Part-III Addendum to (First Will Come Reversal Excursions Then the Flip)

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 cycles, collectively known as the Milankovitch Cycles for Milutin Milankovitch, the Serbian astronomer and mathematician who is generally credited with calculating their magnitude. Taken in unison, variations in these three cycles creates alterations in the seasonality of solar radiation reaching the Earth’s surface. These times of increased or decreased solar radiation directly influence the Earth’s climate system, thus impacting the advance and retreat of Earth’s glaciers.

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The first of the three Milankovitch Cycles is Earth’s axial tilt. It is the inclination of the Earth’s axis in relation to its plane of orbit around the Sun. Oscillations in the degree of Earth’s axial tilt occur on a periodicity of 41,000 years from 21.5 to 24.5 degrees. Today the Earth’s axial tilt is about 23.5 degrees, which largely accounts for our seasons.  Because of the periodic variations of this angle the severity of the Earth’s seasons changes. With less axial tilt the Sun’s solar radiation is more evenly distributed between winter and summer. However, less tilt also increases the difference in radiation receipts between the equatorial and Polar Regions.

The second principle of the Milankovitch Cycle is Earth’s precession. Precession is the Earth’s slow wobble as it spins on axis. This wobbling of the Earth on its axis can be likened to a top running down, and beginning to wobble back and forth on its axis. The precession of Earth wobbles from pointing at Polaris (North Star) to pointing at the star Vega. When this shift to the axis pointing at Vega occurs, Vega would then be considered the North Star. This top-like wobble, or precession, has a periodicity of 23,000 years.

The third principle of the Milankovitch Cycles is the Earth’s eccentricity. Eccentricity is, simply, the shape of the Earth’s orbit around the Sun. This constantly fluctuating, orbital shape ranges between more and less elliptical (0 to 5% ellipticity) on a cycle of about 100,000 years. These oscillations, from more elliptic to less elliptic, are of prime importance to glaciation in that it alters the distance from the Earth to the Sun, thus changing the distance the Sun’s short wave radiation must travel to reach Earth, subsequently reducing or increasing the amount of radiation received at the Earth’s surface in different seasons.

BREAKING NEWS: Scientists Coming to Terms of Earth’s Axis Drift or Wobble

Using observational and model-based data, scientists from NASA’s Jet Propulsion Laboratory have proposed they have for the first time identified three broadly-categorized processes responsible for this drift or wobble of Earth’s axis. They titled their article: Scientists ID Three Causes of Earth’s Spin Axis Drift. However, it appears they are calling the natural expansion and contraction of glaciation as two of the three processes.

But the true historical data which is measured over millions of years clearly shows a pattern of long-term, mid-term, and short-term cycles of warming trends and cooling trends. A preponderance of evidence, most of which is from the latest findings markedly identify “two” main drivers which effect the Earth’s tilt, wobble, and equatorial bulge – in short…it breaks down to fire and ice; glacial fluctuation and mantle convection.

One example is Milankovitch-Cycles, identifying a 26,000 – 41,000 – 100,000 year cycles.

The JPL paper published in the scientific journal Earth and Planetary Science Letters, summarizes their study with the following statement: “With these three broad contributors identified, scientists can distinguish mass changes and polar motion caused by long-term Earth processes over which we have little control from those caused by climate change. They now know that if Greenland’s ice loss accelerates, polar motion likely will, too.”

I would suggest you read their statement two or three times and notice the carefully chosen words. “scientists can distinguish mass changes and polar motion caused by long-term Earth processes over which we have little control” vs “those caused by climate change” [which is the bait-and-switch word for global warming]. This is to say climate change is a historically accepted international scientific term. The words global warming is a made up name born by James Hansen and Michael Mann at a 1988 US Senate hearing based on a computer generated manipulated analysis.

The JPL paper describes their research findings as “scientists have for the first time identified… processes responsible for this drift.” The article below I published on September 9th 2012.

The Cause of Heating and Cooling of Earth’s Core and Climate Change

As a living entity, Earth fights for its survival. If internal or external events begin to throw Earth out of balance i.e. over heating via cosmic rays, charged particles, solar flares, or CMEs (coronal mass ejections) – or dramatic cooling via glacial enhancement i.e. ice age – Earth is always in process of bringing itself back to its ambient temperature. orbital, tilt, or magnetic alignment – it begins to correct itself. When oceanic tectonic subductions occur, it cools the mantle and outer core. To balance this shift in temperatures, the Earth’s core increases heat – and as a result releases what is known as “mantle plumes”. These plumes filled with super-heated liquid rock float up to the ocean bottom surface.

This action both cools the outer core and heats the oceans. As a result of heated oceans, we get tropical storms, hurricanes, and various forms of extreme weather. When troughs, rifts, and subduction zones, reset as a result of convection, scenario’s develop creating higher probability for earthquakes, tsunamis, and volcanoes.

New Equation: (2012)
Increase Charged Particles → Decreased Magnetic Field → Increase Outer Core Convection → Increase of Mantle Plumes → Increase in Earthquake and Volcanoes → Cools Mantle and Outer Core → Return of Outer Core Convection


Science Of Cycles keeps you tuned-in and knowledgeable of what we are discovering, and how some of these changes will affect our communities and ways of living.