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Tytuł:
Characteristics of daily water temperature fluctuations in lake Kierskie (West Poland)
Autorzy:
Ptak, Mariusz
Sojka, Mariusz
Nowak, Bogumił
Powiązania:
https://bibliotekanauki.pl/articles/1051197.pdf
Data publikacji:
2019-09-30
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
lake
water temperature
air temperature
wind speed
Poznań
Opis:
The paper presents the dynamics of daily water temperature fluctuations in Lake Kierskie (West Poland) and determines the effect of air temperatures and wind speed on the variability of the parameter (water temperature). The analysis was based on hourly water temperature values from the period from May 2012 to January 2018. The data analysis permitted the description of the thermal regime of waters in the lake in the hourly cycle in reference to each month, and designation of months characterised by the highest and lowest stability of water temperatures. More than half of the analysed days was characterised by a change in water temperature not exceeding 1°C. The course of water temperature showed strongly positive correlations with air temperature, and weak correlations with wind speed. Water temperatures in the lake were correlated the strongest with air temperatures with a 24 h time step.
Źródło:
Quaestiones Geographicae; 2019, 38, 3; 41-49
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stream water temperature: a short review with special reference to diurnal dynamics
Autorzy:
Łaszewski, Maksym
Powiązania:
https://bibliotekanauki.pl/articles/2035823.pdf
Data publikacji:
2013-04-10
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
Stream water temperature
Heat exchange processes
Diurnal dynamics
Data loggers
Świder river
Opis:
Dynamic changes in stream water temperature are caused by thermal energy exchange at the interface between the water and the atmosphere, and between the water and the streambed. This heat flux is the result of physical processes which are stimulated by external drivers that control water temperature both in temporal and spatial scales. For streams, the most characteristic are diurnal fluctuations of temperature. For the purposes of this paper, electronic data loggers were used which allowed a presentation of the diurnal cycles of water temperature in a small lowland river. The measurements confirmed that meteorological conditions have a significant impact on the diurnal dynamics of stream temperature.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2013, 17, 1; 34-41
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of atmospheric circulation on water temperature along the Southern Baltic Sea coast
Autorzy:
Girjatowicz, J.P.
Swiatek, M.
Powiązania:
https://bibliotekanauki.pl/articles/48210.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
atmospheric circulation
water temperature
surface temperature
thermal property
air mass
correlation
Baltic Sea
coastal zone
Źródło:
Oceanologia; 2019, 61, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Annual course of superficial water temperature in the Ezcurra Inlet, King George Island, Antarctica
Autorzy:
Gurgul, Henryk
Stochmal, Wiesław
Szymczak, Wiesław
Powiązania:
https://bibliotekanauki.pl/articles/2052577.pdf
Data publikacji:
1996
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Antarctica
South Shetland Islands
sea water temperature
Źródło:
Polish Polar Research; 1996, 17, 1-2; 43-59
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of measured and modelled water temperature for the southern Baltic Sea during 1998-2001
Autorzy:
Piliczewski, B.
Powiązania:
https://bibliotekanauki.pl/articles/972881.pdf
Data publikacji:
2001
Wydawca:
Instytut Morski w Gdańsku
Tematy:
HIROMB
water temperature
Opis:
The article presents results of verification of water temperature forecasts from HIROMB model, which were compared with every-day measurements from some selected JMGW coastal hydrological stations during 1998-2001. In addition to that the model results were also confronted with CTD measurements from the Gdańsk Deep.
Źródło:
Biuletyn Instytutu Morskiego w Gdańsku; 2001, 28, 2; 89-95
1230-7424
2450-5536
Pojawia się w:
Biuletyn Instytutu Morskiego w Gdańsku
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of measured and modelled water temperature for the southern Baltic Sea during 1998-2001
Autorzy:
Piliczewski, B.
Powiązania:
https://bibliotekanauki.pl/articles/1920638.pdf
Data publikacji:
2001
Wydawca:
Instytut Morski w Gdańsku
Tematy:
HIROMB
water temperature
Opis:
The article presents results of verification of water temperature forecasts from HIROMB model, which were compared with every-day measurements from some selected JMGW coastal hydrological stations during 1998-2001. In addition to that the model results were also confronted with CTD measurements from the Gdańsk Deep.
Źródło:
Biuletyn Instytutu Morskiego w Gdańsku; 2001, 28, 2; 89-95
1230-7424
2450-5536
Pojawia się w:
Biuletyn Instytutu Morskiego w Gdańsku
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of water temperature fluctuations in Lake Jamno
Charakterystyka i zmiany temperatury wody jeziora Jamno
Autorzy:
Ptak, M.
Sojka, M.
Choinski, A.
Powiązania:
https://bibliotekanauki.pl/articles/84984.pdf
Data publikacji:
2018
Wydawca:
Akademia Pomorska w Słupsku
Opis:
The paper presents the analysis of thermal conditions of coastal Lake Jamno. The long observation series (1971-2013) for the course of surface water temperature suggests its considerable warming (0.28°C∙dec-1). In the monthly cycle, an increase in surface water temperature is observed in all cases except for the winter period (December, January, February). Water was heated the fastest in April (0.58°C∙dec-1) as well as May and September (0.46°C∙dec-1). Mean annual air temperature increased at a similar rate (0.27°C∙dec-1), but the coefficient of correlation of both media equalled 0.40. This suggests that other factors could contribute to the change in surface water temperature. One of such factors could be marine water intrusions. The strongest positive correlations of water temperature in Jamno and water level in the Baltic Sea occurred in the cold half-year, and negative in the warm half-year. From 2013, on the canal connecting Lake Jamno with the Baltic Sea, a storm gate was constructed that altered many processes and phenomena occurring in the lake so far. The paper covers the natural (quasi-natural) period of functioning of the lake, and provides a point of reference for future research on its thermal regime considering among others the effect of human pressure in the form of hydrotechnical infrastructure.
W pracy dokonano analizy warunków termicznych przymorskiego jeziora Jamno. Długoterminowy (1971-2013) przebieg temperatury wody wskazuje, że podlegała ona znacznemu ociepleniu (0,28°C∙dek-1). W układzie miesięcznym wzrost temperatury wody notowany jest we wszystkich przypadkach poza okresem zimy (grudzień, styczeń, luty). Najszybciej woda ogrzewała się w kwietniu (0,58°C∙dek-1) oraz maju i wrześniu (0,46°C∙dek-1). W podobnym tempie ogrzewała się średnia roczna temperatura powietrza (0,27°C∙dek-1), lecz współczynnik korelacji obu ośrodków wynosił 0,40, co sugeruje, że inne czynniki mogły wpływać na rozkład temperatury wody. Temperatura wody w Jamnie oraz poziom wody w Bałtyku najsilniejsze pozytywne związki przybierały w półroczu zimowym oraz ujemne w półroczu ciepłym. Od roku 2013 na kanale łączącym jezioro Jamno z Morzem Bałtyckim zostały uruchomione wrota przeciwsztormowe, które zmieniły wiele dotychczasowych procesów i zjawisk odbywających się w tym akwenie. Praca obejmuje swym zakresem naturalny (quasi-naturalny) okres funkcjonowania tego jeziora i stanowi punkt odniesienia dla przyszłych badań nad jego termiką uwzględniającą m.in. wpływ antropopresji w postaci zabudowy hydrotechnicznej.
Źródło:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2018, 22
1643-0115
Pojawia się w:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of cooling water temperature on the performance of a BWR nuclear power plant
Autorzy:
Laskowski, Rafał
Theimech, Mohamad
Uzunow, Nikołaj
Powiązania:
https://bibliotekanauki.pl/articles/2195750.pdf
Data publikacji:
2021
Wydawca:
Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
Tematy:
nuclear power plant
cooling system
cooling water temperature
boiling water reactor
BWR
elektrownia jądrowa
układ chłodzenia
temperatura wody chłodzącej
reaktor wrzący
Opis:
Although PWR reactors make up the large majority of the world's nuclear power plants, BWR reactors also have a share in this industry. It is difficult to find data on the performance of a BWR power plant in off-design and variable load conditions in the literature. Therefore, the paper presents how cooling water temperature affects the efficiency and power output of a BWR unit. The qualitative effect of changes and the trend related to the effect of cooling water temperature on the performance of the power plant are known, but the quantitative effect has to be determined for specific power units. Depending on the location of the nuclear power plant, various temperatures of cooling water for use in condensers and thus various operating conditions of the cooling system can be achieved. To analyze how cooling water temperature affects the performance of the power unit, a model of a BWR power plant was developed using the Ebsilon software. The model was based on data provided in [1] concerning LaSalle County Nuclear Generating Station. Calculations showed that within the examined range of cooling water temperatures at the condenser inlet between 10 and 28oC the gross power output of the unit decreases by 91.405 MW and the gross efficiency drops by 2.773 percentage points.
Źródło:
Modern Engineering; 2021, 3; 5--13
2450-5501
Pojawia się w:
Modern Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changes of the water temperature in Polish seaside resorts
Zmiany temperatury wody w polskich miejscowościach nadmorskich
Autorzy:
Swiatek, M.
Powiązania:
https://bibliotekanauki.pl/articles/84801.pdf
Data publikacji:
2016
Wydawca:
Akademia Pomorska w Słupsku
Tematy:
temperature change
sea water
water temperature
air temperature
Baltic coast
Polska
seaside resort
Opis:
Subject of the study are changes of the water temperature occurring on the Polish Baltic coast during years 1951-2010 (in Kołobrzeg, due to deficiencies in the data, for the years 1957-2010). It is expressed in the form of a linear trend. The study was based on the monthly average temperature of the sea water in the following stations: Świnoujście, Międzyzdroje, Kołobrzeg, Władysławowo, Hel and Gdynia. For most of analyzed stations an increase in average annual temperature of the water were observed. The largest one was recorded in Gdynia. In Świnoujście there were no significant changes in water temperature except for the slight its drop in June. A significant increase in the water temperature occurred in Międzyzdroje in February, March, April and May; in Kołobrzeg in January and March; in Władysławowo in January, February, March, April and June and in Hel and Gdynia in February, March, April, May, July and August. The greatest changes were in April in Hel and Gdynia.
Przedmiot badań stanowią zmiany temperatury wody zachodzące na polskim wybrzeżu Bałtyku w latach 1951-2010 (w Kołobrzegu ze względu na braki w danych w latach 1957-2010), wyrażone w formie trendu liniowego. W pracy wykorzystano średnie miesięczne wartości temperatury wody w następujących miejscowościach: Świnoujście, Międzyzdroje, Kołobrzeg, Władysławowo, Hel oraz Gdynia. W większości analizowanych stacji (oprócz Świnoujścia i Kołobrzegu) nastąpił wzrost średniej rocznej temperatury wody. Największy odnotowano w Gdyni, gdzie temperatura wody wzrastała średnio o około 0,02°C rocznie. Istotny statystycznie wzrost temperatury wody nastąpił w Międzyzdrojach w lutym, marcu, kwietniu i maju, w Kołobrzegu w styczniu i marcu, we Władysławowie w styczniu, lutym, marcu, kwietniu i w czerwcu, a w Helu i Gdyni w lutym, marcu, kwietniu, maju, lipcu i sierpniu. Największe zmiany następowały w kwietniu (w Helu i Gdyni powyżej 0,03°C rocznie). W Świnoujściu nie wystąpiły istotne zmiany temperatury wody z wyjątkiem niewielkiego jej spadku w czerwcu.
Źródło:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2016, 20
1643-0115
Pojawia się w:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relationships between water temperature, nutrients and dissolved oxygen in the Northern Gulf of Aqaba, Red Sea
Autorzy:
Manasrah, R.
Raheed, M.
Badran, M.I.
Powiązania:
https://bibliotekanauki.pl/articles/49092.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
stratification
nutrient
Aqaba Gulf
temperature
sea water
Red Sea
oxygen
Opis:
Five years (1998, 2000–2003) of summer records of temperature, nutrients and dissolved oxygen concentrations in the upper 400 m of the water column of the northern Gulf of Aqaba were employed to produce a simple statistical model of the relationship between temperature versus nitrate, phosphate, silicate andd issolved oxygen concentrations. Temperature profiles in the upper 400 m during summer revealeda clear thermocline in the upper 200 m. This was reflected in nutrient ando xygen concentrations as nitrate, phosphate, and silicate increasedfr om the surface to deep water while dissolved oxygen decreased. The best fit relationship between temperature versus nitrate andphosphate was inverse linear and the best fit correlation between temperature versus silicate andd issolvedo xygen was fractional. The observedn utrient concentrations were shaped by a combination of the hydrodynamics and biological factors. Deep winter mixing and high nutrient concentrations dominate during winter. Shortly after the water stratifies in spring, the nutrients are drawn down by phytoplankton during the spring bloom and remain low throughout the rest of the year. The regression equations presented here will be useful in estimating nutrient concentrations from temperature records as long as the annual natural cycle is the main driver of nutrient concentrations and external inputs are insignificant. Deviations from these relationships in the future could provide insight into modifications in the nutrient concentrations probably resulting from new nutrient sources, such as anthropogenic inputs.
Źródło:
Oceanologia; 2006, 48, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measured and predicted values of water temperature and salinity with special focus on the surface layer
Autorzy:
Kamińska, M.
Powiązania:
https://bibliotekanauki.pl/articles/1920509.pdf
Data publikacji:
1999
Wydawca:
Instytut Morski w Gdańsku
Tematy:
salinity
POLRODEX
water temperature
Opis:
The Baltic is a stratified sea. The upper layer is under the influence of atmospheric and terrestial factors. The mechanisms of these external factors on the surficial and subsurface water layer are well recognised but the vertical exchange in the water body is still not sufficiently investigated. Field measurements at sea are time consuming and expensive. A model of the Baltic Sea distributed to and accessible by institutions investigating the Baltic Sea is advantageous because of easier exchange modelled data. The modelling, especially of the surface layer is important due to the fact that outside the coastal zone continuous measurements of physical parameters is difficult. The comparison between measured in situ and modelled data serves as a tool for the corrections to HIROMB resulting in better approximation of real phenomena occurring in the Baltic Sea. Temperature and salinity values obtained on board rlv Baltica during the POLRODEX'97 expetriment were compared with modelled values. The analysis showed significant differences between in situ measurements and obtained from the HIROMB model.
Źródło:
Biuletyn Instytutu Morskiego w Gdańsku; 1999, 26, 1; 97-111
1230-7424
2450-5536
Pojawia się w:
Biuletyn Instytutu Morskiego w Gdańsku
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ temperatury wody zasilającej na eksploatację okrętowych kotłów pomocniczych
Feed Water Temperature Influence on Ships Auxiliary Boilers Operation
Autorzy:
Behrendt, C.
Powiązania:
https://bibliotekanauki.pl/articles/360739.pdf
Data publikacji:
2005
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
zanieczyszczenia gazowe i temperatura wody
korozja
wydajność parowa kotłów
badania symulacyjne
OMiUO 2005
gaseous contamination and feed water temperature
corrosion
boiler steam capacity
simulation research
Opis:
W artykule przedstawiono wpływ zanieczyszczeń wody tlenem i dwutlenkiem węgla na procesy korozyjne pomocniczych kotłów okrętowych. Przeanalizowano wpływ temperatury wody zasilającej na proces jej odgazowania i wzrost wydajności parowej kotłów. Zaproponowano system utrzymania stałej, zadanej wartości temperatury w zbiorniku wody zasilającej.
The paper demonstrates the influence of oxygen and carbon dioxide on corrosion processes in ship's auxiliary boilers. The influence of feed water temperature on degassing and on increase of boilers steam output were analysed. A constant feed water temperature system was proposed.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2005, 5 (77); 17-25
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmiany temperatury wody na Prądzie Zachodniogrenlandzkim w okresie 1982-2003
Changes in water temperature of the West Greenland Current over the period 1982-2002
Autorzy:
Zblewski, S.
Powiązania:
https://bibliotekanauki.pl/articles/260828.pdf
Data publikacji:
2004
Wydawca:
Stowarzyszenie Klimatologów Polskich
Tematy:
temperatury wody
Grenlandia
water temperature
Greenland
Opis:
This work deals with the changes in sea surface temperature (SST) in selected grids located along the West Greenland Current (Fig. 1). The West Greenland Current is a warm current, which transports warm waters to the bay/ gulf of the Baffin Sea and in this way has a great influence on the formation of ice cover and on air temperature in this area. The Reynolds's data set, version SST OI v.1., covering values of mean monthly SST in grids 1ox1o has been used as the data source. Yearly temperatures for selected grids have been calculated on the basis of mean monthly temperatures. The Reynolds's data set covers whole years from the period 1982-2002 (21years). This period is especially interesting because during these years (and also at present) an advanced process of sea ice cover degradation and an increase in air temperature has been observed in Arctic. At Greenland, especially during the past few years, an advanced process of ice melting on land was noted - summer ablation reaches the level of 1600-2000m. That is why changes in SST at the same time may also be interesting. Trends in chronological series of mean yearly values of SST in grids located along the West Greenland Current ([59°N, 44°W], [62°N, 52°W], [66°N, 56°W], [70°N, 58°W], [74°N, 60°W] and [76°N, 72°W] ) have been analysed. Such an analysis indicated that in all grids of the West Greenland Current the trends in water temperature prove to be positive and that these trends are statistically relevant (p < 0.05 ) in nearly all grids. An exception to this pattern is the sea area extending around the Cape Farewell (grid [59, 44] - the first part of the West Greenland Current} where the trends are very low and statistically not relevant (Tab. 1). The highest values of trends can be observed in grids [62, 52] (+0.059deg./year) and [74, 60] (+0.051deg./year) resulting in the increase in SST by 1.24°C and 1.07°C over the period of 21 years. These grids are located in the initial and final parts of the West Greenland Current. Far weaker trends were observed in central part of the current [70, 58] - +0.030deg./year and in grid [76, 72] - +0.035 deg/year. Yearly temperatures of water in the West Greenland Current prove to show strong correlation (see Fig. 2). The mean monthly values of SST have also been analysed. The highest values of trends (statistically relevant) were noted in grid [74, 60] in August (+0.193deg/year) and in September (+0.136deg/year) thus giving in the analysed period the increase in SST by 4.05°C and 2.86°C. Such distribution of trends in time indicates that the role of the summer warming of the sea surface has increased. Positive trends in spring and autumn months in grids [62, 52] and [66, 56] are statistically relevant. In grid [70, 58] positive trends are observed both in summer months as well as in winter ones and in the northernmost located grids positive and statistically relevant trends are observed in almost all months during which waters are ice free. Yearly values of SST in the south part of the West Greenland Current prove to show strong negative correlation with the Hurrell NAO index (r~ -0.7; see Fig. 4) the monthly values of SST show delayed correlation with the Hurrell NAO index; correlations which are statistically relevant were noted in the period from June to December, the maximum (r = -0.64 to ?0.74) in the period from August to October. Monthly and yearly values of SST which show statistically relevant correlation with the Hurrell NAO index disappear at latitude 67°N-68°N. In the analysed period the NAO index indicates weak negative trend which is not relevant (-0.052/year), however correlation of yearly SST with NAO index over the analysed period are statistically relevant, e.g. in grid 66°N, 056°W, they explain 45% of the observed changeability in SST (R = 0.69, F(1.19) = 17.6, p< 0.0005).
Źródło:
Problemy Klimatologii Polarnej; 2004, 14; 29-37
1234-0715
Pojawia się w:
Problemy Klimatologii Polarnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmiany temperatury wody w Prośnie w latach 1965-2014
Changes in water temperature in Prosna river in 1965–2014
Autorzy:
Ptak, M.
Nowak, B.
Powiązania:
https://bibliotekanauki.pl/articles/337858.pdf
Data publikacji:
2017
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
Prosna
rzeka
temperatura wody
zjawiska lodowe
zmiany klimatu
climate change
ice phenomena
Prosna River
rivers
water temperature
Opis:
Celem pracy jest analiza zmian warunków termicznych rzeki Prosny w środkowej Polsce (profil Bogusław) w ciągu ostatnich 50 lat (1965–2014). Na podstawie codziennych pomiarów temperatury prowadzonych przez Instytut Meteorologii i Gospodarki Wodnej – Państwowy Instytut Badawczy stwierdzono, że średnia roczna temperatura wody rzeki Prosny uległa znacznemu ociepleniu, średnio 0,27°C∙dek–1. W układzie miesięcznym najwyższy wzrost odnotowano w kwietniu – 0,46°C∙dek–1. Zmiany temperatury wody były silnie uzależnione od transformacji warunków klimatycznych. Wzrost średniej rocznej temperatury powietrza w tym samym wieloleciu mierzonej na stacji Kalisz (ok. 20 km od profilu badawczego) wyniósł 0,3°C∙dek–1. Tak wyraźne zmiany reżimu termicznego Prosny mają i będą miały wpływ na funkcjonowanie całego ekosystemu. Jest to dobrze widoczne, m.in. w występowaniu zjawisk lodowych, których czas trwania uległ skróceniu o 5,6 dni•dek–1.
The objective of the paper is the analysis of changes in the thermal conditions of the Prosna River in central Poland (station Bogusław) over the last 50 years (1965–2014). Based on daily temperature measurements performed by the Institute of Meteorology and Water Management – National Research Institute, it was determined that the mean annual water temperature in the analysed river considerably increased by an average of 0.27°C∙decade–1. In monthly distribution, the highest increase was recorded in April. It amounted to 0.46°C∙decade–1. Changes in water temperature were strongly dependent on the transformation of climatic conditions. An increase in the annual air temperature in the analogical multiannual for station Kalisz (about 20 km from the research site) amounted to 0.3°C∙decade–1. Such evident changes in the thermal regime of the Prosna Regime have and will have an effect on the functioning of the entire ecosystem. It is clearly visible among others in the occurrence of ice phenomena the persistence of which decreased by 5.6 day∙decade–1.
Źródło:
Woda-Środowisko-Obszary Wiejskie; 2017, 17, 3; 101-112
1642-8145
Pojawia się w:
Woda-Środowisko-Obszary Wiejskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatial and seasonal variability of sub-daily water temperature dynamics in the lowland agricultural catchment of the Wkra River
Autorzy:
Skorupa, Weronika
Łaszewski, Maksym A.
Powiązania:
https://bibliotekanauki.pl/articles/28411638.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
river water temperature
thermal fluctuations
Mazovia
Central Poland
hourly variations
thermal conditions
Opis:
The paper concentrates on seasonal and spatial variations of sub-daily water temperature dynamics in lowland agricultural streams. Temperature monitoring was carried out in 24 sampling sites distributed along the tributaries of the Wkra River during the hydrological year 2021. Statistical analysis of the obtained data documented the highest water temperature dynamics in the morning, from 5:00 to 9:00 CEST, while the lowest - from 14:00 to 18:00 CEST. Seasonally, greater water dynamics were noted in the winter, expressed by a coefficient of variation reaching up to 100%. Spatially, the highest dynamics occurred in sites with the lowest proportion of riparian vegetation, while the lowest dynamics was related to higher catchment area. In the winter, the minimum daily values were recorded most frequently in the morning hours, while maximum values in the afternoon. A similar pattern was observed in the summer, but with much lower dispersion of the relative frequencies. It was found that in the winter, the dominant influence on temperature dynamics was exerted in the upstream catchment area, while in the summer, a negative relationship with riparian shade was marked. The findings suggest that the presence of riparian vegetation reduces diurnal dynamics of water temperature and is simultaneously extremely important in prolonging the duration of optimum fluctuation, responsible for the proper development of poikilothermic organisms.
Źródło:
Journal of Water and Land Development; 2023, 59; 153--163
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 288

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