Understanding the causes of oceanographic changes from glacial to interglacial periods has been one of fundamental problems of global climate dynamics. The eastern equatorial Pacific located on the upwelling environment is an important key area between the both hemisphere climates. To understand the paleoceanographic changes in this area during glacial-interglacial cycles, three piston cores were recovered from the center of topographic flat basin along the longitudinal line of 95° W across the equator during the cruise KH03-1 of R/V Hakuho Maru. These cores named HY04 (4º N), HY06 (0º), HY08 (6º S) are composed mainly of calcareous pelagic mud with alternation of light and dark color. To reconstruct the age models, oxygen isotope (?18O) and AMS-14C measurements were conducted on planktonic foraminifera in each core. In this study, we present the core correlations based on the precise age models.
See more of Poster Session I
See more of The 10th International Conference on Accelerator Mass Spectrometry (September 5-10, 2005)