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Analiza wahań zwierciadła płytkich wód podziemnych na obszarze sandru Brdy

Jaworska-Szulc B., Pruszkowska-Caceres M., Szymkiewicz A., Gumuła-Kawęcka A., Gorczewska-Langner W.

Przegląd Geologiczny

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2017

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Vol. 65, nr 11/1

1069--1074

EN

In the Brda River outwash plain - the largest and the most typical landform of this kind in Poland (Galon, 1972) - there are 10 observation wells of the monitoring network of the Polish Geological Institute - National Research Institute. Analysis ofgroundwater level observations for the period of 2003-2016, obtained from the monitoring network, show a long-term trend of water table lowering. In most cases the groundwater table has been below the monthly average water level since 2006. In order to correlate the water table and weather data from the meteorological station in Chojnice, numerical simulations were performed using HYDRUS1D (Šimůnek et al. 2016) - vadose zone software package, based on the Richards equation. A one-dimensional model of the vadose zone was developed to simulate groundwater recharge, applying different bottom boundary conditions (Constant Pressure Head or Free Drainage) considering bare soil evaporation or root water uptake of the grass cover.

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Simple description of groundwater recharge through the vadose zone

Książyński K. W.

Czasopismo Techniczne. Środowisko

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2016

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Y. 113, iss. 1-Ś

55--71

EN

The paper presents the calculation rules for infiltration into the saturated zone using a simplified piston model. It has been indicated that recharge is the same as during free infiltration for unsaturated infiltration and that a new system of boundary conditions has been proposed for saturated infiltration and redistribution of moisture. The volumes of infiltration calculated for those cases have also been compared with the results obtained in a simulation based on the conductivity equation, showing convergence.

PL

W artykule przedstawiono zasady obliczeń infiltracji do strefy pełnego nasycenia z użyciem uproszczonego modelu tłokowego. Wskazano na niezmienność zasilania w stosunku do infiltracji swobodnej przy nienasyconym charakterze infiltracji i zaproponowano nowy układ warunków brzegowych przy charakterze nasyconym i przy redystrybucji wilgoci. Porównano również wielkości infiltracji wyliczone dla tych przypadków z wynikami uzyskiwanymi z symulacji opartej na równaniu przewodnictwa, wykazując zbieżność.

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Ocena zasilania wód podziemnych na Pojezierzu Kaszubskim z zastosowaniem różnych metod i różnej skali opracowania

Jaworska-Szulc B.

Przegląd Geologiczny

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2015

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Vol. 63, nr 10/1

762--768

EN

Groundwater recharge calculations were made during the study of Gdańsk aquifer system resources and detailed research of it’s recharge area, in the central part of the Kashubian Lake District. Recharge was determined using several methods: the climatic method, water table fluctuation (WTF), local and regional model calculation, infiltration rate method, and base flow analysis. There were analyzed both: the amount of measured and corrected precipitation.

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Wyznaczanie zasilania infiltracyjnego za pomocą zmodyfikowanego równania przepływu

Stachurski Marcin

Geologos

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2006

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Vol. 10

227--240

EN

Proper management of groundwater systems requires reliable assessment of its resources, particularly specification of spatial distribution and rates of recharge. Estimation of groundwater recharge based on measured water-table shape may be classified as an example of the “inverse problem”. Using “noisy” data, what is the typical case where measurement are discussed, leads to numerical instability and unreliable estimation of recharge. In this article the special modification to the flow equation is presented and verified in this article.