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Tytuł:
Wind influence on the formation of nearshore currents in the southern Baltic: mumerical modelling results
Autorzy:
Sokolov, A.
Chubarenko, B.
Powiązania:
https://bibliotekanauki.pl/articles/241238.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:
currents
waves
numerical modelling
coastal zone
Baltic Sea
Opis:
A two-dimensional numerical model was used for a simulation of vertical average longshore currents generated by both wind friction and wind-wave action in the nearshore zone. The modelling domain includes the southern part of the Baltic Proper (all boundaries were closed). Wind, uniform in space and varying in time, was the only forcing in the model. The correlation coefficient higher than 0.8 was obtained by model calibration versus the field measurements of currents conducted at the Lubiatowo field station (southern Baltic) during about 1.5 months in 2006. Comparative simulations of total currents including both wind-induced drift and wave components, and of total currents including only a wind-induced drift component, showed that the input of the drift component into currents in the nearshore zone is greater than commonly believed. Wind-induced drift strongly dominates outside the zone of wave transformation, and its input into the total resulting currents remains noticeable even in a zone between the shoreline and the depth of the first wave breaking. Thus, wind-induced drift constitutes up to 50% of the resulting longshore currents for longshore winds and no less than 20% of the longshore component of currents for winds at 45 degrees to the longshore direction.
Źródło:
Archives of Hydro-Engineering and Environmental Mechanics; 2012, 59, 1-2; 37-48
1231-3726
Pojawia się w:
Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sulphates in particles of different sizes in the marine boundary layer over the Southern Baltic Sea
Autorzy:
Falkowska, L.
Lewandowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/48464.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
coastal zone
marine boundary layer
sulphate
aerosol
concentration
Baltic Sea
Opis:
Concentrations of sulphate ions and particle size distributions were measured in the marine boundary layer using a ten-cascade Berner impactor at Hel between December 1997 and March 1998, and with a filter packin Gdynia from February to May 2001. In the marine boundary layer over the Hel Peninsula the presence of natural sea-salt and non-sea-salt sulphate ions (nssSO4 2−) was confirmed in the aerosols. The nssSO4 were present in all size ranges only in December 1997 and in the first half of January 1998, making up an average of 83.7±2.4% of the total sulphate content. In the other winter months, nssSO4 2− were recorded only in aerosols of diameters from 0.4 to 1.5 μm, and their average contribution dropped by over 20%. The extended growing season in the Southern Baltic resulted in the formation of fine particles that appeared in the marine boundary layer in early winter. At that time the proportion of nssSO4 2− in ultra-fine particles ranged from 75.7% to 100%. The concentration of nssSO4 2−, which varied from 0.8 to 2.3 nmol m−3 in particles < 0.4 μm in size probably constituted the natural background aerosol population in the relatively clean coastal environment of the Southern Baltic Sea. In the coastal urbanised area of Gdynia, the sulphate concentration in aerosols was higher than at Hel (av. 75.3 nmol m−3) but the proportion of nssSO4 was low, of the order of 24%. Sea salt was then the dominant source of sulphate.
Źródło:
Oceanologia; 2004, 46, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Is the bristleworm Pygospio elegans Claparede (Spionidae) realy a deposit-feeder?
Czy wieloszczet Pygospio elegans Claparede (Spionidae) naprawdę żywi się materiałem zgromadzonym w osadach?
Autorzy:
Piesik, Z.
Obolewski, K.
Powiązania:
https://bibliotekanauki.pl/articles/84857.pdf
Data publikacji:
2007
Wydawca:
Akademia Pomorska w Słupsku
Tematy:
polychaete
Pygospio elegans
Spionidae
deposit
feeding
Baltic Sea
coastal zone
Opis:
Gut contents of Pygospio elegans Claparede (Spionidae) individuals collected in the Polish coastal zone of the Baltic were analysed. Guts of almost all the P. elegans (89-100%) were found to contain sand grains and detritus. Microalgae (Bacillariophyta, Chlorophyta, Flagellata) occurred in the guts of 8-100% P. elegans individuals. Noteworthy was the finding, in the P. elegans gut contents, of oligochaeta remains, indicative of some predatory behaviour of the polychaete. The oligochaete contribution to the P. elegans food increased with polychaete size (from 33 to 100%). Therefore, P. elegans in the Baltic population should be regarded as omnivores rather than suspension feeders- deposit feeders they have been classified with so far.
Analizowano zawartość przewodu pokarmowego Pygospio elegans Claparede (Spionidae) żyjącego w polskiej strefie przybrzeżnej Bałtyku. Jelita P. elegans zawierały prawie wyłącznie (89-100%) piasek i szczątki organiczne. Microalgae (Bacillariophyta, Chlorophyta, Flagelant) wystąpiły w jelitach P. elegans w ilościach od 8 do 100%. Godne uwagi było odkrycie, wewnątrz zawartości jelit P. elegans, resztek oligochaeta, co wskazuje na drapieżne zachowania tego wieloszczeta. Udział skąposzczetów w diecie P. elegans był w niektórych badanych rejonach znaczny (33-100%). Dlatego też P. elegans powinien zostać zaliczony do zwierząt wszystkożernych, a nie, jak dotychczas, do filtratorów eliminujących bioseston.
Źródło:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2007, 11
1643-0115
Pojawia się w:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aspects of Pollution in Gdansk and Gdynia Harbours at the Coastal Zone of the South Baltic Sea
Autorzy:
Radke, B.
Piketh, S.
Wasik, A.
Namieśnik, J.
Dembska, G.
Bolałek, J.
Powiązania:
https://bibliotekanauki.pl/articles/117018.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Baltic Sea
coastal zone
Port of Gdynia
Port of Gdańsk
Opis:
Organotin compounds (OTC), as well as metals, are toxic to many organisms. Even at very low concentrations OTC and metals can have several negative effects. The paper discusses key issues relating to the location of harbours in the coastal zone (including near the river mouths and semi‐closed access to the sea) and the pollution of harbour sediments with heavy metals (e.g. zinc, copper, nickel and lead) and organotin derivatives (e.g. butyltin, phenyltin, octyltin, and tricyclohexyltin), using the examples of the Gdańsk and Gdynia ports. The authors have described key spatial factors of the two ports which largely determine sedimentation processes. It has been shown that the heavy metals content in the sediments of the Port of Gdańsk does not exceed the concentration values permitted by Polish law, however, the problem with the establishment of standard concentration levels for organotin derivatives remains.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 1; 11-18
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ammonia and ammonium over the Southern Baltic Sea. Part 2. The origin of ammonia and ammonium over two coastal stations: Gdynia and Hel
Autorzy:
Lewandowska, A.
Falkowska, L.
Beldowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/48111.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
coastal zone
Gdynia
aerosol
ammonium
ammonia
concentration
Hel Peninsula
Baltic Sea
Opis:
Ammonia concentrations in aerosols and ammonium concentrations in the air were measured in the coastal zone of the southern Baltic Sea. The main study area was the Hel Peninsula, where measurements were carried out from December 1997 to March 1998. There was a second such area in Gdynia, where the first measurement period extended from May to December 2000, and the second one lasted from February to May 2001. At the same time, chloride, sulphate and sodium concentrations in the aerosols were determined; meteorological parameters were also measured. Aerosol samples were collected with a filter pack, and the gaseous phase species were collected on denuders. At both stations, the ammonium concentration in aerosols was at least one order of magnitude higher than that of the ammonia in the air samples. It was found that the marine boundary layer always contained ammonium chloride and ammonium sulphate. The presence of ammonium nitrate was detected only when winds were slight and was attributed to local anthropogenic sources. The ammonia concentration related to nitrate increased with rising air humidity and a falling temperature. The contribution of marigenic ions in aerosols was noted at onshore wind of speeds > 3.5 m s−1. In winter as in summer, conditions occurred facilitating light backscattering by a ‘wet’ aerosol, which contained ammonium nitrate and ammonium sulphate in proportions of 2.5:1 and 1:1.
Źródło:
Oceanologia; 2004, 46, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nanoflagellates in the Gdańsk Basin: coexistence between forms belonging to different trophic types
Autorzy:
Rychert, K.
Powiązania:
https://bibliotekanauki.pl/articles/48978.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
coastal zone
mixotrophic form
biomass
nanoflagellate
Baltic Sea
Gdansk Basin
chlorophyll
Opis:
Nanoflagellates are important bacterivores, but their role is often underestimated because forms capable of phagotrophy and containing chlorophyll (mixotrophs) are excluded from analyses. Research conducted in the coastal zone of the Gdańsk Basin (Baltic Sea) revealed seasonal changes in the relationship between the biomasses of small (1–8 μm) nanoflagellates with (NFChl+) and without chlorophyll (NFChl–). Three distinct patterns were distinguished: (i) spring, when the biomass of NFChl+ was lower than that of NFChl–, (ii) summer and autumn, when NFChl+ were dominant (about 90%), and (iii) late autumn and winter, when the prevalence of NFChl+ was lower (71–79%). Additional studies showed the existence of spatial differences in the composition of the nanoflagellate community. These spatial differences were not shaped by freshwater input. The possible importance of mixotrophic forms in the Gdańsk Basin is discussed.
Źródło:
Oceanologia; 2006, 48, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dependence between temperature and clearance rate of Balanion comatum Wulff
Autorzy:
Rychert, K.
Powiązania:
https://bibliotekanauki.pl/articles/47880.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Balanion comatum
Baltic Sea
ciliate
clearance
climate
coastal zone
grazing
marine ciliate
temperature
Opis:
The dependence between temperature and clearance rate of the ciliate Balanion comatum Wulff 1919 was assessed in the coastal zone of the southern Baltic Sea. Five in situ experiments were carried out with the use of wheat starch as a surrogate of food particles. The clearance rate rose from 1.4 to 7.0 μl cell−1 h−1 with a temperature rise from 8 to 19◦C. B. comatum preferred particles of size 1.9–4.4 μm, and the clearance rates calculated for the preferred particles were consistently higher than those measured for the whole range of particles ingested (Wilcoxon’s signed rank test, p = 0.04). The exponential dependence between temperature and clearance rates for preferred particles was statistically significant (R2 = 0.86, p = 0.02) and enabled the Q10 coefficient to be calculated. This amounted to 2.9 and lay within the range of typical values. The linear dependence (also drawn for preferred particles) demonstrated a higher significance (R2 = 0.91, p = 0.02), indicating the linear dynamics of the process.
Źródło:
Oceanologia; 2011, 53, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The history of coastal lakes studies with a special regard to Lake Gardno
Autorzy:
Paturej, E.
Powiązania:
https://bibliotekanauki.pl/articles/84791.pdf
Data publikacji:
2001
Wydawca:
Akademia Pomorska w Słupsku
Tematy:
history
coastal lake
lake
Lake Gardno
Baltic Sea
coastal zone
water exchange
sea water
lake water
Źródło:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2001, 05
1643-0115
Pojawia się w:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A system for the determination of surface water pCO2 in a highly variable environment, exemplified in the Southern Baltic Sea
Autorzy:
Stokowski, M.
Makuch, P.
Rutkowski, K.
Wichorowski, M.
Kulinski, K.
Powiązania:
https://bibliotekanauki.pl/articles/2078920.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
surface water
carbon dioxide
coastal zone
environment change
inorganic carbon
open water
Baltic Sea
Opis:
Measurement of pCO2 in highly dynamic coastal zones such as the southern Baltic Sea presents many challenges. In this study, we designed a system to measure pCO2 and then validated it in a series of laboratory and seagoing tests. The fast response time of the system was shown to provide a better resolution of CO2 system gradients. In the open waters of the Baltic Sea, the accuracy of the pCO2 measurements (±1.3 μatm) met the requirements of the ICOS (±2.0 μatm). In the coastal zone, there was less consistency between pCO2, DIC and pH measurements, suggesting the need to redefine the quality assurance and control requirements for the measurement of pCO2 in dynamic regions.
Źródło:
Oceanologia; 2021, 63, 2; 276-282
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The evolution of the southern Baltic coastal zone
Autorzy:
Mojski, J.E.
Powiązania:
https://bibliotekanauki.pl/articles/47713.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
coastal zone
Holocene
post-glacial topography
forecast
Baltic Sea
evolution
Late Glacial
water level
Opis:
This article discusses the formation and evolution of the coastal zone of the southern Baltic from the decay of the last Scandinavian ice-sheet, which took place some 14 ka BP. During the first 4 ka, the shores of the then southern Baltic basins were shaped under the dominant influence of considerable variations in water level and the young, post-glacial topography emerging from under the ice. Later, until the beginning of the Atlantic transgression, the shores were also unstable, because sea level changes resulting from periodic connections with the World Ocean followed one another in rapid succession. Since that transgression destroyed much of the former shoreline, its reconstruction is at best highly problematical, and in some places no longer possible. The maximum range of the Litorina Sea gave rise to a coastal zone that in many places is to this day quite conspicuous in the local topography and sediments. During the last 4 ka, the shoreline has changed relatively little, thus the present shoreline is largely redolent of the original one. In the coming 100 years or so, the abrasion of the cliffs along the southern Baltic shore will probably accelerate, as will the retrogradation of certain sections of the shoreline, with the result that the shoreline will be less of a straight line than it is at present. Land up to a height of 1 m above sea level will be inundated. The greatest changes in the lie of the shoreline are to be expected in the River Wisła (Vistula) delta and around the Zalew Szczeciński (Oderhaff, Szczecin Lagoon).
Źródło:
Oceanologia; 2000, 42, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Driving forces of sandy sediment transport beyond the surf zone
Autorzy:
Stella, M.
Ostrowski, R.
Szmytkiewicz, P.
Kapinski, J.
Marcinkowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/47878.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
sandy sediment
sediment transport
surf zone
wave-current interaction
roughness
coastal zone
Baltic Sea
Źródło:
Oceanologia; 2019, 61, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of landfast ice on the hydrography and circulation of the Baltic Sea coastal zone
Autorzy:
Merkouriadi, I.
Lepparanta, M.
Powiązania:
https://bibliotekanauki.pl/articles/49047.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Finland Gulf
hydrography
landfast ice
circulation
Baltic Sea
coastal zone
water temperature
salinity
current
Źródło:
Oceanologia; 2013, 55, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kartografia 4D w strefie brzegowej południowego Bałtyku - zadanie państwowej służby geologicznej
Integrated geological mapping of the coastal zone of the southern Baltic Sea - task of the Polish Geological Survey
Autorzy:
Uścinowicz, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/20225724.pdf
Data publikacji:
2023
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
morze Bałtyckie
strefa przybrzeżna
interakcje ląd-morze
mapowanie geologiczne
Baltic Sea
coastal zone
land-sea interactions
geological mapping
Opis:
The research task Geological integrated coastal zone mapping concerns the recognition and visualization of the geological structure of the Polish coastal zone, enriched with the modelling of erosion-accumulation processes, including prediction of changes in the position of the shoreline and identification of geohazards. It has been running since 2012 and implements multi-instrumental research methods. To date, a total length of about 155 km of the Polish coastal zone has been studied in an area of about 621 km 2 . The main results of the work are presented in the form of maps (e.g., lithogenetic, hydrogeological, geohazard), models (e.g., morpho-geological, hydrodynamic, predictive) and specialized analyses (e.g., morphodynamical, slope stability). In general, the work carried out is done for a utilitarian purpose, i.e. aimed at the practical use of environmental information. According to the standards of the Polish Geological Survey, most of the geological data acquired can be geoprocessed.
Źródło:
Przegląd Geologiczny; 2023, 71, 3; 138-144
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Field study of film spreading on a sea surface
Autorzy:
Korinenko, A.E.
Malinovsky, V.V.
Powiązania:
https://bibliotekanauki.pl/articles/49188.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
oil spill
film spreading
sea surface
sea pollution
field study
coastal zone
Baltic Sea
wind speed
temporal dynamics
hydrometeorological parameter
Źródło:
Oceanologia; 2014, 56, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Significance of nutrient fluxes via submarine groundwater discharge in the Bay of Puck, Southern Baltic Sea
Autorzy:
Szymczycha, B.
Klostowska, Z.
Lengier, M.
Dzierzbicka-Glowacka, L.
Powiązania:
https://bibliotekanauki.pl/articles/2079294.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
nutrient flux
nitrogen
phosphorus
submarine groundwater discharge
biogeochemistry
coastal zone
Puck Bay
Southern Baltic Sea
Opis:
In this study, we collected submarine groundwater discharge (SGD) and seawater samples at six sites in the Bay of Puck, in the southern Baltic Sea, in order to estimate the nutrient distribution in groundwater affected areas. In addition, we estimated nutrient fluxes via SGD, including both fresh SGD (FSGD) and recirculated seawater SGD (RSGD), to the entire Bay of Puck. Phosphate (PO43−) concentrations varied significantly among study sites and seasons, while both ammonium (NH4+) and nitrates (NO3−) concentrations varied only seasonally. The N:P ratio indicated P limitation in most of the samples. The estimated seasonal and annual loads, via SGD, of both dissolved inorganic nitrogen (DIN; 9303 t yr−1) and PO43− (950 t yr−1), were the most significant source of nutrients to the Bay of Puck, and notably higher than quantified before (FSGD nutrient loads of 50 t yr−1 and 56 t yr−1 for DIN and PO43−, respectively). The SGD fluxes reported here indicate some of the highest rates of sediment-water fluxes reported in the Baltic Sea. These results suggest that SGD (both FSGD and RSGD) should be considered as source of chemical substances to the marine environment.
Źródło:
Oceanologia; 2020, 62, 2; 117-125
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
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