Results 61 to 70 of about 506 (176)
Self-sustained oscillations and global climate changes
Scientific Reports, 2020 The periodic changes of atmospheric CO2 and temperature over the last 5 Myr reveal three features that challenge current climate research, namely: (i) the mid-Pleistocene transition of dominant 41-kyr cycles to dominant 100-kyr cycles, (ii) the absence ...
Luis G. Arnaut, Santiago Ibáñez
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A New Role for the AMOC During the Ice Ages
Paleoceanography and Paleoclimatology, Volume 40, Issue 10, October 2025.Abstract The Atlantic's Meridional Overturning Circulation (AMOC) collapsed during the last glacial termination, and the collapse led to warmings in both hemispheres. It is not clear, however, how the warmings occurred. The warmings are attributed here to a component of the AMOC that has received relatively little attention—the upshifts of the AMOC's ...
J. R. Toggweiler, Weimin Si
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Sea Ice Response to Orbital Forcing in Idealized Climate Model Experiments
Paleoceanography and Paleoclimatology, Volume 40, Issue 10, October 2025.Abstract The Earth's glacial cycles are influenced by variations in its orbital parameters, particularly obliquity, precession, and eccentricity. These variations alter solar radiation distribution, impacting climate dynamics and sea ice formation. The effects of obliquity and eccentricity‐modulated precession on sea ice area and thickness are analyzed
G. R. O’Neill, A. J. Broccoli
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Glacial Cycles and Milankovitch Forcing
, 2015 Using a recent conceptual model of the glacial-interglacial cycles we present more evidence of Milankovitch cycles being the trigger for retreat and forming of ice sheets in the cycles. This model is based on a finite approximation of an infinite dimensional model which has three components: Budyko's energy balance model describing the annual mean ...
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Sedimentology, Volume 72, Issue 6, Page 1755-1785, October 2025.ABSTRACT An investigation of allogenic forcings on shallow‐marine strata of the Miocene–Pliocene Kueichulin Formation, Taiwan Western Foreland Basin, reveals that shifts in palaeoenvironments were strongly controlled by: (1) orogenesis and basin subsidence, (2) precession‐driven hydroclimate and (3) obliquity‐driven atmospheric and ocean circulation ...
Amy I. Hsieh +7 more
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Geophysical Research Letters, Volume 52, Issue 18, 28 September 2025.Abstract While orbital forcing‐induced weakening of the Atlantic meridional overturning circulation (AMOC) potentially facilitated glacial initiation during the Quaternary glacial‐interglacial cycles, this mechanism has remained to be confirmed by atmosphere‐ocean general circulation models (AOGCMs).
Haobo Liu +5 more
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Geophysical Research Letters, Volume 52, Issue 17, 16 September 2025.Abstract Understanding how alluvial stratigraphy responds to sediment supply perturbations is critical for interpreting past environmental changes from the sedimentary record, characterizing subsurface reservoirs, and forecasting future landscape evolution. However, identifying and quantifying sediment supply signals preserved in the rock record remain
Youwei Wang, Hemmo A. Abels
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Uniformity of the upper Famennian Milankovitch cycle in China
Chinese Science Bulletin, 2000 Research on chemo-biostratigraphy reveals that the periodic fluctuation of Ce/La ratios in carbonate sequence may reflect Milankovitch 100 ka eccentricity cyclicity. The Ce/La curve of the upper Famennian of Huangmao (Guangxi) may be well correlated to that of Muhua (Guizhou) and of Mid-Tarim (Xinjiang).
Weicheng Hao +2 more
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Late Quaternary record of 100 ka depositional cycles on the Larache shelf (NW Morocco)
Open GeosciencesThis study examines the stratigraphic architecture of the Upper Pleistocene on the Larache margin, NW Moroccan Atlantic, focusing on the impact of glacio-eustatic cycles. Utilizing seismic analysis, we identified four major seismic sequences (UD, UC, UB,
Raki Amine, Jemily Linda, Mhammdi Nadia
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Research Status and Development Direction of Well Log Cyclostratigraphy
Cejing jishuWell log cyclostratigraphy has become the foundation for studying many key scientific issues in the field of geosciences by identifying, extracting, and interpreting astronomical cycles recorded by geophysical logs. This paper analyzes the driving forces
PENG Cheng, ZOU Changchun, CAO Jinyu
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