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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Groundwater flow due to a nonlinear wave set-up on a permeable beach

100%
Przyborska A.
Oceanologia
|
2014
|
tom 56
|
nr 3
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Surface wave generation due to glacier calving

63%
Massel S. R., Przyborska A.
Oceanologia
|
2013
|
tom 55
|
nr 1
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Attenuation of wave-induced groundwater pressure in shallow water. Part 2. Theory

51%
Massel S. R., Przyborska A., Przyborski M.
Oceanologia
|
2005
|
tom 47
|
nr 3
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Attenuation of wave-induced groundwater pressure in shallow water. Part 1

51%
Massel S. R., Przyborska A., Przyborski M.
Oceanologia
|
2004
|
tom 46
|
nr 3
A coastal aquifer has a dynamic seaward boundary at the beach face where physical and ecological processes are influenced by oceanic water level fluctuations. Many basic groundwater concepts and the role of the impact of groundwater seepage on beach ecosystems are still poorly understood. Studies are needed to improve our understanding of the relationships between surface and subsurface flow processes on beaches. This is particularly helpful in clarifying the interaction of the physical processes, biodiversity and productivity of sandy beaches, sediment transport and coastal structure stability and modern beach nourishment techniques. As the estimation of infiltration into beach sand is very difficult to carry out under real sea conditions, a control led large-scale laboratory experiment was carried out in the LargeWave Channel in Hannover (Germany) as part of a project supported by the European Community (contract HPRI-CT-2001-00157). First part of the paper describes the technology applied in the experiment and reports some preliminary results.
5
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Modelling of the Svalbard fjord Hornsund

45%
Jakacki J., Przyborska A., Kosecki S., Sundfjord A., Albretsen J.
Oceanologia
|
2017
|
tom 59
|
nr 4
The Arctic Ocean is currently in transition towards a new, warmer state. Understanding the regional variability of oceanographic conditions is important, since they have a direct impact on local ecosystems. This work discusses the implementation of a hydrodynamic model for Hornsund, the southernmost fjord of western Svalbard. Despite its location, Hornsund has a stronger Arctic signature than other Svalbard fjords. The model was validated against available data, and the seasonal mean circulation was obtained from numerical simulations. Two main general circulation regimes have been detected in the fjord. The winter circulation represents a typical closed fjord system, while in summer the fresh water discharge from the catchment area generates a surface layer with a net flow out of Hornsund. Also described are the local hydrographic front and its seasonal variability, as well as the heat and salt content in Hornsund. The integration of salt and heat anomalies provides additional information about the salt flux into the innermost basin of the fjord - Brepollen during the summer. Extensive in situ observations have been collected in Hornsund for the last two decades but our hydrodynamic model is the first ever implemented for this area. While at the moment in situ observations better represent the state of this fjord's environment and the location of measurements, a numerical model, despite its flaws, can provide a more comprehensive image of the entire fjord's physical state. In situ observations and numerical simulations should therefore be regarded as complementary tools, with models enabling a better interpretation and understanding of experimental data.
6

Use of Near Infrared Transillumination / Back Scattering Sounding (NIR-T/BSS) to assess effects of elevated intracranial pressure on width of subarachnoid space and cerebrovascular pulsation in animals

39%
Frydrychowski A. F., Wszedybyl-Winklewska M., Gumniski W., Przyborska A., Kaczmarek J., Winklewski P. J.
Acta Neurobiologiae Experimentalis
|
2011
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tom 71
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nr 3
The objective was to assess changes in the width of the subarachnoid space (SAS) and amplitude of cerebrovascular pulsation (CVP) during acute elevation of intracranial pressure (ICP) using Near Infrared Transillumination/Back Scattering Sounding (NIR-T/BSS). Changes in the width of the SAS and amplitude of CVP were observed in rabbits during experimental ICP elevation induced by: (1) quick injections of saline into the subdural space of the spinal cord, and (2) distension of a surgical catheter balloon placed intracranially in the subdural space. The amplitude of CVP was also assessed during acute elevation of blood pressure in the intracranial portion of the internal carotid artery (ICA) induced by adrenaline. Each of the injections of saline caused a transient rise in the width of the SAS and amplitude of CVP. The amplitude of the increase in CVP was dependent on changes in blood pressure in the ICA (r=-0.82, P<0.01). Distension of the intracranial balloon resulted in elimination of the respiratory oscillations in the CVP and increased its systolic-diastolic amplitude. An increase in the amplitude of CVP was evoked by adrenaline without an increase in the carotid blood flow. We demonstrated that during elevation of ICP the amplitude of CVP depends on blood pressure rather than on blood flow in large cerebral vessels. Elimination of the respiratory oscillations by a minute ("sub-critical") ICP increase may be used as an early indicator of rising ICP. The direction of changes recorded using NIR-T/BSS was consistent with changes recorded using tensometric transducers.
7

eBalticGrid - an interactive platform for the visualisation of results from a high-resolution operational Baltic Sea model

33%
Jakacki J., Przyborska A., Nowicki A., Wichorowski M., Przyborski M., Bialoskorski M., Sochacki C., Tylman R.
Meteorology Hydrology and Water Management. Research and Operational Applications
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2017
|
tom 05
|
nr 2
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