Proposal to site a seismic station on Diego Garcia Peter Davis Project IDA Scripps Institution of Oceanography University of California, San Diego.

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Presentation transcript:

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