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Found 4 result(s)
Jason is a remote-controlled deep-diving vessel that gives shipboard scientists immediate, real-time access to the sea floor. Instead of making short, expensive dives in a submarine, scientists can stay on deck and guide Jason as deep as 6,500 meters (4 miles) to explore for days on end. Jason is a type of remotely operated vehicle (ROV), a free-swimming vessel connected by a long fiberoptic tether to its research ship. The 10-km (6 mile) tether delivers power and instructions to Jason and fetches data from it.
The WHOI Ship DataGrabber system provides the oceanographic community on-line access to underway ship data collected on the R/V Atlantis, Knorr, Oceanus, and Tioga (TBD). All the shipboard data is co-registered with the ship's GPS time and navigation systems.
The Argo observational network consists of a fleet of 3000+ profiling autonomous floats deployed by about a dozen teams worldwide. WHOI has built about 10% of the global fleet. The mission lifetime of each float is about 4 years. During a typical mission, each float reports a profile of the upper ocean every 10 days. The sensors onboard record fundamental physical properties of the ocean: temperature and conductivity (a measure of salinity) as a function of pressure. The depth range of the observed profile depends on the local stratification and the float's mechanical ability to adjust it's buoyancy. The majority of Argo floats report profiles between 1-2 km depth. At each surfacing, measurements of temperature and salinity are relayed back to shore via satellite. Telemetry is usually received every 10 days, but floats at high-latitudes which are iced-over accumulate their data and transmit the entire record the next time satellite contact is established. With current battery technology, the best performing floats last 6+ years and record over 200 profiles.
The Alvin Frame-Grabber system provides the NDSF community on-line access to Alvin's video imagery co-registered with vehicle navigation and attitude data for shipboard analysis, planning deep submergence research cruises, and synoptic review of data post-cruise. The system is built upon the methodology and technology developed for the JasonII Virtual Control Van and a prototype system that was deployed on 13 Alvin dives in the East Pacific Rise and the Galapagos (AT7-12, AT7-13). The deployed prototype system was extremely valuable in facilitating real-time dive planning, review, and shipboard analysis.