Abstract

The thermocline of the Makassar Strait within the Indo-Pacific Warm Pool is strongly influenced by the El Niño-Southern Oscillation (ENSO) and, to a lesser extent, by seasonal wind reversals associated with the monsoon cycle. The thermocline temperature and salinity changes associated with this variability are accompanied by changes in the production and flux of planktonic foraminifera, including the thermocline-dwelling Pulleniatina obliquiloculata. Here we evaluate how a change in the intra-or interannual production and flux of this species affects the distribution of δ18O values within a population of specimens sampled from a marine sediment core from the northern Makassar Strait (MD98-2177). The δ18O of 50-100 individual P. obliquiloculata was measured from the 20th century, the Little Ice Age and the Medieval Climate Anomaly sections of core MD98-2177. The distributions of δ18O values at each time …

Date

January 1, 1970

Authors

Deborah Khider, Lowell D Stott, R Thunell

Journal

AGU Fall Meeting Abstracts

Volume

2009

Pages

PP13D-1434