Individual foraminiferal δ¹⁸O analyses (IFA) from Late Holocene core-tops sediments from Indian Ocean

Le résumé fourni par la source

This dataset contains measurements of individual foraminiferal δ¹⁸O (‰ VPDB) (IFA) from Late Holocene core-top sediments at three sites across the tropical Indian Ocean: MD96-2060 (40.46°E, 8.30°S, 2026m), Site NIOP 905 (51.95°E, 10.76°N, 1575m) and IODP Site U1467 (73.17°E, 4.5°N, 487.4 m). Measurements were performed on two planktonic species, Globigerinoides ruber, a surface dweller, and Neogloboquadrina dutertrei, a thermocline species. The file includes data on the number of individuals analysed, the core sample information, age of the core-top, species measured and the individual δ¹⁸O values. This dataset is suitable for quantifying the width and shape of foraminiferal δ¹⁸O distributions as a proxy for Late Holocene variability, to assess a comparison with forward modelling IFA using modern reanalysis products, and for inter-site comparison of surface versus subsurface temperature variance across the Indian Ocean. It also serves as a modern reference for IFA-based paleoclimate reconstructions in the Indian Ocean, particularly in the context of Indian Ocean Dipole and monsoon driven temperature variability at the surface and thermocline.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.