Proposal to site a seismic station on Diego Garcia Peter Davis Project IDA Scripps Institution of Oceanography University of California, San Diego
Project IDA’s Goals: to develop high quality seismic data acquisition equipment to deploy systems globally at 2000 km spacing
Project IDA Funding NSF IRIS AFOSR Green Foundation USGS UCSD IDA
Why select Diego Garcia? geographic position
IRIS/IDA Seismic Network
IDA British sites: ESK - Eskdalemuir, Scotland; British Geological Survey ASCN - Ascension Island; British Broadcasting EFI - East Falkland Island; Falklands Landholdings HOPE - South Georgia Islands; British Antarctic Survey SHEL - Island of St Helena; Government of St Helena
IRIS Global Seismic Network
Why select Diego Garcia? geographic position seismic activity in region
How are the data used? seismological studies
How are the data used? seismological studies test ban treaty monitoring
How are the data used? Seismological studies test ban treaty monitoring tsunami warning
What equipment is needed? seismometers associated electronics telecommunications devices power (if necessary)
What site characteristics are necessary? removed from cultural noise prefer leeward side far from coast and breaking reefs access to power, communications
What infrastructure is required? seismographic vault
What infrastructure is required? seismographic vault power – 0.5 kW exclusive of air conditioning – 2.0 kW to climate control recording room
What infrastructure is required? seismographic vault power communications –TCP/IP via a serial circuit or LAN port –station produces 2 kbs continuously
What does installation involve? Personnel –one visit by IDA administrator lasting < 7 days –one visit by two IDA field engineers lasting days
What does installation involve? Personnel Shipping: –weight of equipment lbs –usually shipped by air freight
What ongoing maintenance is required? one hour/week for routine operations 20 hrs/year non-routine maintenance site visits by IDA engineers < 0.5/yr