Systems Analysis of the Problem of Major Fluctuations of Climate and Glaciation of the Earth

Sergin, V. Ya.; Sergin, S. Ya.

doi:10.1080/00385417.1978.10640214

Cited by 4 publications

(4 citation statements)

References 4 publications

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“…Obviously, it can not be obtained from the general Higgs procedure, which is consistent with the fact that these states have no proper Poincar6 limit [21]. We have since learnt that, for N = 8 as well there exists a singleton representation given by ( [22] and second reference in [8]) D(½,0,8c) ¢ D(1, ½,8v).…”

Section: Note Added In Proofmentioning

confidence: 92%

Multiplet shortening in Osp(N,4)

1984

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We describe a new type of multiplet shortening in Osp(N, 4) which resolves a long-standing puzzle in Kaluza-Klein supergravities. Multiplet shortening implies quantization of mass eigenvalues in units of the inverse AdS radius. While detailed proofs are presented only for N = 3, we discuss implications for N = 8 supergravity and derive the SO(8) assignments of all higher modes on the round seven-sphere.

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Section: Note Added In Proofmentioning

confidence: 92%

Multiplet shortening in Osp(N,4)

1984

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“…Recently, the autofluctuating nature of glacialinterglacial variations was confirmed by Sergin and Sergin (1978) and Sergin (1979) who carried out a study of the origins and thermodynamic mechanism of the large-scale glacial-interglacial variations by constructing a simplified thermodynamic model of the glaciers-ocean-atmosphere global system. They considered an aperiodic (non-fluctuating) regime in the southern hemisphere and a fluctuating one in the northern hemisphere.…”

Section: Development Of Ideasmentioning

confidence: 94%

“…It is very important by itself because an ice sheet, after reaching some critical size, began to spread without any climatic change (Tronov 1951), Weertman 1961). Modelling by Sergin and Sergin (1978) has shown that Milankovitch insolation variations change the period and amplitude of glacial-interglacial fluctuations.…”

Section: External Influencesmentioning

confidence: 99%

Studies of the Antarctic and Present-Day Concepts of Global Glaciation

Chizhov

Kotlyakov

1982

Ann. Glaciol.

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Antarctic researches of the last decades have provided new facts which have made scientists change their ideas. The researches have shown a great difference between the history of the Antarctic and the northern hemisphere glaciation. The former is very old and stable, while the latter was ephemeral. An analogous one to the Antarctic ice sheet in the northern hemisphere is the Greenland inland ice. Both ice sheets are of continental-insular type; the Pleistocene ice sheets were of continental type proper. Icethickness measurements showed the topography of the bed under Antarctic ice and revealed a special type of ice sheet lying partly on the sea-floor: the West Antarctic continental-marine ice sheet. Such ice sheets could exist in the northern hemisphere too. They were especially unstable and their formation and destruction could serve as a triggering mechanism in alternating glacials and interglacials. The main concept is: all the great climatic variations during the Pleistocene were glacioclimatic ones where the feedback mechanism was the most important factor. But there are many details which are uncertain. The Antarctic and Greenland ice sheets are the key regions to research so that problems of glacioclimatology could be solved.

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“…Since the 1965 conference in Boulder, a number of other Ice Age theories have been advocated, ranging from glacial surges (Wilson, 1964(Wilson, , 1966Hollin, 1977) to volcanic dust veils (e.g., Bray, 1977) to interstellar dust clouds (McCrea, 1975). Internal causes have been studied by Sergin and Sergin (1978) and in the Appendix of Saltzman (1978), for example. But the Milankovitch theory, perhaps because it is the most deterministic theory, has been gaining adherents.…”

Section: Introductionmentioning

confidence: 99%

Ice Ages and Orbital Variations: Some Simple Theory and Modeling

Schneider

Thompson

1979

Quat. res.

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Possible physical mechanisms relating orbital-element variations (i.e., the “Milankovitch mechanism” of insolation regime changes) to Quaternary glacial/interglacial transitions are explored quantitatively. These include the seasonal cycle of albedo and the zonal distribution of thermal inertia. These mechanisms can interact with the perturbations to zonal average and seasonal average insolation caused by orbital-element variations to cause a global annual temperature residual, even though such variations can cause only a negligible change in global annual insolation.Numerical model experiments with a zonal energy balance model show that the relative interactions between insolation regime changes and seasonally and latitudinally varying albedo and latitudinally varying thermal inertia are roughly of comparable magnitude. Encouraging agreements between model experiments and data are evident, but these (and others') simulations are still a long way away from providing a satisfying explanation of the physical processes that could fully explain the apparent connections between orbital-element variations and Quaternary glaciations.It seems likely that no single physical process can be identified as predominate, and rather, the hypothesized physical connection between insolation regime changes and glacial/interglacial transitions will have to be built on the interactions of a number of processes on both short and long time scales.

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Systems Analysis of the Problem of Major Fluctuations of Climate and Glaciation of the Earth

Cited by 4 publications

References 4 publications

Multiplet shortening in Osp(N,4)

Multiplet shortening in Osp(N,4)

Studies of the Antarctic and Present-Day Concepts of Global Glaciation

Ice Ages and Orbital Variations: Some Simple Theory and Modeling

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