Matuyama 41,000-year cycles: North Atlantic Ocean and northern hemisphere ice sheets
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During the middle Pleistocene, a change occurred in the climatic response of northern hemisphere ice sheets and the high-latitude North Atlantic Ocean to orbitally controlled variations in insolation. The dominant periodicity during the late Pliocene and early Pleistocene (2.47 Myr B.P. to about 0.735 Myr B.P.) was 41,000 years; thereafter, the dominance shifted to a period near 100,000 years. Although orbital forcing is the primary cause of each of these rhythmic responses, it does not explain the mid-Pleistocene shift of power. Changes in the solid boundary conditions of the ocean-air-ice system, and particularly in mountain elevation, are implicated.
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Using 10^16 < v < 10^18 Pa s and λ = 200 km leads to ∼2000 < τr <∼200 000 years, a time range considerably longer than the post-LIA deglaciation and including full Pleistocene glacial-interglacial cycles.
“Using 10 16 < v < 10 18 Pa s and λ = 200 km leads to ∼ 2000 < τ r <∼ 200 000 years, a time range considerably longer than the post-LIA deglaciation and including full Pleistocene glacial-interglacial cycles”
From Fast uplift in the southern Patagonian Andes due to long- and short-term deglaciation and the asthenospheric window underneath (2024) · cites this paper as Ruddiman et al., 1986
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References 37 · Cited by 514
- Authors
- Ruddiman, W. F., Raymo, M., & McIntyre, A.
- Affiliations
- Lamont-Doherty Earth Observatory (US)
- Queens College, CUNY (US)
- Venue
- Earth and Planetary Science Letters
- Publisher
- Elsevier BV
- Published
- 1986-10
- Volume
- 80
- Issue
- 1-2
- Pages
- 117-129
- ISSN
- 0012-821X (ISSN-L)
- OpenAlex
- W2079073277
- Cited by
- 514
- References
- 37
- Citations by year
- 2026: 6 · 2025: 7 · 2024: 10 · 2023: 18 · 2022: 15 · 2021: 20 · 2020: 10 · 2019: 11 · 2018: 10 · 2017: 10 · 2016: 6 · 2015: 12 · 2014: 13 · 2013: 13 · 2012: 13
- FWCI
- 17.52
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Earth and Planetary Science Letters (publishedVersion, cc-by-nc-nd)
- Funders
- National Science Foundation
- Division of Ocean Sciences
- Topics
- Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Geology and Paleoclimatology Research
- Physical Sciences › Environmental Science › Global and Planetary Change › Climate variability and models
- Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine and environmental studies
- Keywords
- 100 ka cycle, Mid-Pleistocene Transition, orbital forcing, solar irradiation, ice sheets, North Atlantic, boundary conditions, Pleistocene climate, Pliocene climate
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