Wyniki wyszukiwania

1

Flow across south and east boundaries of the Norwegian Sea

100%

Druet C., Jankowski A.

Oceanologia

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1991

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tom 30

2

Influence of water exchange between the Baltic Sea and the North Sea on storm surges in the Baltic

100%

Chilicka Z., Kowalik Z.

Oceanologia

|

1984

|

tom 19

3

Verification of a certain numerical model with the real storm surge of December 1976 in the Baltic Sea

100%

Chilicka Z.

Oceanologia

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1984

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tom 19

4

Water mass exchange between the Gulf of Gdansk and the Baltic Sea

100%

Jankowski A.

Oceanologia

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1985

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tom 20

5

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The pathway of the water exchange over the Gdansk-Gotland Sill of the Baltic Sea and its impact on habitat formation during the stagnation period

100%

Krek A., Gusev A., Krek E., Krechik V., Kapustina M., Kondrashov A., Dudkov I.

Oceanologia

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2021

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tom 63

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nr 2

6

Water exchange between the Baltic and the North Sea based on a barotropic model

100%

Kowalik Z., Staskiewicz A.

Oceanologia

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1978

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tom 09

7

Molecular diffusion water exchange in compartments of tissue water of maize

100%

Zaitseva I., Syrovatko V.

International Letters of Natural Sciences

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2016

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tom 51

For studying water exchange in compartments of tissue water of maize, kinetic curves of dilution of tritium labeled water (3Н) were used, with the incubation of plant tissues in it. By resolving the summary kinetic curves into components, we determined the constants of membranes’ permeability for exchange diffusion flux in two compartments of tissue water – membranerestricted water and water of higher mobility in free space of cell envelopes, and quantitative content of symplastic and apoplastic water in the plant tissues. Significant differences of rates of water-exchange processes in the symplast and apoplast of maize types with various genotypes were found at the temperatures of 20, 30, 40 and 50°С. In the Pioneer hybrid these figures vary in the intervals of 1,83–3,67 s-1·10-4 and 0,91–1,33 s-1·10-3, whereas in self-pollinated line А-204 the intervals are 1,80–3,51 and 1,12–1,48 accordingly. Peculiar features of water exchange reactions suggest the higher physiological constancy of the Pioneer hybrid under thermal action.

8

The water exchange in estuarine lakes of the Southern Baltic Sea as on the Gardno Lake example

100%

Jedrasik J., Cyberski J.

Oceanological Studies

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2000

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tom 29

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nr 3

9

Coherent current oscillations and water exchange in the straits of the Gulf of Riga

100%

Talpsepp L.

Oceanologia

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2005

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tom 47

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nr 2

The water exchange processes through the Irbe and Virtsu (Suur) Straits were investigated in 1993–1997 within the framework of a five-year study programme – the Gulf of Riga Project. Simultaneous current measurement data from autonomous mooring stations in both straits were available for the analysis in two periods. In addition to the dominant signals – inertial oscillations in the Virtsu Strait and diurnal oscillations in the Irbe Strait – low-frequency oscillations were found in both straits. During the experiment in July–August 1994, 12–14-day oscillations were observed in both straits: the maximum phase lag in the Virtsu Strait was 1 day. The other important low-frequency periodic component in both straits was 88 hours. In this case, the phase lag in the Virtsu Strait was about 20 hours. In the 1995 experiment in the Irbe Strait, 42-hour oscillations were observed with a phase lag of 10–12 hours. The amplitude was about 30 cm s−1 in both straits. As in Lilover et al. (1998), where the flow regime in the Irbe Strait was observed, we can interpret these oscillations as being wind-generated. The present work shows the existence of these disturbances also in the Virtsu Strait. The 88-hour oscillations observed in July–August 1994 can be interpreted as the first mode of the basin’s eigenoscillations according to the concept of Otsmann et al. (1997) of a basin with two separate outlets. The lowest frequency oscillation with the period of 12–14 days seemed to propagate to the Gulf of Riga from the Baltic Proper, but the generating force could not be established because there was no noticeable variability between depressions and anticyclones during that period. Based on the current measurements, two types of water exchange through the Irbe strait were established: the outflow over the whole cross-section of the strait, and a bidirectional flow with an inflow near the southern shore and increasing inflow in the near-bottom layers and an outflow in the northern part of the strait.

10

Investigations into biophysical regulation mechanisms of physiological water exchange of the Nitella translucens cells with the surroundings

100%

Kargol M., Suchanek G., Przestalski M., Kargol A.

Acta Physiologiae Plantarum

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2006

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tom 28

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nr 1

In the present paper, we have presented a theoretical discussion of specific biophysical mechanisms per taining to the regulation (by means of internal factors) of physiological water ex change with the water medium by the cells of the Nitella translucens. The investigation has demonstrated that these cells have a capacity for water ex change regulation through changes in the values of transport parameters of the cell membrane (i.e. the filtration coefficient Lp and the reflection coefficient σ), as well as changes in the concentration Csi (in side the cells) of the osmotically active solute.

11

Exchange of water in the soil-plant-atmosphere system

100%

Kutilek M., Novak V.

International Agrophysics

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1998

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tom 12

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nr 1

12

Variability of temperature and salinity over the last decade in selected regions of the Southern Baltic Sea

84%

Rak D., Wieczorek P.

Oceanologia

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2012

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tom 54

|

nr 3

Changes in the basic physical properties of selected areas of the Baltic Proper were analysed on the basis of the results of a 12-year series of high-resolution measurements collected during cruises of r/v ‘Oceania’. The high-resolution CTD sections covered three main basins: the Bornholm Basin, Słupsk Furrow and Gdańsk Basin. Positive temperature trends of 0.11 and 0.16◦C year−1 were observed in the surface and deep layers respectively. The salinity trend was also positive. The rise in the air temperature has probably caused the increase in surface water temperature, while advection has been of greater significance in the deep layer. The increase in salinity coincides with the more frequent occurrence of small and medium-size inflows through the Danish Straits, even though large inflows are evidently less frequent than used to be the case. The seasonal variability of temperature in the water column was analysed. The phase shift in the seasonal evolution with depth is described. The maximum temperature shift in the waters investigated varies from 32 to 38 days.

13

Currents and waves in the Northern Gulf of Riga: measurement and long-term hindcast

84%

Suursaar U., Kullas T., Aps R.

Oceanologia

|

2012

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tom 54

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nr 3

Based on measurements of waves and currents obtained for a period of 302 days with a bottom-mounted RDCP (Recording Doppler Current Profiler) at two differently exposed locations, a model for significant wave height was calibrated separately for those locations; in addition, the Gulf of Riga-Vainameri 2D model was validated, and the hydrodynamic conditions were studied. Using wind forcing data from the Kihnu meteorological station, a set of current, water exchange and wave hindcasts were obtained for the period 1966–2011. Current patterns in the Gulf and in the straits were wind-dependent with characteristic wind switch directions. The Matsi coast was prone to upwelling in persistent northerly wind conditions. During the hindcast period, currents increased along the Koiguste coast and in the Suur Strait, waves decreased noticeably off Koiguste but fluctuated without a clear linear trend near Matsi. The spatially contrasting results for differently exposed coasts were related to the corresponding variations in local wind conditions and to changes in atmospheric circulation patterns over northern Europe.

14

Effect of water exchange on water quality and the production of ornamental carp (Cyprinus carpio var. koi L.) cultured in concrete tanks manured with poultry excreta

84%

Jha P., Barat S.

Archives of Polish Fisheries

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2005

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tom 13

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nr 1

The effect of water exchange on water quality, plankton abundance, and the production of koi carp, Cypńnus carpio var. koi L., cultured in outdoor concrete tanks manured with poultry excreta was determined. Individual weight gain and survival rates of fish (initial weight 0.09 ± 0.02 g) were compared among five culture regimes, where a volume of 100 dm³ water was exchanged: (1) every day (WEI); (2) every alternate day (WE2); (3) two times a week (WE3); (4) once a week (WE4); and (5) a control treatment with no water exchange (NE). Significandy higher concentrations (P < 0.05) of conductivity, NH₄ -N, NO₂ -N, NO₃ -N, PO₄ -P and bicarbonate alkalinity were recorded in the NE treatment. Plankton volume was highest in WEI (P < 0.05). The weight gain and number of koi carp of marketable size were significantly higher (P < 0.05) in WEI. There was a significant difference in the survival of koi carp among the treatments ranging from 60.43% (NE) to 95.21% (WEI). The results suggest a water exchange of 100 dm³ daily (WEI) was the most effective for koi carp tanks manured with poultry excreta as better water quality and greater plankton abundance were both maintained in the system.

15

On the buoyant sub-surface salinity maxima in the Gulf of Riga

84%

Liblik T., Skudra M., Lips U.

Oceanologia

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2017

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tom 59

|

nr 2

Thermohaline structure in the Gulf of Riga (GoR) was investigated by a multiplatform measurement campaign in summer 2015. Stratification of the water column was mainly controlled by the temperature while salinity had only a minor contribution. Buoyant salinity maxima with variable strength were observed in the intermediate layer of the Gulf of Riga. The salinity maxima were likely formed by a simultaneous upwelling—downwelling event at the two opposite sides of the Irbe strait. The inflowing salty water did not reach the deeper (> 35 m) parts of the gulf and, therefore, the near-bottom layer of the gulf remained isolated throughout the summer. Thus, the lateral water exchange regime in the near bottom layer of the Gulf of Riga is more complicated than it was thought previously. We suggest that the occurrence of this type of water exchange resulting in a buoyant inflow and lack of lateral transport into the near-bottom layers might contribute to the rapid seasonal oxygen decline in the Gulf of Riga

16

The history of coastal lakes studies with a special regard to Lake Gardno

84%

Paturej E.

Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline

|

2001

|

tom 05

17

Consltruction of a numerical model of storm surges with a refined grid

84%

Chilicka Z., Kowalik Z., Wierzbicki Z.

Oceanologia

|

1983

|

tom 16

18

Estimation of net carbon and water exchange at a scots pine forest stand in Poland

84%

Urbaniak M., Chojnicki B. H., Danielewska A., Baran M., Olejnik J.

Acta Agrophysica. Rozprawy i Monografie

|

2010

|

nr 2[179]

19

Periodic variability of currents induced by topographically trapped waves in the coastal zone in the Gulf of Finland

84%

Talpsepp L.

Oceanologia

|

2006

|

tom 48

|

nr S

The aim of this paper is to examine the water exchange regime between the bays of northern Estonia (Pakri Bay, Ihasalu Bay and Muuga Bay) and the open part of the Gulf of Finland. To this end, the current measurements and CTD-castings performed at the border of the bays and the open part of the Gulf of Finland in summer 1994, 1995–96 and 1997 are analysed. All the current measurements displayed one feature in common: the existence of periodic variability with a current amplitude of between 5 and 25 cm s−1 and a variability period of 3–4 days (68 hours in Pakri Bay, 72 hours in Muuga Bay and 78 hours in Ihasalu Bay). The amplitudes of this variability differed during different time periods of the experiment and in different parts of the southern Gulf of Finland. The hypothesis was propounded that this variability is the result of bottom-trapped waves, as had been found in many other regions of the Baltic Sea (Aitsam & Talpsepp 1982, Talpsepp 1983). To interpret the results of the measurements, a model of bottom-trapped waves for this region was used. This was the short-wave version of Huthnance’s (1978) numerical model of coastal-trapped waves, according to which the wave parameters for the experimental regions were calculated. Comparison of the model and the measurements implies that coastal-trapped waves do exist off the southern coast of the Gulf of Finland.

20

Biophysical mechanisms of physiological water exchange with the surroundings by the cells of the Nitella translucens and Chara corallina plants

84%

Kargol M., Kargol A.

Acta Physiologiae Plantarum

|

2005

|

tom 27

|

nr 1

In the present study, we discussed the biophysical mechanisms of stationary wa ter ex change with the surroundings by the Nitella translucens and Chara corallina plants. It was postulated that these plants, which subsist under total immersion in a water medium, conduct water exchange within single cells individually. With the application of the equations of mechanistic formalism for membrane transport to our investigations (Kargol and Kargol 2000, Kargol 2001, Kargol 2002, Kargol and Kargol 2003, 2003*), it was demonstrated that individual cells of these plants can simultaneously absorb and remove considerable amounts of water at constant cell volume, i.e. under stationary conditions. Water absorption is osmosis-driven, and its removal is effected by the cell turgor pressure.

Ograniczanie wyników

Flow across south and east boundaries of the Norwegian Sea

Influence of water exchange between the Baltic Sea and the North Sea on storm surges in the Baltic

Verification of a certain numerical model with the real storm surge of December 1976 in the Baltic Sea

Water mass exchange between the Gulf of Gdansk and the Baltic Sea

The pathway of the water exchange over the Gdansk-Gotland Sill of the Baltic Sea and its impact on habitat formation during the stagnation period

Water exchange between the Baltic and the North Sea based on a barotropic model

Molecular diffusion water exchange in compartments of tissue water of maize

The water exchange in estuarine lakes of the Southern Baltic Sea as on the Gardno Lake example

Coherent current oscillations and water exchange in the straits of the Gulf of Riga

Investigations into biophysical regulation mechanisms of physiological water exchange of the Nitella translucens cells with the surroundings

Exchange of water in the soil-plant-atmosphere system

Variability of temperature and salinity over the last decade in selected regions of the Southern Baltic Sea

Currents and waves in the Northern Gulf of Riga: measurement and long-term hindcast

Effect of water exchange on water quality and the production of ornamental carp (Cyprinus carpio var. koi L.) cultured in concrete tanks manured with poultry excreta

On the buoyant sub-surface salinity maxima in the Gulf of Riga

The history of coastal lakes studies with a special regard to Lake Gardno

Consltruction of a numerical model of storm surges with a refined grid

Estimation of net carbon and water exchange at a scots pine forest stand in Poland

Periodic variability of currents induced by topographically trapped waves in the coastal zone in the Gulf of Finland

Biophysical mechanisms of physiological water exchange with the surroundings by the cells of the Nitella translucens and Chara corallina plants