Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: infiltration coefficient

Sortuj według:

Ogranicz wyniki do:

Evaluation of groundwater recharge in Poland using the infiltration coefficient method

Tarka R., Olichwer T., Staśko S.

Geological Quarterly

2017

Vol. 61, No. 2

384--395

Variable methods and results are reported on groundwater recharge in Poland. The evaluation of recharge on a small scale requires the use of a single method. In order to evaluate these outcomes and their distribution, the authors have decided to verify different approaches and select the infiltration coefficient by comparison. The article is an extension of the studies on groundwater recharge conducted by the authors. The main goal is to verify previously designed values of the infiltration coefficient based on groundwater runoff from additional river basins in Poland. Total groundwater recharge from precipitation in Poland was calculated at 34,118 km3 per year, which equals 109.3 mm of water column. The obtained value is close to the average multi-year value of the groundwater runoff. Recharge constituted 18.6% of average precipitation in Poland, which was calculated at 588.5 mm. The estimated groundwater recharge value was verified referring to groundwater runoff from 37 river basins with known discharge rates in the years 1976–2005. Differences in mean groundwater runoff for the entire area (37 river basins) obtained by the infiltration coefficient method and by the use of Wundt’s method amounts to only 0.7%. Despite the simplified calculation methods, the results obtained on a small scale are more accurate than other calculations, which are based on data pertaining to precipitation, soil type, land use, topography of the area, and depth to the groundwater.

Wstępna ocena składowych naturalnego bilansu wodnego na podstawie obserwacji w lizymetrach

Żurek A.

Przegląd Geologiczny

2010

Vol. 58, nr 12

1192-1197

The initial results of measurements in 4 lysimeter station are presented. The research station is localized in Cracow at AGH area. The measurements have been started in the end of November 2005. One of the lysimeter (A) is weighable, with automatic parameter storing on data logger. The rest of the lysimeters (I, II, III) are gravitation ones with standard seepage water collectors. The lysimeters have been filled with the consolidated medium sands from Bukowno sand pit (A, I), Bolesław (II) and Cholerzyn (III) ones. The infiltration coefficients for lysimeter soils have been assessed as the ratio of measured leaching and precipitation. The fluctuations of the lysimeter A weight against precipitation and infiltration have been allowed to draw some conclusions about the intensity of evaporation and seepage processes.