Dynamika transportu fluwialnego górnej Parsêty jako odbicie funkcjonowania systemu zlewni

Dynamics of fluvial transport of the upper Parsêta River as a response of the catchment system

Andrzej Kostrzewski, Malgorzata Mazurek, Zbigniew Zwoliñski

10. Seasonality of fluvial transport

Fluvial transport is one of the basic processes, and its properties can be used as important indicators of the temperate morphoclimatic zone. The fluvial regime of the upper ParsÍta is clearly different in the winter and summer half-years. The seasonal variation in the leaching of the catchment substratum and in the supply of material to the river channel produces characteristic concentration and load patterns of the fluvial parameters under study. It has been possible to distinguish 4 seasonal hydrochemical and fluvial transport groups for the upper ParsÍta water (Figs. 10.1.1, 10.1.2, 10.2.1, Table 10.1.1, 10.2.1). On the basis of analysis of these groups 3 morphogenetic seasons were distinguished (Figs. 10.3.1, 10.3.2, Table 10.3.1):
  1. a season of reduced denudational activity, from May to September/October,
  2. a season of average denudational activity, during the whole year,
  3. a season of heightened denudational activity, connected with winter and early spring, especially from February to April.
Denudation processes are most active in winter and spring. This corresponds to the dynamics of water discharge and is related to weather types.

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