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Sedimentary noise and sea levels linked to land–ocean water exchange and obliquity forcing

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  • Mingsong Li

    (China University of Geosciences
    George Mason University
    Pennsylvania State University, University Park)

  • Linda A. Hinnov

    (China University of Geosciences
    George Mason University)

  • Chunju Huang

    (China University of Geosciences
    China University of Geosciences)

  • James G. Ogg

    (China University of Geosciences
    Purdue University)

Abstract

In ancient hothouses lacking ice sheets, the origins of large, million-year (myr)-scale sea-level oscillations remain a mystery, challenging current models of sea-level change. To address this mystery, we develop a sedimentary noise model for sea-level changes that simultaneously estimates geologic time and sea level from astronomically forced marginal marine stratigraphy. The noise model involves two complementary approaches: dynamic noise after orbital tuning (DYNOT) and lag-1 autocorrelation coefficient (ρ1). Noise modeling of Lower Triassic marine slope stratigraphy in South China reveal evidence for global sea-level variations in the Early Triassic hothouse that are anti-phased with continental water storage variations in the Germanic Basin. This supports the hypothesis that long-period (1-2 myr) astronomically forced water mass exchange between land and ocean reservoirs is a missing link for reconciling geological records and models for sea-level change during non-glacial periods.

Suggested Citation

  • Mingsong Li & Linda A. Hinnov & Chunju Huang & James G. Ogg, 2018. "Sedimentary noise and sea levels linked to land–ocean water exchange and obliquity forcing," Nature Communications, Nature, vol. 9(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-03454-y
    DOI: 10.1038/s41467-018-03454-y
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    Cited by:

    1. Mingsong Li & Timothy J. Bralower & Lee R. Kump & Jean M. Self-Trail & James C. Zachos & William D. Rush & Marci M. Robinson, 2022. "Astrochronology of the Paleocene-Eocene Thermal Maximum on the Atlantic Coastal Plain," Nature Communications, Nature, vol. 13(1), pages 1-13, December.

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