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conferenceseries
.com
Volume 8, Issue 8 (Suppl)
J Earth Sci Clim Change
ISSN: 2157-7617 JESCC, an open access journal
Earth Science Congress 2017
September 18-19, 2017
September 18-19, 2017 Hong Kong
6
th
International Conference on
Earth Science and Climate Change
Origin of Ice Ages
George Chilingar
1
, O G Sorokhtin
2
, L Khilyuk
3
, M Lackpour
4
and Wennan Long
5
1
University of Southern California, USA
2
Institute of Oceanology of Russian Academy of Sciences, Russia
3
Rudolf W. Gunnerman Energy and Environmental Laboratory, USA
4
California State University Long Beach, USA
5
Lederhos Engineering Consulting, USA
T
he near-surface temperatures of the Earth are strongly affected by the precession angle (Ψ). Precession, in a revolving
body, occurs due to the deviation of its mass distribution from the complete arrival symmetry. Precession angle affects the
Earth’s climate. Decrease of the precession angle is accompanied by a noticeable cooling of the climate. Glaciation emerges as
soon as the Earth’s average temperature reaches some critical value. As a result of the interaction between the Moon and Earth
during the Pleistocene time, slow (but orderly) climate cooling episodes occurred periodically. The cooling periods lasted
about 100,000-120,000 years and magnitude of cooling was 8-10
o
C. After the formation of thick ice covers, the climate warmed
up by the same amount after a few thousand years. Glaciation degraded just as rapidly. Thus, Sorokhtin et al. (2010) were able
to forecast the climate changes in the future. In the future (2020), despite releases of atmospheric gases, there will be a severe
cooling down period.
Biography
George Chilingar is an American-Armenian Professor of Civil and Petroleum Engineering at the University of Southern California (USC). He has received his
Bachelor’s degree and Master’s degree in Petroleum Engineering and PhD in Geology, all at USC. He has published 72 books and over 500 articles on geology,
petroleum engineering and environmental engineering.
Gchiling@usc.eduGeorge Chilingar et al., J Earth Sci Clim Change 2017, 8:8 (Suppl)
DOI: 10.4172/2157-7617-C1-030