Vízrajzi Évkönyv 78., 1973 (Budapest, 1975)

Tartalomjegyzék

5. / Under the title "Yield curves of some characteristic springs" are presented the temporal variations of the yields of three karstic springs. As a supplement, precipitation data of the surroundings are also supplied.

6. / The changes in the karstic water table are illustrated by the time series of the results of measurements obtained partly in some boreholes, representing natural conditions and, partly among conditions influenced by mining activities. Monthly averages for the last 10 years have been given wherever it was possible. Together with the data of karstic water level, the precipitation data of the surroundings are reproduced.

IV. Hydrometeorological data.

1-3./ In these three chapters, the annual and seasonal distribution of precipitation as well as its distribution during the irrigation half-year are presented, expressed also in percentages of the 60-year average. These maps, as well as the further figures and data are actually supplementing the hydrometeorological characterization offered in Chapter B.l. While comparing actual values to the average ones, positive deviations are illustrated on the chart by a blue colouring, while negative deviations by an ochre one.

4. / Monthly and annual precipitation sums are grouped according to the watersheds outlined in Chapter A. 7. The table is listing 1./the geographical co-ordinates and altitudes above sea-level of the stations, 2./ the "normal values" /i. e., averages for 60 years/, 3./ the number of days with a precipitation amounts exceeding 1 mm, and 4. / the maximum of precipitation fallen within 24 hours. The names of daily reporting stations are underlined. Raingauge stations are listed in Chapter A. 1. alphabetically and at the end of the volume, they are plotted on the map of observing stations.

In sub-para 4/b is presented, for the sake of offering a better picture of the monhtly distribution of precipitations, a graphical display of monthly precipitation sums for some stations, and plotted, for the sake of comparison, also the normal values for the period 1901 to 1960.

5. / Into the pattern of temporal distribution of precipitations, graphs of daily precipitation sums are yielding an insight. Precipitations fallen in the form of snow are marked by x, while precipitation sums lower than 1 mm are marked by a point. Traces of precipitation are omitted.

6. / Under the tittle "Short-term heavy rainfallfe" precipitations a/ fallen in less than 4 hours listed in the order of their intensity, according to the catchment areas indicated in the scheme given in Chapter A. 7, b/ of more than 50 mm in 24 hours listed monthly in chronological order can be found. In the first group, the duration of precipitation is given in minutes.

7. / Snow conditions are described by tabulated daily values of the depth of snow cover. Patches of

a snow are marked by an encased asterisk. The number of days with a snow cover during the year in question has been compared to the monthly average values for the winters 1930/31 to 1943/44, 1946/47 to

1963/64 displaying in addition, the monthly average maximum and maximum snow depths.

In sub-paragraph b/, it is presented, for the sake of yielding a better picture on the time variations of snow condit ions, the majority of the daily snow depths also in a graphical form, together with the altitude data of the stations above sea level. Snow depths lower than 1 cm are designed by points.

8. / In this chapter, data on the water equivalent of the snow cover are published, summarized in the form of monthly tables. Data are originating from the observation network operated by the Research Institute for Water Resources Development. Values given are averages from 20 linear measurement /along a lenght of about 100 m, two measurements at each of 10 observation sites/. Together with these data, we are also presenting the average depth of the snow cover, the average value of the water equivalent and the average value of the bulk density for the days, on which such measurements were carried out.

9. / For the sake of enabling a quick review of the pattern of time variations of air temperature, there were plotted, for some stations, the five-days mean values of air temperature. For the sake of comparison, also the 60-year normals and extreme values of air temperature are shown.

10. / The figures published are displaying the monthly mean air temperature data and the heat sums. Data are also compared to the average and extreme values of the period 1901 to 1960. Annual and normal values of the heat sums are separately noted in the figure.

11. / The development of areal variations in air temperature is demonstrated on the isothermal map both for the whole year'and for the growing season. For the sake of comparison, also deviations from the 60-year normals are given. Positive deviations are coloured in ochre, negative ones in blue.

12. / The monthly sums of sunshine duration are presented on the figures, compared to normal values of the period 1901 to 1960 and to the extreme values observed up to now. The figures are containing also data on the astronomically possible maximum duration of sunshine. Annual sums of sunshine duration are indicated in the figures together with the 60-year average and the extreme values observed till now.

13. / On the maps of sunshine duration conditions the areal variations are presented, one for the whole year and the other for the growing season, exhibiting also the deviations from the 60-year normal values. A positive deviation is coloured in ochre and a negative one is coloured in blue.

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