| DATE | 2018-05-16 08:17:30 |
| IDABSTRACT | 20180516081730-0214 |
| CONTACT | sanjamanojlovicgeo@gmail.com |
| PRESENTATION | ORAL |
| INVITED | 0 |
| IDSESSION | 4 |
| TITLE | WATER AND SEDIMENT DISCHARGE VARIABILITY FOR THE PERIOD 1961-2010
– CASE STUDY: NIŠAVA RIVER, EASTERN SERBIA |
| AUTHORS | S Manojlovic (1), S Dragicevic (1), M Langovic (1), R Tosic (1), P Manojlovic (1), I Novkovic (1) |
| AFFILIATIONS | - Faculty of Geography University of Belgrade, Belgrade, Serbia
|
| ABSTRACT | This study is concerned with identifying changes in the time series of
precipitation, suspended sediment concentration, water and sediment discharge in
the Nišava river basin for the period 1961-2010. Using the cumulative double mass-plot
diagram, three time series are detected for precipitation, suspended sediment
concentration, water and sediment discharge. Non parametric Mann–Kendall test is used
to detect trends. Also, sediment discharge was analyzed for correlation analysis between
extreme precipitation events and hydrological conditions. The results show significant
decresase for the period 1961-1981 and 1981-1994 and no-significant increase in period
1995-2010 for all datasets. Also, we identified type and changes in the hysteresis loop
and determined the relationship between the suspended sediment concentration and
discharge for the different time series. The results show a clear shift in the phase timing
for the maximum daily and monthly suspended sediment concentration from summer to
spring months as a result of changes in the trend of precipitation and water discharge. We
further investigate in a correlation manner how climate changes or extreme precipitation
and hydrological events may affect a shift in the phase timing for maximum sediment
discharge events. This work has potential significance for sediment management, stream
engineering and restoration. |
| PAGE | 92 |
| STATE | 1 |