PELAGIC TIDAL MEASUREMENTS - A SUGGESTED PROCEDURE FOR ANALYSIS

There has long existed a need for pelagic tide and current measurements, but the technology for making such observations has been developed only recently. In 1965, an international working group on deep‐sea tides was formed (now sponsored by IAPSO, SCOR, and Unesco) that would concern itself with the exchange of information on instrumentation and analysis and with the formulation of a worldwide data acquisition program. Some pelagic tide observations have now been obtained by pressure sensors on the sea bottom connected by cable to the surface [Eyri`es, 1968] or to shore [Nowroozi et al., 1968] and by self‐contained bottom instruments that record internally and are recalled to the surface by an acoustic signal [Snodgrass, 1968] and time‐release device [Filloux, 1968, and Hicks et al., 1965]. The equipment described by Snodgrass and by Nowroozi include current meters measuring speed and direction. The over‐all objectives of the deep‐sea tide program are described by Munk and Zetler [1967] and Cartwright [1969]. ©1969. American Geophysical Union. All Rights Reserved.