Insolation Variations and Ice Age Cycles in the Quaternary
نویسندگان
چکیده
منابع مشابه
the relationship between listening self efficacy, listening comprehension, gende, and age in male and female english learners
چکیده هدف اصلی تحقیق حاضر مطالعه و بررسی رابطه بین خودکارامدی شنیداری با درک شنیداری بود.همچنین رابطه درک شنیداری وخودکارآمدی شنیداری با جنسیت و رابطه خودکارامدی شنیداری با سن نیز مورد بررسی قرار گرفت.تعداد شصت زبان اموز-سی دختر و سی پسر- کانون زبان ایران در مرکز خرم آباد به صورت تصادفی انتخاب شدند. روشهای به کار رفته در جمع اوری داده ها عبارت بودند ازبرسشنامه خودکارآمدی و تست درک شنیداری لانگ...
15 صفحه اولEarly Pleistocene glacial cycles and the integrated summer insolation forcing.
Long-term variations in Northern Hemisphere summer insolation are generally thought to control glaciation. But the intensity of summer insolation is primarily controlled by 20,000-year cycles in the precession of the equinoxes, whereas early Pleistocene glacial cycles occur at 40,000-year intervals, matching the period of changes in Earth's obliquity. The resolution of this 40,000-year problem ...
متن کاملIntegrated summer insolation forcing and 40,000-year glacial cycles: The perspective from an ice-sheet/energy-balance model
[1] Although the origins of the 40,000-year glacial cycles during the early Pleistocene are readily attributed to changes in Earth’s obliquity (also having a 40,000-year period), the lack of ice-volume variability at precession periods (20,000 years) is difficult to reconcile with most parameterizations of the insolation forcing. It was recently proposed that precession’s influence on glaciatio...
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[1] Mercury’s coupled 3:2 spin‐orbit resonance in conjunction with its relatively high eccentricity of ∼0.2 and near‐zero obliquity results in both a latitudinal and longitudinal variation in annual average solar insolation and thus equatorial hot and cold regions. This results in an asymmetric temperature distribution in the lithosphere and a long wavelength lateral variation in lithosphere st...
متن کاملThe Effect of Milankovitch Variations in Insolation on Equatorial Seasonality
Although the sun crosses the equator 2 times per year at the equinoxes, at times in the past the equatorial insolation has had only one maximum and one minimum throughout the seasonal cycle because of Milankovitch orbital variations. Here a state-of-the-art coupled atmosphere–ocean general circulation model is used to study the effect of such insolation forcing on equatorial surface properties,...
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ژورنال
عنوان ژورنال: Journal of Geography (Chigaku Zasshi)
سال: 2007
ISSN: 0022-135X,1884-0884
DOI: 10.5026/jgeography.116.6_768