ORFEUS coordination workshop, Nov 2012, Istanbul

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

Goal

• 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

ORFEUS coordination workshop, Nov 2012, Istanbul

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

Why is metadata important?

They are the Rosetta Stone - making it possible to decodeinformation well into the future.

Increases accessibility: “tell me where sites are in aregion”, or “which deployments were recording in a specific time frame”, or “what instruments operate in this region”, etc.

Carefully created metadata makes your waveform data valuable !

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 !

ORFEUS coordination workshop, Nov 2012, Istanbul

Data Preservation is Important

EOS PolicyStatement

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

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

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

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

Additional (non-SEED) information interactively inserted by network operator

ORFEUS coordination workshop, Nov 2012, Istanbul

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

Which metadata?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 …

Standard formats:- SEED (dataless)- FDSN Station XML (in review)

No standard formats !

Additional information for SM stations:

ORFEUS coordination workshop, Nov 2012, Istanbul

Which metadata?

Station metadata

Station inventory

Site characterization

Station characterization

Standard formats:- SEED (dataless)- FDSN Station XML (in review)

SC3 DB model

ORFEUS coordination workshop, Nov 2012, Istanbul

NERA NA3 initiatives

• 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

ORFEUS coordination workshop, Nov 2012, Istanbul

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

Viewing interface

Geoscope view interface

•Work in collaboration with Orfeus WP1 on broad band stations•Several national example to follow

ORFEUS coordination workshop, Nov 2012, Istanbul

Update interface

Itaca update interface

•Limited to network operators•Content responsibility to the operators

ORFEUS coordination workshop, Nov 2012, Istanbul

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

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

latest SC3 DB(inc. PGA, PGV …)

site info, fault description (?)…

RRSM DB

SEED metadata inserted

through EIDA/ODC

(dataless SEED)

non-SEED metadata inserted

via EMSC webinterface

NA3 databases: population

Station Book @ EMSC(based on RRSM DB)

XML

XML

EMSC EQnotification;+ events from thepast.

waveforms(arclink, offline, NERIES NA5 waveforms ?) …. requires dataless SEED !

×

● 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

wfpm

required:- FDSN network code- ISC station code

ORFEUS coordination workshop, Nov 2012, Istanbul

• 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.

•Functionally, we use “technical” metadata, in that it is used todescribe how the seismic system behaves, and limitedsoftware description (like compression, etc)

ORFEUS coordination workshop, Nov 2012, Istanbul

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 )