DBPapers
DOI: 10.5593/SGEM2014/B42/S19.065

RECONSTRUCTION OF THE LAKE SHIRA LEVEL CHANGES IN THE LAST 1500 YEARS USING GEOCHEMICAL INDICATORS

N. Maksimova,A. Darin, I. Kalugin, T. Markovitch, Y. Rakshun, D. Sorokoletov, F. Darin
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-16-2 / ISSN 1314-2704, June 19-25, 2014, Book 4 ,Vol. 2, 495-500 pp

ABSTRACT
Meromictic Shira Lake is a good representative object for detail climate modeling due
to its local hydroclimatic information and annually laminated bottom sediments. For
geochemical research was used method of scanning microanalysis with synchrotron
radiation. We used a one dimensional scanner and a system for collimating and focusing
the beam that allowed us to perform measurements of more than 20 minor elements
with detection limits of 1–5 ppm in cores of bottom sediments with a spatial resolution
of 100 μm. The applied experimental apparatus allowed us to reach a new quality of
paleoclimatic reconstructions with annual time resolution.

Keywords: Shira Lake, bottom sediments, scanning microanalysis, synchrotron
radiation, lake level, recostruction.