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the claim

Periodic variations in Earth's orbital eccentricity influence glacial and interglacial cycles through Milankovitch cycles.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
9 sources for · 2 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that periodic variations in Earth's orbital eccentricity influence glacial and interglacial cycles through Milankovitch cycles?

Yes. Multiple sources, including NASA and peer-reviewed modeling studies, state that periodic variations in Earth's orbital eccentricity pace or synchronize glacial and interglacial cycles as part of Milankovitch cycles. A few sources note eccentricity's direct insolation effect is small and mainly modulates precession, but they still tie it to glacial-cycle timing.

Verdict: SUPPORTED · 9 sources for, 2 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 9
Milankovitch cycles
Get citation
Milankovitch cycles. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Milankovitch_cycles

Evidence against · 2
Helium isotope record, CaCO3 concentration and accumulation rate of ODP Site 138-849 (Table 2), supplementary data to: Winckler, Gisela; Anderson, Robert F; Stute, Martin; Schlosser, Peter (2004): Does interplanetary dust control 100 kyr glacial cycles?. Quaternary Science Reviews, 23(18-19), 1873-1878
2004
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Helium isotope record, CaCO3 concentration and accumulation rate of ODP Site 138-849 (Table 2), supplementary data to: Winckler, Gisela; Anderson, Robert F; Stute, Martin; Schlosser, Peter (2004): Does interplanetary dust control 100 kyr glacial cycles?. Quaternary Science Reviews, 23(18-19), 1873-1878. (2004). dx.doi.org. https://doi.org/10.1594/PANGAEA.742954

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More for · 8
Orbital eccentricity
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Orbital eccentricity. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Orbital_eccentricity

Milankovitch (Orbital) Cycles and Their Role in Earth's Climate - NASA Science
Get citation
Milankovitch (Orbital) Cycles and Their Role in Earth's Climate - NASA Science. (n.d.). science.nasa.gov. https://science.nasa.gov/science-research/earth-science/milankovitch-orbital-cycles-and-their-role-in-earths-climate/

The role of Jupiter in driving Earth's orbital evolution
2014
Get citation
The role of Jupiter in driving Earth's orbital evolution. (2014). doi.org. https://doi.org/10.48550/arxiv.1401.6741

When volcanoes record Milankovitch cycles
2025
Get citation
Sottili, G. & Palladino, D. M. (2025). When volcanoes record Milankovitch cycles. doi.org. https://doi.org/10.3389/feart.2025.1569128

Earth's Climate in Time: Milankovitch Cycles and the Role of the Moon on Earth's Axial Tilt via Numerical Orbit Integrations
2025
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Earth's Climate in Time: Milankovitch Cycles and the Role of the Moon on Earth's Axial Tilt via Numerical Orbit Integrations. (2025). doi.org. https://doi.org/10.5281/zenodo.15534204

Earth's orbital parameters and cycle stratigraphy
2005
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Earth's orbital parameters and cycle stratigraphy. (2005). doi.org. https://doi.org/10.1017/cbo9780511536045.005

The role of orbital forcing, carbon dioxide and regolith in 100 kyr glacial cycles
2011
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Ganopolski, A. & Calov, R. (2011). The role of orbital forcing, carbon dioxide and regolith in 100 kyr glacial cycles. doi.org. https://doi.org/10.5194/cpd-7-2391-2011

Glacial cycles and solar insolation: the role of orbital, seasonal, and spatial variations
2010
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Kaufmann, R. K. & Juselius, K. (2010). Glacial cycles and solar insolation: the role of orbital, seasonal, and spatial variations. doi.org. https://doi.org/10.5194/cpd-6-2557-2010

More against · 1
A Deconstruction of Orbital Insolation Variability and the Pleistocene Ice Ages
2019
Get citation
Shallue, M. R. (2019). A Deconstruction of Orbital Insolation Variability and the Pleistocene Ice Ages. archive.org. https://archive.org/details/shallue_a_deconstruction

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