Transcript geoss ida

Project IDA
Project IDA (International Deployment of Accelerometers)
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
Project IDA (International Deployment of Accelerometers)
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
Project IDA (International Deployment of Accelerometers)
GSN Station
South Georgia Island
 A host organization - university,
government lab, or commercial
organization. Provides land and incountry operational support.
 $250k - $500k facilities
 On-going O&M support
Project IDA
Project IDA (International Deployment of Accelerometers)
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
Project IDA (International Deployment of Accelerometers)
MK7
DAS
to San Diego
IDA NRTS
Gateway
TCP/IP
IDA Station
Processor
async serial
NRTS
TCP/IP
MK8
DAS
site specific TCP/IP
IMS GCI
Gateway
to IMS
Project IDA
Project IDA (International Deployment of Accelerometers)
Data display for local operator:
Shift, left click drag (easy!)
Project IDA
Project IDA (International Deployment of Accelerometers)
UCSD’s experience:
base all long haul
communication
upon TCP/IP
Original circuit linking Obninsk to
San Diego, 1990-1997
Project IDA
Project IDA (International Deployment of Accelerometers)
Telemetry links:
 local area network (LAN)
 leased lines / VSATs
 local Internet service
provider (ISP)
 International dialup
Mbarara, Uganda
Project IDA
Project IDA (International Deployment of Accelerometers)
IRIS/IDA Telemetry Topology
Project IDA
Project IDA (International Deployment of Accelerometers)
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
Project IDA (International Deployment of Accelerometers)
NRTS data servers:
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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
Project IDA (International Deployment of Accelerometers)
Networks integrating IRIS/IDA Data
Project IDA
Project IDA (International Deployment of Accelerometers)
IDA Data Collection Center:
Comprehensive data analysis
Project IDA
Project IDA (International Deployment of Accelerometers)
Network Data Collection
Center Functions:
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Verify precision of timing
Data/data flow problem detection
Metadata management
Maintenance activity reporting
Project IDA
Project IDA (International Deployment of Accelerometers)
Network Data Collection
Center Hardware:
 twin SunFire dual processor
V240 data servers
 SunFire V100 telemetry server
 3.2 Tbyte RAID storage
Project IDA
Project IDA (International Deployment of Accelerometers)
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
Project IDA (International Deployment of Accelerometers)
What GSN brings to
GEOSS:
 substantial infrastructure for data
collection and dissemination
 software architecture adaptable
to additional data protocols and
formats
Project IDA
Project IDA (International Deployment of Accelerometers)
How GEOSS will help
GSN data management:
 Web services holds potential to
revolutionize seismic data
processing throughout the
developing world