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Planktonic foraminifera Mg/Ca-based temperatures and planktonic foraminiferal cenus counts of core GeoB10065-7 (Lombok Basin, Indonesia)

Modern variability in upwelling off southern Indonesia is strongly controlled by the Australian-Indonesian monsoon and the El Niño-Southern Oscillation, but multi-decadal to centennial-scale variations are less clear. We present high-resolution records of upper water column temperature, thermal gradient and relative abundances of mixed layer- and thermocline-dwelling planktonic foraminiferal species off southern Indonesia for the past two millennia that we use as proxies for upwelling variability. We find that upwelling was generally strong during the Little Ice Age (LIA) and weak during the Medieval Warm Period (MWP) and the Roman Warm Period (RWP). Upwelling is significantly anti-correlated to East Asian summer monsoonal rainfall and the zonal equatorial Pacific temperature gradient. We suggest that changes in the background state of the tropical Pacific may have substantially contributed to the centennial-scale upwelling trends observed in our records. Our results implicate the prevalence of an El Niño-like mean state during the LIA and a La Niña-like mean state during the MWP and the RWP.

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Cite this as

Steinke, Stephan, Prange, Matthias, Feist, Christin, Groeneveld, Jeroen, Mohtadi, Mahyar (2014). Dataset: Planktonic foraminifera Mg/Ca-based temperatures and planktonic foraminiferal cenus counts of core GeoB10065-7 (Lombok Basin, Indonesia). https://doi.org/10.1594/PANGAEA.837601

DOI retrieved: 2014

Additional Info

Field Value
Imported on November 30, 2024
Last update November 30, 2024
License CC-BY-3.0
Source https://doi.org/10.1594/PANGAEA.837601
Author Steinke, Stephan
Given Name Stephan
Family Name Steinke
More Authors
Prange, Matthias
Feist, Christin
Groeneveld, Jeroen
Mohtadi, Mahyar
Source Creation 2014
Publication Year 2014
Resource Type application/zip - filename: Steinke_2014
Subject Areas
Name: Lithosphere

Related Identifiers
Title: Upwelling variability off southern Indonesia over the past two millennia
Identifier: https://doi.org/10.1002/2014GL061450
Type: DOI
Relation: IsSupplementTo
Year: 2014
Source: Geophysical Research Letters
Authors: Steinke Stephan , Prange Matthias , Feist Christin , Groeneveld Jeroen , Mohtadi Mahyar .