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Project IDA (International Deployment of Accelerometers)
Project IDAProject IDA
Project IDA:Managing Seismic Data
on a Global Scale
GEOSS Seismic WorkshopAugust 23-24, 2005
Peter DavisScripps Institution of OceanographyUniversity of California, San Diego
Project IDA (International Deployment of Accelerometers)
Project IDAProject 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 IDAProject 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 IDAProject 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 IDAProject IDA
MK7 DAS
IDA Station Processor
NRTSasync serial
IDA NRTSGateway IMS GCI
Gateway
site specific TCP/IP
to San Diego
to IMS
TC
P/IP
MK8DAS
TCP/IP
Project IDA (International Deployment of Accelerometers)
Project IDAProject IDA
Shift, left click drag (easy!)
Data display for local operator:
Project IDA (International Deployment of Accelerometers)
Project IDAProject IDA
UCSD’s experience: base all long haul communicationupon TCP/IP
Original circuit linking Obninsk to San Diego, 1990-1997
Project IDA (International Deployment of Accelerometers)
Project IDAProject 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 IDAProject IDA
IRIS/IDA Telemetry Topology
Project IDA (International Deployment of Accelerometers)
Project IDAProject 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 IDAProject 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 IDAProject IDA
Networks integrating IRIS/IDA Data
Project IDA (International Deployment of Accelerometers)
Project IDAProject IDA
IDA Data Collection Center:
Comprehensive data analysis
Project IDA (International Deployment of Accelerometers)
Project IDAProject 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 IDAProject 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 IDAProject 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 IDAProject 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 IDAProject IDA
How GEOSS will help GSN data management:
Web services holds potential to revolutionize seismic data processing throughout the developing world