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Tytuł:
Energy-saving technologies with the use of water treated in magnetic fields
Ehnergosberegajushhie tekhnologii s ispolzovaniem vody, obrabotannojj v magnitnykh poljakh
Autorzy:
Zhuravska, N.
Malkin, E.
Powiązania:
https://bibliotekanauki.pl/articles/791998.pdf
Data publikacji:
2016
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
water structure
magnetic field
magnetized water
wave motion
water processing
energy saving
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2016, 16, 4
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Practical Implication of Tap Water Consumtpion Structure in Rural Households
Autorzy:
Bergel, T.
Powiązania:
https://bibliotekanauki.pl/articles/123101.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
rural household
water consumption
water consumption structure
Opis:
The aim of the study was to determine the structure of tap water consumption in rural households. The structure was analyzed based on direct measurements of water consumption carried out in the years 2011–2014 in 70 households in Rybna (Czernichów commune, Małopolska region). Thanks to two metering points (water supply connection and water supply point outside a residential building), it was possible to determine water consumption for the household and other purposes. The collected data indicated significant discrepancies between actual water consumption and those recommended in various guidelines. The analysis of water consumption structure showed that these discrepancies were also found for the amount of domestic sewage discharged from the rural households. This fact has significant practical implications, as the calculated metrics of unit water consumption are used during design and technical renovation of individual elements of water supply systems and for billing the inhabitants for water consumption in the households without a water meter (lump sum). The study also demonstrated inadequacy of the rule assuming that sewage amount is equal to the amount of water consumed in rural households, which is commonly used in design of sewerage networks and for calculating charges for sewage discharge.
Źródło:
Journal of Ecological Engineering; 2017, 18, 1; 231-237
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Protein thermal stabilization in aqueous solutions of osmolytes
Autorzy:
Bruździak, Piotr
Panuszko, Aneta
Jourdan, Muriel
Stangret, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/1038842.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
water structure
protein stability
circular dichroism
FT-IR spectroscopy
DFT calculations
Opis:
Proteins' thermal stabilization is a significant problem in various biomedical, biotechnological, and technological applications. We investigated thermal stability of hen egg white lysozyme in aqueous solutions of the following stabilizing osmolytes: Glycine (GLY), N-methylglycine (NMG), N,N-dimethylglycine (DMG), N,N,N-trimethylglycine (TMG), and trimethyl-N-oxide (TMAO). Results of CD-UV spectroscopic investigation were compared with FTIR hydration studies' results. Selected osmolytes increased lysozyme's thermal stability in the following order: Gly>NMG>TMAO≈DMG>TMG. Theoretical calculations (DFT) showed clearly that osmolytes' amino group protons and water molecules interacting with them played a distinctive role in protein thermal stabilization. The results brought us a step closer to the exact mechanism of protein stabilization by osmolytes.
Źródło:
Acta Biochimica Polonica; 2016, 63, 1; 65-70
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Molecular dynamics simulations study of nano bubble attachment at hydrophobic surfaces
Autorzy:
Jin, J.
Dang, L. X.
Miller, J. D.
Powiązania:
https://bibliotekanauki.pl/articles/109533.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
molecular dynamics simulations (MDS)
film stability
bubble attachment
interfacial water structure
Opis:
Bubble attachment phenomena are examined using Molecular Dynamics Simulations (MDS) for the first time. The simulation involves a nitrogen nano bubble containing 906 nitrogen molecules in a water phase with 74,000 water molecules at molybdenite surfaces. During a simulation period of 1 ns, film rupture and displacement occurs. The attached nanobubble at the hydrophobic molybdenite face surface results in a contact angle of about 90º. This spontaneous attachment is due to a “water exclusion zone” at the molybdenite face surface and can be explained by a van der Waals (vdW) attractive force, as discussed in the literature. In contrast, the film is stable at the hydrophilic quartz (001) surface and the bubble does not attach. Contact angles determined from MD simulations are reported, and these results agree well with experimental and MDS sessile drop results. In this way, film stability and bubble attachment are described with respect to interfacial water structure for surfaces of different polarity. Interfacial water molecules at the hydrophobic molybdenite face surface have relatively weak interactions with the surface when compared to the hydrophilic quartz (001) surface, as revealed by the presence of a 3 Å “water exclusion zone” at the molybdenite/water interface. The molybdenite armchair-edge and zigzag-edge surfaces show a comparably slow process for film rupture and displacement when compared to the molybdenite face surface, which is consistent with their relatively weak hydrophobic character.
Źródło:
Physicochemical Problems of Mineral Processing; 2018, 54, 1; 89-101
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the structure of water consumption in rural households in terms of design guidelines water and sewage systems
Autorzy:
Bergel, T.
Kaczor, G.
Bugajski, P.
Powiązania:
https://bibliotekanauki.pl/articles/100995.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
rural household
water consumption
structure of water consumption
Opis:
The aim of the paper was an analysis of the structure of tap water consumption by rural households considering the use of its results for designing the elements of water supply and sewer systems. The analysis of this structure was based on direct measurements of water consumption conducted in 2011-2014 in 30 households located in Przeginia Duchowna village (Czernichów commune, Malopolskie province). Double measurement of water consumption (water supply connection or water draw off point outside a residential building) enabled the separation water consumption for household and additional purposes from the total water consumption per household. Analysis of the collected data revealed considerable disproportions between the real water consumption and stated in the design guidelines. Calculated on the basis of the study, averaging 85.6 dm3 I-1·d-1, accounted for only 57% of the value of 150 dm3 I-1·d-1 most commonly used in design. Because of the possible determining the water consumption structure it was demonstrated, that the divergences concerned also the volume of domestic sewage discharged from rural households. Obtained results revealed also that application of the principle, where the volume of sewage equals the volume of water consumption by rural households, for designing sewer systems is usually incorrect. In the analyzed household in fact, only 83.1% of the volume of waste water was discharged in the form of waste water to the sewage system. The remainder was called. non-returnable water consumption for additional purposes.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2016, IV/4; 1899-1910
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modification of the hydrogen bonding network at the reversed micelles interface by near infrared radiation
Autorzy:
Walski, T.
Gałecka, T.
Grzeszczuk-Kuć, K.
Komorowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/148832.pdf
Data publikacji:
2013
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
electron paramagnetic resonance (EPR)
hydrogen bonds
near infrared radiation (NIR)
cetyltrimethylammonium bromide (TCAB) reverse micelles
TEMPO-palmitate spin probe
water structure modification
Opis:
The purpose of this paper is to prove that near infrared radiation (NIR) modifies hydrogen bonds localized in the interface of reversed micelles. The degree of modification of the hydrogen bonds was monitored by TEMPO-palmitate spin probe introduced into the structure of reverse micelles formed by cetyltrimethylammonium bromide (CTAB) (TCAB/phosphate buffer/isooctane/hexanol and TCAB/NaCl/isooctane/hexanol (W = 15)). Electron paramagnetic resonance (EPR) spectra were performed on the argonated samples. The isotropic tumbling correlation time (τc) and the hyperfine coupling constant A+ = h0 – h+1 (h+1, and h0 correspond to the low-, and centre-field lines, respectively) were determined from the EPR spectra as a quantitative measure for monitoring the action of NIR radiation. A+ values depend on the composition of the water pool (1.640 mT for phosphate buffer and 1.630 mT for NaCl). NIR irradiation led to decrease in A+. This parameter reached the same value for both solutions (1.625 ± 0.003 and 1.626 ± 0.003 mT) after exposition to NIR. The tumbling correlation time after exposure to NIR decreased for TCAB/phosphate buffer/ isooctane/hexanol reversed micelles from 2.10 × 10–10 s to 1.44 × 10–10 s but did not change for TCAB/NaCl/isooctane/ hexanol). The results obtained confirm the possibility of modification of the hydrogen bonds by NIR radiation.
Źródło:
Nukleonika; 2013, 58, 3; 435-438
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental Determination of the Relationship between Soil Structure Parameters and Indicators of Water Saturation and Filtration
Autorzy:
Lukyanchuk, Olexander
Powiązania:
https://bibliotekanauki.pl/articles/31340457.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:
ground water
soil structure
water saturation
filtration
Opis:
Modern climatic changes, in particular, changes in the amount and intensity of soil moisture (precipitation regime), have a significant impact on the water-physical properties of mineral soils. The state of soil’s solid phase and the mutual arrangement of its structural particles can be considered as the most significant factor for soil properties. Due to the structure of the soil, it is possible to influence the uniformity of the distribution of water in the soil sample not only in the vertical direction, but, partially, also in the horizontal direction, which will allow to resolve the issue of local flooding of individual areas and the bearing capacity of mineral soils. For the analysis of changes in the water-physical properties of the soil environment, the soil was considered as a homogeneous in density and continuous environment formed by a set of separate structural aggregates connected by cohesive forces. Based on the experimental results of the physical modelling, it was determined that the presence of structural soil macroaggregates with a size of 4 to 6 mm is the most appropriate for slowing down the vertical filtration of water saturating the lower soil layers, and the formation of structural soil macroaggregates of size larger than 6 to 10 mm for the predominant types of soils is necessary to increase the vertical filtration. Due to the size of the formed macroaggregates, it is possible to predict a change in the water-physical parameters of the soil, which then can be used for the assessment of the calculated characteristics of the soil environment.
Źródło:
Archives of Hydro-Engineering and Environmental Mechanics; 2023, 70, 1; 89-100
1231-3726
Pojawia się w:
Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of the structure of the active mass to changes in selected parameters of water
Autorzy:
Nowak, R.
Powiązania:
https://bibliotekanauki.pl/articles/123404.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
chemical structure
active mass
water
Opis:
The paper presents the results from studies upon the influence of chemical structure of filtration masses used for the treatment of groundwater on the values of selected physicochemical parameters of water. The pH value of treated water and the redox potential are important in process the oxidation of iron and manganese compounds. These values may change as a result of water contact with filter materials. The value of zeta potential of filtration masses characterizing the surface charge of particles and their affinity to counter-ions, is also important. The study tested masses of different chemical structure, i.e. manganese ores and de-acidifying masses. Experiments were carried out at two different pH values of the model water. The results showed that the filtration masses affected the water quality and water treatment processes, and the type and magnitude of changes in physicochemical parameters are closely related to, among others, the chemical structure of the filter bed.
Źródło:
Journal of Ecological Engineering; 2016, 17, 5; 155-162
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An attempt at evaluating the influence of water quality on the qualitative and quantitative structure of epiphytic fauna dwelling on Stratiotes aloides L., a case study on an oxbow lake of the Lyna River
Proba oceny wplywu jakosci wod na strukture jakosciowo-ilosciowa epifauny zasiedlajacej Stratiotes aloides L. na przykladzie starorzecza Lyny
Autorzy:
Obolewski, K
Glinska-Lewczuk, K.
Kobus, S.
Powiązania:
https://bibliotekanauki.pl/articles/16035.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
macrofauna
epiphytic macrofauna
water chemism
oxbow lake
Lyna River
water quality
qualitative structure
quantitative structure
Stratiotes aloides
Opis:
The paper contains the results of a study on the dependence of the qualitative and quantitative structure of the phytophilous macrofauna dwelling on Stratiotes aloides L. (water soldier) on the quality of waters in a lentic oxbow lake of the £yna River. The observations were carried out during the vegetative season (April – June) 2006 at high and moderate water levels. During the study, a total of 18 taxa of invertebrates dwelling on the above plant species were identified, with the exact number of taxa varying in time: 11 taxa were noticed in April and May, and in June their number went up to 13. The examination of hydrochemical parameters of the oxbow lake waters revealed that the density of macrofauna was lower at higher values of proper conductivity and macronutrients, ammonia nitrogen and COD, increasing at high levels of sulphates. High concentrations of ammonia nitrogen and non-organic components coincided with decreased biomass of epiphytic animals on water soldier. Additionally, it has been observed that elevated concentrations of potassium ions have a negative influence on the biomass of most epiphytic animals (except Erpobdella sp.).
W pracy przedstawiono wyniki badań nad próbę określenia zależności struktury jakościowo- ilościowej makrofauny fitofilnej zasiedlającej Stratiotes aloides L. od jakości wód w lentycznym starorzeczu rzeki Łyny. Badania prowadzono w okresie wegetacyjnym (IV- -VI) 2006 r. przy wysokich i średnich stanach wód. W czasie badań zidentyfikowano łącznie 18 taksonów bezkręgowców zasiedlających ten gatunek roślinny, przy czym ilości te podlegały zmienności czasowej: w kwietniu i maju zanotowano 11 taksonów, a w czerwcu 13. Spośród badanych parametrów hydrochemicznych wód starorzecza zagęszczenie makrofauny epifitycznej było niższe w przypadku wysokich wartości przewodnictwa właściwego i makroskładników, azotu amonowego i ChZT, natomiast wzrastało w przypadku wysokich stężeń siarczanów. Wysokie stężenia azotu amonowego i składników nieorganicznych towarzyszyły spadkowi biomasy zwierząt epifitycznych zamieszkujących osokę. Ponadto stwierdzono negatywny wpływ podwyższonych stężeń jonów potasu na biomasę zwierząt naroślinnych (z wyjątkiem Erpobdella sp.).
Źródło:
Journal of Elementology; 2009, 14, 1; 119-133
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental assessment of changes in structural steel composition by progressive technology cutting
Autorzy:
Mascenik, Jozef
Powiązania:
https://bibliotekanauki.pl/articles/2037386.pdf
Data publikacji:
2021
Wydawca:
STE GROUP
Tematy:
laser
plasma
water jet
cutting
structure
microhardness
Opis:
The submitted paper deals with the issue of change in structure, hardness and thermally affected zone of the samples of a toothed wheel part produced by technology of cutting by plasma, laser and water jet. The cutting process by laser and plasma technology causes intensive thermal affection of material and change in structure and microhardness in the cutting area referred to as thermally affected zone. The paper describes three material cutting technologies of the toothed wheel part. The experimental part contains description of experimental sample preparation, its hardness measurement and examination of structure along with further evaluation through graphs and photo documentation of structures.
Źródło:
Management Systems in Production Engineering; 2021, 4 (29); 266-273
2299-0461
Pojawia się w:
Management Systems in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the buoyant sub-surface salinity maxima in the Gulf of Riga
Autorzy:
Liblik, T.
Skudra, M.
Lips, U.
Powiązania:
https://bibliotekanauki.pl/articles/48990.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
thermohaline structure
Riga Gulf
water column
temperature
salinity
stratification
water exchange
intrusion
Opis:
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
Źródło:
Oceanologia; 2017, 59, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected problems of the termohaline structure and dynamics of the water masses in Norwegian and Greenland Seas
Autorzy:
Jankowski, Andrzej
Swerpel, Sławomir
Powiązania:
https://bibliotekanauki.pl/articles/2052902.pdf
Data publikacji:
1990
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Norwegian—Greenland Seas
termohaline structure
water dynamics
Źródło:
Polish Polar Research; 1990, 11, 1-2; 3-16
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Good practice in construction of flexible soil-steel structures. Well done installations of buried bridges
Autorzy:
Tomala, P.
Stachowicz, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/383572.pdf
Data publikacji:
2017
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
buried structure
water protect
support
drainage
animal overpass
Opis:
The following article raises questions on good practices that should accompany both the design and installation process of corrugated soil-steel bridges. Solutions for crucial elements of soil-steel structures developed over the years of experience and observations are put forward. The authors put special emphasis on issues related to the flexible soil-steel structures protection against water and point to new developments in the waterproof design area. The paper presents examples of properly executed civil engineering facilities, which indicated further development directions. The authors wish to draw attention to the fact that with the popularization of corrugated steel plate bridges the necessity of dissemination of correct and reliable solutions among designers and contractors increases. They provide a guarantee for long and seamless bridge utilization.
Źródło:
Archiwum Instytutu Inżynierii Lądowej; 2017, 23; 269-278
1897-4007
Pojawia się w:
Archiwum Instytutu Inżynierii Lądowej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Extraordinary project - railway tunnel SH16 Birtouta - Sidi Abdallah - Zeralda km 10+700 - 10+880, Algeria
Autorzy:
Basar, O.
Samolewski, W.
Tomala, P.
Czerepak, A.
Powiązania:
https://bibliotekanauki.pl/articles/383698.pdf
Data publikacji:
2017
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
tunnel
flexible soil-steel structure
backfilling
water tightness
Opis:
In November 2015 SH16 Tunnel in Birtouta - Sidi Abdallah - Zeralda Railway project in Algeria was designed. As a superstructure of the tunnel a soil-steel structure with deep corrugation 380 x 140 mm was chosen. The tunnel is 180 m long, has a diameter of 12 m and three bends. The maximum cover depth above the structure is around 7 m. To increase bolted connection capacity, due to extremely large axial force, unique 4-row bolts connections were used with class 10.9 bolts. Main reasons to choose corrugated steel plates technology were savings and short installation time. As a fully watertight tunnel was required, a double sealing system was designed. The first element of the system is a permanently flexible sealant applied along overlaps and in plastic caps on the bolted connections. As the second element of the watertightening system an EPDM membrane was proposed (for the first time ever) to entirely cover the round shape of the tunnel. Connections between pieces of EPDM were made according to the manufacturer’s specific instructions. The installation of the structure began in December 2015 and was executed by teams of the main contractor supervised by a technical assistant from ViaCon Construction sp. z o.o. and one of the designers. The SHI6 tunnel is the first ViaCon structure supplied to Maghreb countries.
W listopadzie 2015 roku zaprojektowany został tunel SH16 linii kolejowej Birtouta – Sidi Abdallah – Zeralda w Algierii. Ustrój nośny obiektu zaprojektowano jako stalowo- gruntową konstrukcję podatną z blach falistych o profilu fali 380 x 140 mm. Długość tunelu wynosi 180 m a średnica jego kołowego przekroju poprzecznego to 12 m. Tunel znajduje się na łuku poziomym, więc konstrukcja tunelu została wykonana w czterech prostych odcinkach, połączonych pod kątem za pomocą elementów spawanych, tak aby wpisać się w krzywiznę toru. Maksymalny naziom nad konstrukcją wynosi 7 m. Ze względu na wyjątkowo dużą siłę osiową, wprowadzono dodatkowy, nigdy wcześniej nie stosowany, czwarty rząd śrub, dla zwiększenia nośności połączenia śrubowego. Wszystkie użyte śruby są klasy 10.9. Ze względu na wymaganie szczelności został zaprojektowany i wbudowany podwójny system uszczelnienia tunelu. Jako pierwsze zabezpieczenie, zastosowano trwale elastyczny uszczelniacz aplikowany w szczelinach połączeń blach nakładanych na siebie oraz na śrubach i nakrętkach przy użyciu plastikowych kapturków. Jako drugie zabezpieczenie, zastosowano gumową membranę EPDM, przy użyciu której szczelnie otoczono konstrukcję stalową tunelu. Obiekt został oddany do użytku we wrześniu 2015 roku i jest jedną z najdłuższych konstrukcji powłokowo-gruntowych na świecie.
Źródło:
Archiwum Instytutu Inżynierii Lądowej; 2017, 23; 61-72
1897-4007
Pojawia się w:
Archiwum Instytutu Inżynierii Lądowej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distinctive features of water exchange across the Słupsk Sill (a full-scale experiment)
Autorzy:
Paka, V.
Golenko, N.
Korzh, A.
Powiązania:
https://bibliotekanauki.pl/articles/47795.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Sopot
water exchange
thermohaline structure
Slupsk Sill
saline water
conference
Baltic Sea
high-resolution transect
inflow water
brackish water
Opis:
The flows of brackish waters in the upper layer and saline waters in the lower layer meet above the Słupsk Sill, which makes this one of the most significant features of the Baltic Sea, controlling as it does the ventilation of the deep basins in its central region. Earlier high-resolution measurements using towed scanning probes conducted here for more than ten years had revealed the complexity and variability of the water dynamics in this area. Mapping surveys repeated in quick succession are needed to study the water exchange in such an area. A survey of this kind was attempted in October 2003 during the 57th cruise of the r/v ‘Professor Shtokman’. Three surveys were carried out in the areas of the Słupsk Sill, the eastern Bornholm Basin, and the western Słupsk Furrow by means of a scanning probe towed along closely-spaced transects. The water structure around the sill was different each time, despite the rather short time gaps between the surveys. As follows from the data analysis, during the first survey, the saline Bornholm waters flowed over the sill as an axially symmetrical jet and entrained the adjacent freshened cold waters of the intermediate layer. In ten days, this joint flow displaced to the southern flank of the sill and propagated in the Słupsk Furrow along its southern border, with the dense core of saline waters gradually moving over the bottom to the northern border. Concurrently, the contrary flow of the main volume of cold freshened waters, originating from northern areas and leaving the Baltic Sea, was pushed away from the southern wall of the furrow and blocked at a significant distance from the sill. In three days, the blocked waters forced their way through towards its northern flank. Just below these waters, waters of elevated salinity were found above the eastern slope of the sill at the depth of its ridge, while waters of a similar salinity occurred below the depth of the ridge above the western slope of the sill. There were no indications of intensive overflow in the central and southern areas of the sill. Accordingly, the return flow of Bornholm waters across the sill became possible.
Źródło:
Oceanologia; 2006, 48, S
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 65

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