Age model and Nd/Ca ratio of planktonic foraminifera from sediment core MD05-2925 off the Solomon Sea

DOI

Abstract: The Intertropical Convergence Zone (ITCZ) encompasses the heaviest rain belt on the Earth. Few direct long-term records, especially in the Pacific, limit our understanding of long-term natural variability for predicting future ITCZ migration. Here we present a tropical precipitation record from the Southern Hemisphere covering the past 282,000 years, inferred from a marine sedimentary sequence collected off the eastern coast of Papua New Guinea. Unlike the precession paradigm expressed in its East Asian counterpart, our record shows that the western Pacific ITCZ migration was influenced by combined precession and obliquity changes. The obliquity forcing could be primarily delivered by a cross-hemispherical thermal/pressure contrast, resulting from the asymmetric continental configuration between Asia and Australia in a coupled East Asian-Australian circulation system. Our finding suggests that the obliquity forcing may play a more important role in global hydroclimate cycles than previously thought.

Supplement to: Liu, Yi; Lo, Li; Shi, Zhengguo; Wei, Kuo-Yen; Chou, Chien-Ju; Chen, Yi-Chi; Chuang, Chih-Kai; Wu, Chung-Che; Mii, Horng-Sheng; Peng, Zicheng; Amakawa, Hiroshi; Burr, George S; Lee, Shih-Yu; Elderfield, Henry; Shen, Chuan-Chou (2015): Obliquity pacing of the western Pacific Intertropical Convergence Zone over the past 282,000 years. Nature Communications, 6(1)

Identifier
DOI https://doi.org/10.1594/PANGAEA.899212
Related Identifier https://doi.org/10.1038/ncomms10018
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.899212
Provenance
Creator Liu, Yi; Lo, Li ORCID logo; Shi, Zhengguo ORCID logo; Wei, Kuo-Yen ORCID logo; Chou, Chien-Ju; Chen, Yi-Chi; Chuang, Chih-Kai ORCID logo; Wu, Chung-Che ORCID logo; Mii, Horng-Sheng ORCID logo; Peng, Zicheng; Amakawa, Hiroshi; Burr, George S ORCID logo; Lee, Shih-Yu ORCID logo; Elderfield, Henry; Shen, Chuan-Chou ORCID logo
Publisher PANGAEA
Publication Year 2019
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 548 data points
Discipline Earth System Research
Spatial Coverage (151.460 LON, -9.344 LAT); Egum