Renewal of Bottom Water in the Sangihe Basin, East Indies, and Bottom Temperatures of the Recorder Expedition

Abstract

A temperature measurement of bottom water in the closed Sangihe Basin in the year 1961 at 3585 m depth suggests a renewal of bottom water since 1930 because of a cooler modern temperature. If the 1930 water is assumed to have warmed from a temperature similar to the 1961 temperature and if the rate of warming is assumed to be the same as found in the Caribbean Sea by Worthington (1956), then the last renewal of bottom water in the basin occurred roughly 500 years ago. Bottom temperatures were also taken by the C.S. Recorder in the Coral and Solomon Seas and are listed.