Start Submission Become a Reviewer

Reading: Comparative Systematic Analysis of Milankovitch Cycles to Identify Variations of Glaciers an...

Download

A- A+
Alt. Display

Research

Comparative Systematic Analysis of Milankovitch Cycles to Identify Variations of Glaciers and Interglacial Periods of Late Pleistocene in South Asia

Authors:

Aravinda Ravibhanu ,

South Asian Astrobiology & Earth Sciences Research Unit: Eco Astronomy Sri Lanka, LK
About Aravinda
Department of Research & Innovation
X close

Jinadasa Katupotha,

University of Sri Jayewardenepura, LK
About Jinadasa
Department of Geography
X close

Majda Aouititen

Beijing Forestry University School of Ecology and Nature Conservation, Beijing, CN
X close

Abstract

Variations in the first Euler angle known as Earth precession phenomenon which is described as a change in the Earth’s orbit; found to have strong impact on the climate of Earth. These observations of climate changes were connected with the behavior of the global ice sheets, including their advancing and retreating movements which have been recorded. In fact, Earth’s climate depends essentially on the cycle of glaciers' growth and reduction. The alternative glacial periods and the interglacial periods coincide with the variations in Earth’s orbit known as “Milankovitch cycles”, which affect the insolation, and the sunlight exposure of different regions of the world and thus ultimately the behavior of ice formation. This paper aims to document the variations of the Earth’s axis orientation and to discuss how these changes have affected to the sea-level fluctuation of the South Asian Region during late Pleistocene. Experiment methodology consists of compelling a standardized dataset of the sea-level index (Data SET 01-Radiocarbon Journal, Katupotha. J, Data SET 02- SEAMIS database and selected 35 number of carbon dating values recorded and published in the literature of the South Asian Region) and then compare it with the data of Milankovitch Cycles. The discussed results show that the sea-level variations occurred mainly between 12,500 ± 1,500 YBP to 11,000± 1,500 YBP, indicating that 25m ± 5m recorded to be the lower sea level documented than the current sea level found around the South Asian region. This has been resulted by a quick glacier transition that happened in the Late Pleistocene.

How to Cite: Ravibhanu, A., Katupotha, J., & Aouititen, M. (2020). Comparative Systematic Analysis of Milankovitch Cycles to Identify Variations of Glaciers and Interglacial Periods of Late Pleistocene in South Asia. TRIVALENT ත්‍රිසංයුජ: Journal of Archaeology, Tourism & Anthropology, 1(1), 1–12. DOI: http://doi.org/10.4038/tjata.v1i1.24
Published on 01 Dec 2020.
Peer Reviewed

Downloads

  • PDF (EN)

    comments powered by Disqus