project ida (international deployment of accelerometers) project ida project ida: managing seismic...

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



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



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



Local data acquisition requirements:

Acquire time series from variety of instruments

Persistent data storage for arbitrary interval

Unattended operation Operator interface for

command/control



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



Shift, left click drag (easy!)

Data display for local operator:



UCSD’s experience: base all long haul communicationupon TCP/IP

Original circuit linking Obninsk to San Diego, 1990-1997



Telemetry links:

local area network (LAN) leased lines / VSATs local Internet service

provider (ISP) International dialup

Mbarara, Uganda



IRIS/IDA Telemetry Topology



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



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



Networks integrating IRIS/IDA Data



IDA Data Collection Center:

Comprehensive data analysis



Network Data Collection Center Functions:

Verify precision of timing Data/data flow problem detection Metadata management Maintenance activity reporting



Network Data Collection Center Hardware:

twin SunFire dual processor V240 data servers

SunFire V100 telemetry server 3.2 Tbyte RAID storage



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



What GSN brings to GEOSS:

substantial infrastructure for data collection and dissemination

software architecture adaptable to additional data protocols and formats



How GEOSS will help GSN data management:

Web services holds potential to revolutionize seismic data processing throughout the developing world

project ida (international deployment of accelerometers) project ida project ida: managing seismic...

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