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Water and pollutant flows through the Mejdurechye Reservoir, Uzbekistan
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology (INK).
2008 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Karakalpakstan, Uzbekistan, has faced water scarcity and low water during several years as a consequence of Uzbekistan’s extensive irrigation of cotton fields. The environmental status of the Mejdurechye Reservoir, which is the largest in the lower Amudarya Delta, is therefore of great local importance. This thesis quantifies pollutant mass flows through the reservoir, concidering for instance salt, DDT and Lindane (HCH). Surface water flow paths through Mejdurechye Reservoir are also conceptualized in order to provide suggestions for future a possible monitoring program.

Results show that chloride concentrations have decreased during July 2007-2008 with at least 10% in spite of a large specific evaporation and a reservoir volume reduction of at least 60%. The most important implication of this is that pollutants in the reservoir cannot have been subject of evapoconcentration during this period. DDT and Lindane have on the other hand increased with up to 50000% in concentration and 20000% mass compared to measurements dating back to 2002. A rough age estimation of DDT shows that the DDT has been mobilized recently. The results of this thesis may prove valuable when forming environmental policy plans and setting up future monitoring programs.

Place, publisher, year, edition, pages
2008. , 41 p.
Keyword [en]
Central Asia, Uzbekistan, hydrology, Amudarya, Mejdurechye, water, water reservoir, pollutant
National Category
Geology
Identifiers
URN: urn:nbn:se:su:diva-36549OAI: oai:DiVA.org:su-36549DiVA: diva2:289678
Presentation
(English)
Uppsok
Life Earth Science
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Available from: 2010-01-26 Created: 2010-01-25 Last updated: 2010-11-23Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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