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Recent sedimentation processes in the Northern Aral Sea

  • V. A. Zhamoida
  • V. P. Butylin
  • E. A. Popova
  • N. V. Aladin
Article

Abstract

A survey of recent bottom sediments in the Northern Aral Sea was undertaken to elucidate the main direction of the alteration of sedimentation processes as a result of the significant decrease in the level of the sea from the beginning of the 1960s. Investigations were carried out in August–September 1991 from on board helicopter MI-8 MTV-1 which was equipped with the navigation system “LORAN-OMEGA”. Sediments were sampled by means of gravity coring and grab sampling. The frequency of sampling was about 1 station per 10 km2. At several sites, water samples were collected. Grain-size analysis was undertaken and the mineralogy of the sediments was determined by optical means, using an SEM energy dispersive X-ray microanalysis, and X-ray diffractometry using a DRON-2.0 diffractometer.

Key words

Aral Sea saline salt lakes sedimentation 

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Copyright information

© Kluwer Academic Publishers 1997

Authors and Affiliations

  • V. A. Zhamoida
    • 1
  • V. P. Butylin
    • 1
  • E. A. Popova
    • 1
  • N. V. Aladin
    • 2
  1. 1.All-Russia Geological Research Institute (VSEGEI)St. PetersburgRussia
  2. 2.Zoological InstituteRussian Academy of Sciences Universitetskaya nab.St. Petersburg

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