ESTIMATION OF A GEOID SECTION ACROSS THE KUROSHIO

An estimate of the geoid across the Kuroshio Extension at its separati on point from Japan is calculated through an analysis of coincident se a surface measurements from inverted echo sounders (IESs) and Topex/Po seidon (T/P). The IESs were positioned along a T/P descending ground t rack in the vicinity of 35 degrees N, 143 degrees E. This geoid sectio n can be used in conjunction with altimeter data to estimate total sea surface height. Thus, Kuroshio position, surface geostrophic velocity , and transport along the section can be continuously monitored.