INVESTIGATION OF STATISTICAL CHARACTERISTICS OF DISTRIBUTION OF SNOW COVER FOR THE BLACK SEA COAST
Journal Title: Вісник Одеського національного університету. Географічні та геологічні науки - Year 2017, Vol 22, Issue 1
Abstract
Problem Statement and Purpose. Snow influences on society and the economy in many parts of the world. The difficulties associated with snow is accepted as an immutable factor in human environment and the impact of snow on the farm or huge value of snow as a natural resource is given little attention. Aim of the study is to determine the features of the distribution of snow over the Ukrainian Black Sea area in the 1996-2007 period. In order to achieve this goal solving of issues such as determining the average snow depth for the stations in question; calculating the statistical characteristics of the snow cover (mean, mean square deviation, asymmetry and excess coefficients); defining the spatial distribution of statistical parameters of snow cover with the construction of cartograms; providing integrated distribution of the average height of snow cover, is carried out. Data & Methods. Processing and analysis of random variables is carried out using special methods of mathematical statistics. In studies data of daily observation of snow cover in weather stations Kherson, Mykolaiv and Odessa regions are used for the period from 1996 to 2007. Results. The average snow depth varies from 3.96 to 11.57 cm. Mean square deviation ranges from 2.95-9.02 cm. The spatial distribution of these statistical parameters is Quasi-meridian configuration. Asymmetry coefficient has positive values at all stations area in question, indicating the right-asymmetry. Therefore, it is possible to conclude that the modal average snow depths, that is, most likely ones, is always lower than their averages. Excess factor in the stations in question is positive. This indicates that the curve of distribution of average height of snow cover has an elongated shape. Thus, the height of the snow cover is relatively little variation arithmetic average. The integral distribution of snow cover indicates that the maximum number of times the average height of snow falls on a ranking from 0 to 5 cm; Average snow depth at almost all stations in more than 90% of cases occur in 0-20 cm graduation.
Authors and Affiliations
L. V. Nedostrelova
Keywords
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