Hidrológiai Közlöny 1949 (29. évfolyam)

1-2. szám - E. MOSONYI, D. Eng.: Natural storage effect in the mountainous drainage areras of the Carpathian Basin

that the ratio between average annual precipitation and minimum annual precipitation may be taken as constant for the whole of the examined district. According to the author's researches this ratio is: 1:56. The precipitation map of the Hungárián Meteorological Institute shows the isohyeta lines based on a 30 year period average precipitation. With this map and the above ratio, the precipitation of the driest year in any drainage area can be computed. Since the method suggested in this study gives thte possibility of determining the characteristic mass curve, the necessary storage capacity can be evaluated not only in case of Uniform but alsó in case of variable consumption. Namely, if the character of consumption is given, ordinate differences between the mass curves of run-off and consumption indicate stored water quantity in the reservoir. The maximum value of these ordinate differences is equal to the required storage capacity. If the temporal variation of consumption is mathematically explicable (through a continuous and differentiable function) the necessary storage capacity may be derived and in knowledge of factor 9 it can be siimply computed. Through simple theoretical examination it can be proved that, irrespectivte of reservoirs serving run-off equalization within a very short period only, for hydrological design of seasonal reservoirs it is the storage year decisive for annual reservoirs that must be taken into consideration. Accordingiy in theoretical proceedings we may use equation (1U) of the charactei'istic mass curve. Supposing a continual consumption of q — aq

k (22) where a means any value between 0 and 1, the necessary storage capacity is equal to (23) (23a) wherfe coefficient V" can be computed from te-quation a -)- <f — 1 or S—%<p*l>y ip .Tqtc Using substitution, 7? (24) (25) formula (23) can be written in form: S=

fiTqi

e = (

tV (26) where V means, as before, the totál annual run-off. The author's other hydrological examinations enable us to get an idea only about run-off conditions in the dry year but alsó about the relation between multi-amnml periods of arid and rainy character, At the same time these investigations are offering the possibility of computing necessary capacity of reservoirs for multi-Onnual equalization. Although the author is introducing the natural storage coefficient <p in connection with hydrological design of reservoirs, nevertheless he is of the opinion that this coefficient may be applied gener. ally for characterising inner storage effect of different drainage areas situated in identical climate zones. Folyóiratok rövidítése: Agrártudományi Szemle A. Sz. Általános Mérnök. Ál M. Anyag ..: ... Any. Bányászati és Kolhászati Lap:-,\ B. Kh. L. Elektrotechnika Et. Elet és Tudomány É. T. Földrajzii Közlemények Fr. K. Földtana Értesítő F. Ért. Földtani Közlöny F. K. Halászat H. Hő-, Víz-, Gáz-, Lég-Technika HVGL. Th. Időjárás Ij. Külföldi Technika Szemléje Kf. Th. Sz. Magyar Állatorvosok Lapja M. Á- L. Magyar Állattenyésztés M. At. Magyar Energiagazdaság M. E. Magyar Hajózás M. Hj. Magyar Kémikusok Lapja M. Kk. L. Magyar Közlekedés, Mt'ly- és Víz 'pílés xM. K. M. V.. Magyar Mezőgazdaság M. Mg. Magyar Technika M. Th. Mezőgazdaság és Ipar Mg. Ip. Műegyetemi Közlemények Mgy. K. Müszaiki Lapszemle Mű. Lsz. Népegészségügy Na Orvosok Lapja O. L. Természet és Technika T. Th. Természettudomány Tt. Városi Szemle Vr. Sz. "Vízügyi Közlemények V. K. 1