HR: 1330h
AN: U22A-0026    [PDF]
TI: Providing Networking to the DEOS Fleet of Moored Ocean Observatories: High-Seas ROADNet.
AU: * Orcutt, J
EM: jorcutt@ucsd.edu
AF: SIO, UCSD, 9500 Gilman Drive, La Jolla, CA 92093-0225 United States
AU: Berger, J
EM: jberger@ucsd.edu
AF: SIO, UCSD, 9500 Gilman Drive, La Jolla, CA 92093-0225 United States
AU: Vernon, F
EM: fvernon@ucsd.edu
AF: SIO, UCSD, 9500 Gilman Drive, La Jolla, CA 92093-0225 United States
AU: Hansen, T
EM: thansen@ucsd.edu
AF: SDSC, UCSD, 9500 Gilman Drive, La Jolla, CA 92093-0505 United States
AB: Recent advances in the technologies associated with computation, data telemetry and multidisciplinary sensors, have motivated the scientific community to develop a plan for long-term `ocean observatories' where sensors are deployed at the air-sea interface, within the water column, and on and beneath the seafloor. The establishment of a fleet of moored ocean buoy observatories will be an important element of the DEOS initiative, conceived as part of NSF's larger, more inclusive Ocean Observatories Initiative (OOI). These buoys will provide the infrastructure to connect the Internet to a network of ocean-bottom and ocean-column instruments. The most important requirements driving moored observatory design are the amount of power delivered to the seafloor and moored instruments and the telemetry rate that the buoy system must support between the instruments and the shore. Two designs have been developed, a wave-following discus and a spar buoy capable of delivering 500 W to the seafloor and telemetering at least 500 Mbytes of data per day to shore. The only cost-effective alternative for continuous moderate-bandwidth communication ($>$64 kbps) currently available is a C-Band or Ku-Band satellite system. A prototype C-Band system has been installed on the R/V Roger Revelle, the R/V Melville, and the R/V Thomas Thompson with a teleport hub at the San Diego supercomputer Center. This system provides full-period shipboard Internet connection as the ships operated over wide areas of the Pacific Ocean. The system has proved very effective in providing data, video, and voice communications for the ships' scientists and crew. The data connections to/from the ships are managed by the ROADNet (Real-time Observatories, Applications, and Data management Network) virtual object ring buffer (VORB) technology discussed in other papers in this session.
DE: 9805 Instruments useful in three or more fields
SC: U
MN: 2003 Fall Meeting