scholarly journals High obliquity, high angular momentum Earth as Moon’s origin revisited by Advanced Kinematic Model of Earth-Moon System

2020 ◽  
Author(s):  
Bijay K Sharma

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) silent on this point. 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 1.2 Gy 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.

Author(s):  
Roy Livermore

The Earth’s climate changes naturally on all timescales. At the short end of the spectrum—hours or days—it is affected by sudden events such as volcanic eruptions, which raise the atmospheric temperature directly, and also indirectly, by the addition of greenhouse gases such as water vapour and carbon dioxide. Over years, centuries, and millennia, climate is influenced by changes in ocean currents that, ultimately, are controlled by the geography of ocean basins. On scales of thousands to hundreds of thousands of years, the Earth’s orbit around the Sun is the crucial influence, producing glaciations and interglacials, such as the one in which we live. Longer still, tectonic forces operate over millions of years to produce mountain ranges like the Himalayas and continental rifts such as that in East Africa, which profoundly affect atmospheric circulation, creating deserts and monsoons. Over tens to hundreds of millions of years, plate movements gradually rearrange the continents, creating new oceans and destroying old ones, making and breaking land and sea connections, assembling and disassembling supercontinents, resulting in fundamental changes in heat transport by ocean currents. Finally, over the very long term—billions of years—climate reflects slow changes in solar luminosity as the planet heads towards a fiery Armageddon. All but two of these controls are direct or indirect consequences of plate tectonics.


1979 ◽  
Vol 84 (2) ◽  
pp. 178-181 ◽  
Author(s):  
B. Haas ◽  
H.R. Andrews ◽  
O. Häusser ◽  
D. Horn ◽  
J.F. Sharpey-Schafer ◽  
...  

2001 ◽  
Vol 86 (18) ◽  
pp. 3993-3996 ◽  
Author(s):  
S. K. Dutta ◽  
D. Feldbaum ◽  
A. Walz-Flannigan ◽  
J. R. Guest ◽  
G. Raithel

1989 ◽  
Vol 39 (3) ◽  
pp. 1158-1161 ◽  
Author(s):  
P. D. Cottle ◽  
O. N. Bignall

2018 ◽  
Vol 98 (4) ◽  
Author(s):  
C. S. Palshetkar ◽  
D. J. Hinde ◽  
M. Dasgupta ◽  
E. Williams ◽  
K. Ramachandran ◽  
...  

1974 ◽  
Vol 10 (1-2) ◽  
pp. 51-64 ◽  
Author(s):  
K Forssten ◽  
A Hasselgren ◽  
Ph Monseu ◽  
A Nilsson ◽  
Z P Sawa

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