TRENDS IN LIQUID FLOW AND SEDIMENT DISCHARGE ON SF. GHEORGHE BRANCH DANUBE RIVER


FLOREA CRISTINA, BORCAN MIHAELA


ABSTRACT: Trends in liquid flow and sediment discharge on Sf. Gheorghe Branch. The purpose of this article is to identify some trends in the temporal variability of liquid medium flow and solid flow on Sf. Gheorghe branch.
The paper is based on exploiting the liquid medium flow series and the flow of suspended sedimentary discharges (monthly and annual) from three hydrometric stations located on the Sf. Gheorghe Branch. These stations operating periods are: 46 years (Ceatal Sf. Gheorghe station), 42 years (Murighiol station), 47 years (Sf. Gheorghe Port station), but, in order to obtain reliable and conclusive results, it was chosen as the common period of analysis 1971-2012.
In the analysis of temporal variability are used, especially statistical methods, among which the Mann Kendall test is required for identifying linear trends and its statistical meaning. The methods we have used point towards an increase tendency regarding the liquid discharges (both monthly and annually) and a decrease tendency of the solid discharges.


Keywords: liquid and solid flow, trend analysis, Mann - Kendall test.

 

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