Summary
This diploma thesis is called Appearances of abnormal synoptic situations in time series measured at Halenkovice station during 2006–2010. The supervisor is Mgr. Jana Svobodová, Ph.D. The aim of this diploma thesis is study of appearances of abnormal synoptic situations in the values of selected characteristics of natural environment. Location of the studies is Department of Geoinformatics experimental place near the landslide in Halenkovice. In case that won't be possible to identify any abnormal synoptic situations the aim of this diploma thesis will be to find an extreme values in time series and to analyze their behavior. No abnormal synoptic situation was identified from the collected data collect from monitored location and that is why the diploma thesis is focused on analysis of extreme values in time series.
All data which are used in this diploma thesis were measured at experimental station Halenkovice in 2006-2010. For storing data were used Microsoft Office Access database. For analysis were used MS Office Excel 2003 and Project R version 2.13.0. Data were imported from Microsoft Office Access database into MS Office Excel. One of the important steps was editing imported data because of remove measurement errors. For analysis was necessary to calculate quarter hour, half hour and 24 hour rainfall amounts. It took advantage of automation using the scripts which was written in Visual Basic for Applications contained in MS Office Excel.
According to N. Slabá (1972) the rainfall intensity is defined as high (8.1–40 mm per hour) and very high (>40 mm per hour). These values were selected as extreme values. This intensity of rainfall appeared 11 times at the monitored location during 2006–2010. In these 11 cases were monitored dependences of ground water level, soil moisture and water flow from horizontal drill hole on rainfall, soil temperature in 10 cm and 60 cm depth on air temperature and air temperatures at 2 m on rainfall. In some events in which was visible delay of phenomenon the time series were moved back. For the extreme values were assigned synoptic situations. Dependence was evaluated using correlation analysis. Non-parametric Spearman’s correlation coefficient was used because the meteorological data have non-linear character.
During the period of extreme rainfall were in Czech Republic six types of synoptic situations. The most often are Through of low pressure over central Europe – B and Through advancing over central Europe – Bp (both 3 times). The second often situation is Southwesterly cyclonic situation – SWc2 (2 times). Once were Westerly cyclonic situation – Wc, Westerly anticyclonic situation (summer type) – Wal and Northwesterly cyclonic situation – NWc.
The second part of the diploma thesis was to compare manual and automatic rainfall measurements using the paired t-test. It was computed for 24 hour rainfall amounts in seven-day intervals. The result of the test was that manual and automatic rainfall measurements are not identical only in 3 seven-day periods.
Part of the diploma thesis is also description of the measuring devices.
