Abstract

We present a reconstruction of El Niño Southern Oscillation (ENSO) variability for the last millennium using stable oxygen and carbon isotope data obtained by analyzing samples from a marine sediment core (core MD98-2177) collected in the Indonesian Seas, at the edge the western Pacific warm pool. At this location the δ18O of calcite produced by thermocline-dwelling planktonic foraminifers reflect the temperature and salinity variability that accompanies both eastern as well as central Pacific types of ENSO. Changes in ENSO variability have been inferred from the spread and symmetry of distributions in oxygen isotope (δ18O) values within a sample population of individual Pulleniatina obliquiloculata. The individual isotopic values document monthly subsurface temperatures and salinities that accompanied the seasonal cycle, changes in the range of calcification depths, and interannual variability, including …

Date

January 1, 1970

Authors

D Khider, LD Stott, J Emile-Geay, R Thunell

Journal

AGU Fall Meeting Abstracts

Volume

2010

Pages

PP51B-05