Climate of the Past
Climate of the Past
CP
Articles | Volume 18, issue 4
Articles | Volume 18, issue 4
https://doi.org/10.5194/cp-18-713-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-18-713-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 4
Research article
 | 
08 Apr 2022
Research article |  | 08 Apr 2022

Secular and orbital-scale variability of equatorial Indian Ocean summer monsoon winds during the late Miocene

Clara T. Bolton, Emmeline Gray, Wolfgang Kuhnt, Ann E. Holbourn, Julia Lübbers, Katharine Grant, Kazuyo Tachikawa, Gianluca Marino, Eelco J. Rohling, Anta-Clarisse Sarr, and Nils Andersen

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https://doi.org/10.5194/cp-18-713-2022-supplement

Data sets

Late Miocene benthic stable isotope data, age model, and X-Ray Fluorescence data from IODP Site U1443, equatorial Indian Ocean. Clara T. Bolton, Emmeline Gray, Wolfgang Kuhnt, Ann Holbourn, Julia Lübbers, Katharine M. Grant, Kazuyo Tachikawa, Gianluca Marino, Eelco J. Rohling, Anta Clarisse Sarr, and Nils Andersen https://doi.org/10.1594/PANGAEA.935166

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Short summary
The timing of the initiation and evolution of the South Asian monsoon in the geological past is a subject of debate. Here, we present a new age model spanning the late Miocene (9 to 5 million years ago) and high-resolution records of past open-ocean biological productivity from the equatorial Indian Ocean that we interpret to reflect monsoon wind strength. Our data show no long-term intensification; however, strong orbital periodicities suggest insolation forcing of monsoon wind strength.
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