Wyniki wyszukiwania - BazTech

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Long-term variability of runoff from a small agricultural catchment of the North Masovian Lowland

Kolasińska Karolina, Kierasiński Bartosz, Karpińska Katarzyna, Szymczak Tomasz, Banasik Kazimierz

Journal of Water and Land Development

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2023

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no. 58

212--219

EN

Changes of land use, population and climate cause spatial and temporal changes in renewable water resources. For better understanding of the changes and effective management of water resources, hydrological investigations in river catchments are carried out around the world. A special investigation involves a study of hydrological processes in small site-specific catchments. The aim of the study is to analyse three characteristic river flows of a small lowland river on the basis of field surveys over two multiannual periods and to evaluate the applicability of indirect methods for determining characteristic flows in the catchment. Hydrological studies in the small agricultural catchment of the Mławka River, located in the Mławka Hills mesoregion, a part of the North Mazovian Lowland macro-region, have continued since 1966. The recorded data were used to determine daily flows and selected characteristic flows for multiannual periods of 1966-1990 and 1991-2020. To determine characteristic flows with indirect methods, three regional formulae and isorea methods were used. The study showed a decrease in renewable water resources over the period. In the multiannual periods, the average flow at the gauge station of Mławka River decreased by 15.6%. The outflow coefficient decreased from 0.303 to 0.265. The minimum annual flows also decreased by 29.1% and annual maximum flows showed an average increase by 19.7%. The use of indirect methods to determine the mean flow yielded results that converged with those from the second multiannual period.

2

Portable dam as a warehouse for retention and use of rainwater

Kolasińska Karolina

Polish Technical Review

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2022

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No. 3

15--17

EN

The portable dam is a monolithic device for storing and retaining rainwater. Ways of using portable weirs can be divided into categories depending on the length of the damming period. Short-term damming (several - several hours) may be useful in carrying out hydrological, hydraulic and biological measurements. In forest areas, pastures and meadows, it enables the damming of water necessary for the intake of water by the fire brigade while extinguishing the fire.

PL

Przenośna zapora to monolityczne urządzenie do przechowywania i retencjonowania wody deszczowej. Sposoby wykorzystania jazów przenośnych można podzielić na kategorie w zależności od długości okresu piętrzenia. Piętnienia krótkotrwałe (kilka-kilkanaście godzin) mogą być przydatne przy wykonywaniu pomiarów hydrologicznych, hydraulicznych i biologicznych. Na terenach leśnych, pastwiskach i łąkach umożliwia spiętrzenie wody niezbędnej do poboru wody przez straż pożarną podczas gaszenia pożaru.

3

A pilot study on improve the functioning of extensive green roofs in city centers using mosses

Burszta-Adamiak Ewa, Fudali Ewa, Łomotowski Janusz, Kolasińska Karolina

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska

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2019

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Vol. 28, No. 1

118--130

EN

Most of environmental benefits of green roofs results from the presence of a vegetation layer. However vascular plants quickly die in harsh urban conditions. This paper presents research involving moss species appearing spontaneously on green roofs in cities to test whether we can create a vegetation layer with simplified structure introducing that moss. It was checked using two transplant methods and three models of such roofs. Research evidenced that moss Ceratodon purpureus Hedw. is able to survive on green roofs in cities with high efficiency and can develop after transplant on roofs with a simple structure. Maximum weight of the moss layer during the year did not exceed 7.0 kg·m–2.