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North Atlantic climatic oscillations revealed by deep Greenland ice cores
Abstract
Five long-term oxygen isotope (δ) records along ice cores are discussed, in particular two from the Greenland ice sheet that exhibit persistent δ oscillations with a quasi-periodicity of ca. 2550 years. A detailed study of the δ cycles in the Wisconsin glaciation show that they cannot be ascribed to discontinuities in the cores, nor to ice-dynamic instabilities in the ice sheet. In the Holocene, the δ cycles are less pronounced, but they are concurrent with the fluctuating glacier extention elsewhere, which substantiates their climatic significance. An anti-correlation with 14C concentration in atmospheric CO2, and with 10Be deposition rates on the ice sheets, suggests a connection between climate and solar processes, but a conclusion on this point must await clarification of the terrestrial circulation and mixing processes, and the relationship between the solar outputs of radiation and particulate matter.
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Cited by
Hansen, J., Sato, M., Ruedy, R., Lo, K., Lea, D. W., & Medina-Elizade, M. (2006) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0606291103 · Cited by 2,134
The origin of Arctic precipitation under present and glacial conditions
JOHNSEN, S. J., DANSGAARD, W., & WHITE, J. W. C. (1989) · Tellus B · doi:10.1111/j.1600-0889.1989.tb00321.x · Cited by 561
Self-citationRind, D., Peteet, D., Broecker, W., McIntyre, A., & Ruddiman, W. (1986) · Climate Dynamics · doi:10.1007/bf01277044 · Cited by 241
Metadata
- Authors
- Dansgaard, W., Johnsen, S. J., Clausen, H. B., Dahl-Jensen, D., Gundestrup, N., Hammer, C. U., & Oeschger, H.
- Venue
- Geophysical Monograph Series
- Publisher
- American Geophysical Union
- Published
- 1984
- Pages
- 288-298
- ISSN
- 0065-8448 (ISSN-L)
- OpenAlex
- W1491826018
- Cited by
- 394
- References
- 0
- FWCI
- 12.22
- Type
- book chapter
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: North Atlantic climatic oscillations revealed by deep Greenland ice cores. https://app.cochat.ai/papers/10.1029/gm029p0288
- The paper
- Dansgaard, W., Johnsen, S. J., Clausen, H. B., Dahl-Jensen, D., Gundestrup, N., Hammer, C. U., & Oeschger, H. (1984). North Atlantic climatic oscillations revealed by deep Greenland ice cores. Geophysical Monograph Series. https://doi.org/10.1029/gm029p0288
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