Duration of the growth phase in cases of ice deposits of category SHP (spontaneous) in the territory of Ukraine in the months of the cold period of the year during 1991–2016

Abstract

The data on the duration of the growth phase of cases of ice storms of the category of SHР in the territory of Ukraine for certain periods of time during 1991–2016 in the month of the cold period of the year and the separate months of the transitional seasons are considered. It has been established that the duration of the growth phase varies from a few hours to several dozen and sometimes hundreds of hours in a row. It was found that, for the most part, slight duration of the growth phase of icing of the category of SHP is predominant. They are usually calculated several dozens of hours, but there are longer ones. The most prolonged were the growth phases in the cases of ice deposits in the category of SHP in the winter months. You can make a number of conclusions from the conducted research, such as: – The duration of the growth phase of ice-oily deposits in the category of SHP is within a fairly wide time range from several hours to tens or hundreds of hours, depending on the current conditions. – It has been established that for the most part, the duration of the growth phase of ice deposits is insignificant and lasts from several hours to several dozens of hours, regardless of the place where the sediment was formed. - Most often, longer phases of growth are observed in the months of the winter season, especially in January and December, as well as in November. This refers to the 1991–2000 and 2001–2010 periods. - The most prolonged phases of the accumulation of ice deposits of the CSF category, which exceeded 48 hours in a row, were observed during 1991-2000 in February 1995 at MS Play, November 1991 and 2000 in Lyubashivka, 1999 in Mariupol, November 2000, in Razdelna and Nova Ushytsia, December 1992 in Lyubashitsa, December 1997 in Pomechna, Kryvyi Rih and Loshkarovka. During 2001–2010, the longest phases of the increase in ice deposits of the CSF category were observed in January and December 2007 at MS Play, December 2007 in Debaltseve, 2008 in Ovruch, Vinnytsia. During 2011-2016, cases of ice deposition with such prolonged phases of an increase in ice of the SНР category were observed in Poltava in January 2013. – For cases where the duration of the growth phase of ice deposits was negligible, it would have a long duration of the preservation and destruction phase. Because due to the considerable duration of this phase, the danger of emergency situations in the ice-and-frost deposits depending on the sectors of the economy will increase.