Abstract
A survey of some deep-sea observatories that have either been deployed or have been developed is provided. The enabling technologies that facilitate the powering, comrrtartd and control and the transmission of data back to shore is discussed. To facilitate this discussion, examples of a number of observatories are categorized as “Wired to Shore”, “Wired to Surface” or “Wireless”. Among those observatories discussed are Japan’s Hatsushimu Real Time Long-term Deep Sea Floor Observatory, the Hawaii Undersea Geo-Observatory (HUGO), the Hawaii 2 Observatory (H2O), Ocean Net, the Geophysical and Oceanographic Station for Abyssal Research (GEOSTAR) and the NEPTUNE Project. Some relative advantages of each approach are discussed as regards cost, technical and logistical considerations.
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