: Paleoclimatología: Milankovitch cycle

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Milankovitch cycle

Milankovitch cycles are cyclical variations in parameters of the Earth's orbit (the Milankovitch parameters) that generate variations in the Earth's climate. The main cycles are as follows. The eccentricity cycle : this is the variation in the shape of the Earth's orbit, which oscillates between a more circular and a more elliptical shape. The main cycle has a period of around 400,000 years, with secondary cycles of the order of 100,000 years. The obliquity cycle : the variation in the inclination of the Earth's axis of rotation in relation to its orbit. This cycle has a period of around 41,000 years. The cycle of the precession of the equinoxes : the variation in the orientation of the Earth's axis of rotation. This cycle has a period of around 26,000 years. Milankovitch cycles are used in astronomical paleoclimate theory. The main consequence of these natural climatic changes is glacial and interglacial periods. Their study in terms of periodic phenomena is the domain of cyclostratigraphy. (Adapted and translated from: https://fr.wikipedia.org/wiki/Cycles_de_Milankovitch)

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