Abstract
Abstract A general survey of the sound-velocity structure of the South Pacific Ocean is presented. The type of variation of sound velocity with depth encountered depends on the area: antarctic, subantarctic, subtropical, and tropical velocity-depth profiles are defined. A major feature of the last three types of profile is the presence of a SOFAR velocity minimum between depths of 900 and 1,500 m. The actual depth of this minimum, together with other characteristics of the velocity structure, is affected by the South Pacific gyral and other anticyclonic eddies which are present in the Australasian area.
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