site info, fault description (?) … XML × XML Station Book @ EMSC (based on RRSM DB) required: - FDSN network code - ISC station code ● SB stations without SEED metadata will not be populated into the RRSM DB @ ODC ● Raw and processed event waveform data stored @ ODC; continuouus waveforms deleted after 6 months ORFEUS coordination workshop, Nov 2012, Istanbul

20. Functionally, we use “technical” metadata, in that it is used to • describe how the seismic system behaves, and limited • software description (like compression, etc) • metadata must be shared in standard format (dataless SEED, FDSN • StationXML) which makes metadata “portable” amongs • heterogeneous systems • Whenever anything changes at a site, new metadata should • be exchanged with archives and/or other networks using it. ORFEUS coordination workshop, Nov 2012, Istanbul

21. Recent initiative: ORFEUS WG-1 • FDSN and IR do not include instrument type or response information • ORFEUS WG-1: Broad band metadata database (Josep Vila; GFU ) ORFEUS coordination workshop, Nov 2012, Istanbul