Milankovitch cycles - Wikipedia, the free encyclopedia
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Milankovitch Theory describes the collective effects of changes in the Earth's movements upon its climate, named after Serbian civil engineer and mathematician Milutin Milanković. Milanković mathemat...
en.wikipedia.org/wiki/Milankovitch_cycles
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The eccentricity of Earth's orbit is very small, so Earth's orbit is nearly circular. Earth's orbital eccentricity is less than 0.02. The orbit of Pluto is the most eccentric of any planet in our Solar System.
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www.windows.ucar.edu/tour/link=/physical_science/physic...
www.windows.ucar.edu/tour/link=/physical_science/physics/mechanics/orbit/eccentricity.html&br=braphic&cd=f
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Students use the data and graph constructed in the lesson "Aphelion and Perihelion Pt. 2" to determine the eccentricity of the earth's orbit. ... What is the eccentricity of the earth's orbit? ... The accepted eccentricity for earth's orbit is 1:60.
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eo.nso.edu/dasl/Lessons/Aphelion/index3.htm
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The eccentricity is simply how elliptical the Earth’s orbit around the sun is. Based on Kepler's first law of planetary motion, it can be mathematically described as: ... Perihelion is the moment when the Earth is the closest to the sun in its orbit. Aphelion is the moment when the Earth is the farthest away from the sun.
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ffden-2.phys.uaf.edu/212_fall2003.web.dir/Beth_Caissie/...
ffden-2.phys.uaf.edu/212_fall2003.web.dir/Beth_Caissie/eccentricity.htm
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Earth Mean Orbital Elements (J2000) ... Semimajor axis (AU) 1.00000011 Orbital eccentricity 0.01671022 Orbital inclination (deg) 0.00005 Longitude of ascending node (deg) -11.26064 Longitude of perihelion (deg) 102.94719 Mean Longitude (deg) 100.46435...
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nssdc.gsfc.nasa.gov/planetary/factsheet/earthfact.html
nssdc.gsfc.nasa.gov/planetary/factsheet/earthfact.html
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"What we found at 23 million years ago is a rare congruence of a low point in Earth's eccentricity and a period of minimal variation in obliquity."
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unisci.com/stories/20012/0413012.htm
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The Earth circles the Sun in a flat plane. It is as if the spinning Earth is also rolling around the edge of a giant, flat plate, with the Sun in the center. The shape of the Earth’s orbit—the plate—changes from a nearly perfect circle to an oval shape on a 100,000-year cycle (eccentricity).
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earthobservatory.nasa.gov/Study/Paleoclimatology_Eviden...
earthobservatory.nasa.gov/Study/Paleoclimatology_Evidence/
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To my knowledge, both of these cycles have been detected in the long term changes in the Earth's climate. The eccentricity change is called the 'Milankovitch Cycle' and is thought to regulate the comings and goings of the Ice Ages.
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www.astronomycafe.net/qadir/q2389.html
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The episodic nature of the Earth's glacial and interglacial periods within the present Ice Age (the last couple of million years) have been caused primarily by cyclical changes in the Earth's circumnavigation of the Sun. Variations in the Earth's eccentricity, axial tilt, and precession comprise the three dominant...
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www.homepage.montana.edu/~geol445/hyperglac/time1/milan...
www.homepage.montana.edu/~geol445/hyperglac/time1/milankov.htm
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