1) The 100,000 year stretch-changes in orbit : When eccentricity is high one of the hemispheres will have very hot summers this means more snowmelt.When the Earth is closest to the sun the Earth speeds up.if this event is in winter it will result in short winters and long summers.meaning more snowmelt. when eccentricity is low it is the opposite so there is a lack of snowmelt so glaciers can grow.
2) The 42,000 year tilt: in the present day the angle of tilt is 23.5 degrees.Over a period of 40,000 years it can change from 20 to 24 degrees.Wen the angle of inclination is smaller the seasonal difference between the poles and the equator is similar.if there was no inclination there would be no seasons.
3) The 21,000 year wobble: Over a 21,000 year period the Earth makes a wobbling motion.Northern hemisphere summer occur when the Earths axis is tilted toward the sun.
2) The 42,000 year tilt: in the present day the angle of tilt is 23.5 degrees.Over a period of 40,000 years it can change from 20 to 24 degrees.Wen the angle of inclination is smaller the seasonal difference between the poles and the equator is similar.if there was no inclination there would be no seasons.
3) The 21,000 year wobble: Over a 21,000 year period the Earth makes a wobbling motion.Northern hemisphere summer occur when the Earths axis is tilted toward the sun.
Milankovitch said: 1) input of solar energy into the northern hemisphere is more important than the southern hemisphere for controlling glaciation.
2) Glacial periods are most severe when the three cycles come together to minimise the amount of solar energy reaching the Northern hemisphere.
3) interglacials occur when the 3 orbital factors combine to maximise solar energy in the Northern hemisphere during summer.
2) Glacial periods are most severe when the three cycles come together to minimise the amount of solar energy reaching the Northern hemisphere.
3) interglacials occur when the 3 orbital factors combine to maximise solar energy in the Northern hemisphere during summer.