Małgorzata Gutry-Korycka
Articles
Two Dimensional Modelling of the Flood Zones in the Vistula River Valley in Warsaw
Geographia Polonica (2009) vol. 82, iss. 1, pp. 79-88 | 
Full text
Abstract
When estimating the reach of the fl ood zones, a mathematical model that describesthe fl ood wave propagation, as well as the digital elevation models can be used. In this study,a two step approach has been applied. In the fi rst step, in order to fi nd the most relevantfl ooding areas, a one dimensional hydraulic model HEC-RAS has been used, which assumessteady state fl ow conditions and a discharge of Qp1% = 7210 m3/s and Q p 0.1%= 9960 m3/s.The segment of the Vistula Valley analysed is 47.05 km long. In the second step, a smallerarea has been analysed using the 2D hydraulic model of shallow water fl ow which is based onthe Roe scheme of fi nite volume method.
Keywords: Warsaw, Vistula River, fl ood zone maps, inundation modelling
, University of Warsaw, Hydrology Department, Krakowskie Przedmieście 30, 00-927 Warszawa, Poland
, Faculty of Geography and Regional Studies, University of Warsaw Krakowskie Przedmieście 30, 00-927 Warszawa, Poland
, Gdańsk University of Technology, Faculty of Civil and Environmental Engineering, Narutowicza 11/12, 80-952 Gdańsk, Poland
The hydrological regime of rivers in the light of scenarios of global climatic change
Geographia Polonica (1998) vol. 71, pp. 61-78 | Full text
Abstract
Will the hydrological regime of rivers be transformed as a result of global climatic :hange, assuming physico-geographical properties of catchments to be permanent? An answer to this question was sought by way of comparison of the behaviour patterns of a river (its discharge structure in the normal yearly cycle) in real conditions defined on the basis of an observation series from the years 1961-1990 (scenario 0), and in the conditions of the assumed climatic change (GFDL and GISS scenarios). The assessment of changes in the regine was made in quantitative and qualitative terms.The Rega, the Utrata and the Soła, three rivers, whose catchments lie in different physico-geographical regions of Poland were chosen for the analysis, in order to gain an insight iito the direction and intensity of changes at a regional scale also.The -esults obtained corroborate the impact of global climatic change on the rivers, both at the rmso-scale of Poland and the regional scale. The total annual discharge may change significantly, either by going up, according to the GISS scenario, or going down, according to the G?DL scenario. The transformation of the discharge rhythm may manifest itself in a shift ii the stages of discharge while seasonality is maintained, and in a change in its magnitude in particular seasons (e.g., the lowering of the level of base flows and their lengthering, mainly in mountain and lowland streams, as well as restricted and greatly reduced neltwater floods).
Keywords: hydrological regime of rivers, effect of global climatic change
, Faculty of Geography and Regional Studies, University of Warsaw Krakowskie Przedmieście 30, 00-927 Warszawa, Poland
, Institute of Physical Geography, Adam Mickiewicz University ul. Fredry 10, 60-701 Poznań, Poland
Miscellany
Geographia Polonica (1994) vol. 62, pp. 109-118 | Full text
, Faculty of Geography and Regional Studies, University of Warsaw Krakowskie Przedmieście 30, 00-927 Warszawa, Poland
[kkozuchowski1@wp.pl], Department of Environment Dynamics and Bioclimatology, University of Łódź, Lipowa 81, 90-568 Łódź, Poland
Articles
Generation of time series of the meteorological values in changing climatic conditions
Geographia Polonica (1994) vol. 62, pp. 23-47 | Full text
Abstract
The authors discuss the average air temperature and mean precipitation amounts in long-term and short — time variability. This research may be a starting point for combining GCM's models (GFDL and GISS) used to forecast spatial distribution of climatic changes in hydrological models on the territory of Poland.Methods of grid simulation using 90-year and 30-year sequences provide sufficient statistical material for a relatively precise estimation. Authors presented stochastic generation of meteorological data in others time step (daily, monthly and yearly) by Markov chain.
Keywords: scenarios of global climate change; GCM models application (GFDL, GISS); generation of meteorological data (air temperature, precipitation); Markov chains application
, Faculty of Geography and Regional Studies, University of Warsaw Krakowskie Przedmieście 30, 00-927 Warszawa, Poland
, Interdisciplinary Centre for Mathematical and Computational Modelling, Warsaw University Pawińskiego 5a, 02-106 Warsaw, Poland