Project IDA (International Deployment of Accelerometers) Project IDA Project IDA: Managing Seismic Data on a Global Scale GEOSS Seismic Workshop August 23-24, 2005 Peter Davis Scripps Institution of Oceanography University of California, San Diego

Project IDA (International Deployment of Accelerometers) Project IDA GSN NETWORK OPERATORS - USGS Albuquerque Seismological Laboratory - IRIS/IDA Group at IGPP, Scripps Institution of Oceanography University of California, San Diego - University Networks and Affiliates

Project IDA (International Deployment of Accelerometers) Project IDA GSN Station  A host organization - university, government lab, or commercial organization. Provides land and in- country operational support.  $250k - $500k facilities  On-going O&M support South Georgia Island

Project IDA (International Deployment of Accelerometers) Project IDA Local data acquisition requirements:  Acquire time series from variety of instruments  Persistent data storage for arbitrary interval  Unattended operation  Operator interface for command/control

Project IDA (International Deployment of Accelerometers) Project IDA MK7 DAS IDA Station Processor NRTS async serial IDA NRTS Gateway IMS GCI Gateway site specific TCP/IP to San Diego to IMS TCP/IP MK8 DAS TCP/IP

Project IDA (International Deployment of Accelerometers) Project IDA Shift, left click drag (easy!) Data display for local operator:

Project IDA (International Deployment of Accelerometers) Project IDA UCSD’s experience: base all long haul communication upon TCP/IP Original circuit linking Obninsk to San Diego,

Project IDA (International Deployment of Accelerometers) Project IDA Telemetry links:  local area network (LAN)  leased lines / VSATs  local Internet service provider (ISP)  International dialup Mbarara, Uganda

Project IDA (International Deployment of Accelerometers) Project IDA IRIS/IDA Telemetry Topology

Project IDA (International Deployment of Accelerometers) Project IDA IDA Near Real Time System (NRTS):  developed by UCSD to support GSN communications  handles continuous or segmented time series  manages multiple, simultaneous data connections to distinct locations  provides format conversion tools (miniSEED, SAC, CSS 3.0, CM6)  clients based on toolkit (Antelope, Earthworm, VDL)  autoDRM  supports draft GSN telemetry formats and protocols

Project IDA (International Deployment of Accelerometers) Project IDA NRTS data servers:  Each station may serve data to many recipients  With limited bandwidth, usually serves only one  Hubs positioned for broadband access  Hubs concentrate data from multiple stations

Project IDA (International Deployment of Accelerometers) Project IDA Networks integrating IRIS/IDA Data

Project IDA (International Deployment of Accelerometers) Project IDA IDA Data Collection Center: Comprehensive data analysis

Project IDA (International Deployment of Accelerometers) Project IDA Network Data Collection Center Functions:  Verify precision of timing  Data/data flow problem detection  Metadata management  Maintenance activity reporting

Project IDA (International Deployment of Accelerometers) Project IDA Network Data Collection Center Hardware:  twin SunFire dual processor V240 data servers  SunFire V100 telemetry server  3.2 Tbyte RAID storage

Project IDA (International Deployment of Accelerometers) Project IDA Data Delivery to IRIS DMC:  immediate forwarding of telemetered data  quality control of telemetered data within 2-3 days  reconciliation with station media within 60 days

Project IDA (International Deployment of Accelerometers) Project IDA What GSN brings to GEOSS:  substantial infrastructure for data collection and dissemination  software architecture adaptable to additional data protocols and formats

Project IDA (International Deployment of Accelerometers) Project IDA How GEOSS will help GSN data management:  Web services holds potential to revolutionize seismic data processing throughout the developing world