High obliquity, high angular momentum Earth as Moon's origin revisited
by Advanced Kinematic Model of Earth-Moon System
Abstract
Matija Cuk et.al (2016) have proposed a new model for the birth and
tidal evolution of our natural satellite Moon, born from lunar accretion
of impact generated terrestrial debris in the equatorial plane of high
obliquity, high angular momentum Earth. This paper examines their
findings critically in the light of Advanced Kinematic Model (AKM) which
includes Earth’s obliquity(ɸ), Moon’s orbital plane inclination (α) ,
Moon’s obliquity (β) and lunar’s orbit eccentricity (e). It is shown
that AKM’s valid range of application is from 45RE to
60.33RE . The evolution of α, β, e is in correspondence
with the simulation results of Matija Cuk et.al (2016) but evolution of
Earth’s obliquity has a break at 45RE . According to
AKM, earlier than 45RE Earth should achieve 0° obliquity
in order to achieve the modern value of eco-friendly 23.44° obliquity.
Cuk et al (2016) donot explain how this can be achieved. AKM stands
vindicated because using protocol exchange algorithm
http://doi.org/10.1038/protex.2019.017, AKM has successfully given
precise theoretical formalism of Observed LOD curve for the last 1.2Gy
time span opening the way for early warning and forecasting methods for
Earth-quake and sudden volcanic eruptions. This paper gives us an
algorithm to determine the short term and long term changes in Earth’s
obliquity which is related to Weather and Climate Extremes. Hence this
paper gives us the mathematical tool for predicting the Earth’s climate
extreme