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Environmental Monitoring and Assessment

, Volume 127, Issue 1–3, pp 383–388 | Cite as

Integral assessment of climate impact on the transboundary Mesta River flow formation in Bulgaria

  • Ivan K. Diadovski
  • Maya P. Atanassova
  • Ivan S. Ivanov
Original Article

Abstract

The present work considers the section of the Mesta River on Bulgarian territory using the integral method for evaluation of climate and anthropogenic impact on the river flow.

The level of this impact is determined by the index K i (flow module), the coefficient C i for the deviation of the average annual water volume Q i from the flow norm Q o and the index h i for the deviation of the average annual rainfall volume H i from the average multi-annual rainfall volume H o .

The dynamics of the average annual flow Q i at two typical hydrometric stations – Yakoruda and Khadzhidimovo, as well as the dynamics of the average annual rainfall for the Yakoruda station was examined for the period 1955–2003.

The data for the considered period 1955–2003 exhibit a decreasing trend of the average annual water volumes dynamics for both stations due to the impact of climate changes in the Mesta River catchment.

Keywords

River flow Climate Trends Catchment 

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Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  • Ivan K. Diadovski
    • 1
  • Maya P. Atanassova
    • 1
  • Ivan S. Ivanov
    • 2
  1. 1.Bulgarian Academy of ScienceCentral Laboratory of General EcologySofiaBulgaria
  2. 2.Bulgarian Academy of ScienceInstitute of Water ProblemsSofiaBulgaria

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