Modern Approaches to Constructing Maps of the Minimum Flow of the Mountain Rivers (the Case of the Tisza Rivers Basin within Ukraine)

摘要

Information on the water flow, which for the entire Tisza basin is formed in particular in the Ukrainian Carpathians, is important for the regions located in the middle and lower currents. During the period of climate change and intensification of droughts, the necessity of study of dangerous hydrological phenomena. The period of minimal runoff can also be attributed to dangerous hydrological phenomena. According to the normative documents [13], the basic calculation characteristics of the minimum flow of rivers are the 30-days minimum flow for the summer-autumn and winter periods. However, the river flood type of the Tisza river basin influences the determination of continuous periods of 30-days minimum flow. Taking into account other studies , it was proposed to use the value of 7-days minimum flow for mountain rivers. As a result of the calculations a set of thematic layers and multi-layered maps of the 7-day minimum flow was obtained.