Milankovitch cycles

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Beschreibung

Milankovitch Theory describes the collective effects of changes in the Earth's movements upon its climate, named after Serbian civil engineer and mathematician Milutin Milankovi . Milankovi mathematically theorised that variations in eccentricity, axial tilt, and precession of the Earth's orbit determined climatic patterns on Earth, resulting in 100,000-year ice age cycles of the Quaternary glaciation over the last few million years. The Earth's axis completes one full cycle of precession approximately every 26,000 years. At the same time, the elliptical orbit rotates, more slowly, leading to a 23,000-year cycle between the seasons and the orbit. In addition, the angle between Earth's rotational axis and the normal to the plane of its orbit moves from 22.1 degrees to 24.5 degrees and back again on a 41,000-year cycle. Currently, this angle is 23.44 degrees and is decreasing. The Milankovitch theory of climate change is not perfectly worked out; in particular, the largest observed response is at the 100,000-year timescale, but the forcing is apparently small at this scale, in regard to the ice ages.

Produktinformationen

Titel:

Milankovitch cycles

Untertitel:

Earth, Civil engineering, Mathematician, Milutin Milankovic, Orbital eccentricity, Axial tilt, Precession, Ice age, Quaternary glaciation, Carbon dioxide, Cosmic ray, Ice sheet dynamics

Editor:

Frederic P. Miller

Agnes F. Vandome

John McBrewster

EAN:

9786130273965

ISBN:

978-613-0-27396-5

Format:

Fachbuch

Herausgeber:

Alphascript Publishing