Analysis of hydrometeorological conditions in the south Baltic Sea during the stormy weather on 27th November, 2016

Zeszyty Naukowe Akademii Marynarki Wojennej ◽

10.5604/01.3001.0010.4062 ◽

2017 ◽

pp. 15-30

Author(s):

Czesław Dyrcz

Keyword(s):

Baltic Sea ◽

Atmospheric Pressure ◽

Sea Water ◽

The South ◽

Wind Force ◽

Pressure System ◽

Coast Line ◽

Stormy Weather ◽

Low Pressure System ◽

The Baltic

The paper presents results of research concerning hydrological and meteorological conditions during the stormy weather on 27th November, 2016 in the South Baltic Sea and over the Polish coast. The wind which occurred the South Baltic Sea at that time reached the force of 7 Beaufort degree and in gusts 8 to 9 Beaufort degree. The south part of the Baltic Sea was affected by the low pressure system (981 hPa) which the centre was situated in South Finland and Northwest Russia. Some destroys were observed on the Polish coast line and in ports of the Gdansk Bay. The analyses is concerned on the wind force, the wind direction, the atmospheric pressure and the sea water level in some places of the Polish coast line and especially in the Gdansk Bay.

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Holocene diatom biostratigraphy of the SW Gulf of Gdańsk, Southern Baltic Sea (part III)

Oceanological and Hydrobiological Studies ◽

10.2478/v10009-008-0017-x ◽

2008 ◽

Vol 37 (4) ◽

Cited By ~ 6

Author(s):

Małgorzata Leśniewska ◽

Małgorzata Witak

Keyword(s):

Baltic Sea ◽

The South ◽

Gulf Of Gdańsk ◽

The Baltic Sea ◽

Southern Baltic Sea ◽

Gulf Of Gdansk ◽

Southern Baltic ◽

The Baltic ◽

Palaeoenvironmental Changes

Holocene diatom biostratigraphy of the SW Gulf of Gdańsk, Southern Baltic Sea (part III)The palaeoenvironmental changes of the south-western part of the Gulf of Gdańsk during the last 8,000 years, with reference to the stages of the Baltic Sea, were reconstructed. Diatom analyses of two cores taken from the shallower and deeper parts of the basin enabled the conclusion to be drawn that the microflora studied developed in the three Baltic phases: Mastogloia, Littorina and Post-Littorina. Moreover, the so-called anthropogenic assemblage was observed in subbottom sediments of the study area.

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Associations of Sphagnum rubellum Wils. on the bogs of the south-east part of Baltic region

Vegetation of Russia ◽

10.31111/vegrus/2003.05.50 ◽

2003 ◽

pp. 50-61 ◽

Cited By ~ 1

Author(s):

V. A. Smagin ◽

M. G. Napreenko

Keyword(s):

Baltic Sea ◽

Plant Cover ◽

Karelian Isthmus ◽

Baltic Region ◽

The South ◽

The Baltic Sea ◽

Kaliningrad Region ◽

The Baltic ◽

Typical Habitat ◽

New Syntaxa

The paper characterizes the 3 associations comprising plant communities with Sphagnum rubellum in the south-eastern part of the Baltic region. The new syntaxa differ from each other both in their floristic characters and the pronounced affinity to definite regional mire types and particular habitats. The ass. Drosero-Sphagnetum rubelli is typical of the relatively most thorough ranges. It is observed from the Kaliningrad region to the Karelian Isthmus and, according to the published reference, occurs even throughout the whole area around the Baltic Sea. Its most typical habitat is that of margins of mire lakes and pools. The ass. Eriophoro-Sphagnetum rubelli occurs in central plateaus of convex plateau-like bogs, typical of the areas adjacent to the Baltic Sea coast. It occupies extended flat mire ecotopes with the water level 0.2–0.25 m deep. The ass. Empetro-Sphagnetum rubelli is characteristic of the retrogressive complex in the convex bogs of the East-Baltic Province. It is mostly observed along the coast of the Gulf of Finland. Its stands are rather dynamic and unstable in both space and time. The presence of communities comprised by these 3 associations is an important vegetation character of the series of regional mire types. Assuming an association level of the respective syntaxa seems rational for the purposes of adequate reflection of plant cover diversity.

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ACCUMULATION OF PLASTIC FRAGMENTS AND MICROPLASTICS ON THE BEACHES IN THE SOUTH-EAST BALTIC SEA

Proceedings of International Conference "Managinag risks to coastal regions and communities in a changinag world" (EMECS'11 - SeaCoasts XXVI) ◽

10.21610/conferencearticle_58b4315a71306 ◽

2017 ◽

Author(s):

Lilia Khatmullina ◽

Elena Esiukova ◽

Elena Esiukova

Keyword(s):

Baltic Sea ◽

Size Range ◽

Anthropogenic Pollution ◽

The South ◽

The Baltic Sea ◽

Quantitative Distribution ◽

Sediment Sampling ◽

Beach Sediments ◽

Kaliningrad Region ◽

The Baltic

The sediment sampling from different areas of the beaches in the south-eastern part of the Baltic Sea (in Kaliningrad region) was executed for the purpose of studying the quantitative and qualitative composition of the microplastics particles (range 0.5-5 mm). Preference is given to those beaches that are exposed to maximum anthropogenic pollution. From June, 2015 to January, 2016, there were 14 expeditions along the coastline of the Baltic Sea (in Kaliningrad region) to collect experimental materials. The majority of samples were collected on the most recent flotsam deposited at “wracklines”, in the supralittoral zone. The primary examination of those samples revealed the presence of abundant microplastic particles of the required size range (0.5-5 mm). Quantitative distribution of microplastics in beach sediments was obtained in milligrams per gram of sediment and milligrams per m2: on average 0.05-2.89 (mg per gram of sediment) and 370-7330 (mg per m2), accordingly.

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DNA Markers Reveal Genetic Associations among 11,000-Year-Old Scots Pine (Pinus sylvestris L.) Found in the Baltic Sea with the Present-Day Gene Pools in Lithuania

Forests ◽

10.3390/f12030317 ◽

2021 ◽

Vol 12 (3) ◽

pp. 317

Author(s):

Darius Danusevičius ◽

Jurata Buchovska ◽

Vladas Žulkus ◽

Linas Daugnora ◽

Algirdas Girininkas

Keyword(s):

Baltic Sea ◽

Scots Pine ◽

Sea Water ◽

Pcr Amplification ◽

Balkan Peninsula ◽

Gene Pools ◽

Genetic Associations ◽

The Baltic Sea ◽

Assignment Probability ◽

The Baltic

We aimed to extract DNA and amplify PCR fragments at the mitochondrial DNA Nad7.1 locus and 11 nuclear microsatellite loci in nine circa 11,000-year-old individuals of Scots pine found at the bottom of the Baltic sea and test the genetic associations with the present-day gene pool of Scots pine in Lithuania. We followed a strict anticontamination protocol in the lab and, simultaneously with the aDNA specimens, tested DNA-free controls. The DNA was extracted by an ATMAB protocol from the ancient wood specimens sampled underwater from Scots pine stumps located circa 20–30 m deep and circa 12 km ashore in western Lithuania. As the references, we used 30 present-day Lithuanian populations of Scots pine with 25–50 individuals each. The aDNA yield was 11–41 ng/μL. The PCR amplification for the mtDNA Nad7.1 locus and the nDNA loci yielded reliable aDNA fragments for three and seven out of nine ancient pines, respectively. The electrophoresis profiles of all the PCR tested DNA-free controls contained the sizing standard only, indicating low likelihood for contamination. At the mtDNA Nad7.1 locus, all three ancient Scots pine individuals had the type A (300 bp) allele, indicating postglacial migration from the refugia in Balkan peninsula. The GENECLASS Bayesian assignment tests revealed relatively stringer and consistent genetic associations between the ancient Scots pine trees and the present-day southern Lithuanian populations (assignment probability 0.37–0.55) and several wetlands in Lithuania. Our study shows that salty sea water efficiently preserves ancient DNA in wood at the quality levels suitable for genetic testing of trees dated back as far as 11,000 years before present.

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Modeling Transit Flow Through Port Gates and Connecting Channel in Baltic Sea—Liepaja Port—Liepaja Lake System

Frontiers in Marine Science ◽

10.3389/fmars.2021.657721 ◽

2021 ◽

Vol 8 ◽

Author(s):

Vilnis Frishfelds ◽

Juris Sennikovs ◽

Uldis Bethers ◽

Jens Murawski ◽

Andrejs Timuhins

Keyword(s):

Baltic Sea ◽

Sea Level ◽

Sea Water ◽

Lake System ◽

The North ◽

Transit Flow ◽

Trade Channel ◽

Calm Weather ◽

Set Up ◽

The Baltic

This study investigates a water transport features by extending Copernicus Marine Environment Service (CMEMS) to the Liepaja coast-port-channel-lake system with a two-way nested model. The Liepaja lake and Liepaja port are connected by Trade channel. The Liepaja port has three gates—the openings in wave breakers connecting the port aquatory with the Baltic sea. Each of gates has a corresponding dredged channel for securing the navigation. A hydrodynamic model is set up to study the flow and water level in this system. The area of the port gates, port and Trade channel are resolved by 33 m grid. The model results are verified against currents and sea level observations inside/outside port, Trade channel and Liepaja lake. Results and observations show that strong currents occur in the Trade channel in case of rapid sea level change in Baltic sea despite the Trade channel is rather shallow at the connection with Liepaja lake. The northern part of the Liepaja lake gets filled with brackish water during storm surge events. The channel has notable alternating current also during a relatively calm weather due to the port seiches. Long and narrow shape of the channel implies the Helmholtz type oscillations between the lake and the port with a period in approximately semidiurnal range. Hydrodynamic simulations describe well these oscillations but the phase of hourly scale oscillations in the port may differ in case of weak external forcing. Water exchange is significantly increased by the transit (gate to gate) sea currents. This transit flow usually occurs between South or Central gate and the North gate carrying sea water into the port. Northward flow of the surface layer is more characteristic in the port aquatory due the prevailing south-western winds. There are intense morphological processes at the coastline and underwater slope near the Liepaja port due to a sandy western coastline of Latvia, long fetch of the waves and strong currents at the port gates. Liepaja port is one of the Latvian ports in HywasPort operational service of hydrodynamics, waves and siltation.

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Density and Absolute Salinity of the Baltic Sea 2006–2009

Ocean Science Discussions ◽

10.5194/osd-6-1757-2009 ◽

2009 ◽

Vol 6 (2) ◽

pp. 1757-1817 ◽

Cited By ~ 4

Author(s):

R. Feistel ◽

S. Weinreben ◽

H. Wolf ◽

S. Seitz ◽

P. Spitzer ◽

...

Keyword(s):

Equation Of State ◽

Baltic Sea ◽

Fresh Water ◽

Decadal Variability ◽

Sea Water ◽

Large Area ◽

The Baltic Sea ◽

Sulphate Content ◽

Density Anomaly ◽

The Baltic

Abstract. The brackish water of the Baltic Sea is a mixture of ocean water from the Atlantic/North Sea with fresh water from various rivers draining a large area of lowlands and mountain ranges. The evaporation-precipitation balance results in an additional but minor excess of fresh water. The rivers carry different loads of salts washed out of the ground, in particular calcium carbonate, which cause a composition anomaly of the salt dissolved in the Baltic Sea in comparison to Standard Seawater. Directly measured seawater density shows a related anomaly when compared to the density computed from the equation of state as a function of Practical Salinity, temperature and pressure. Samples collected from different regions of the Baltic Sea during 2006–2009 were analysed for their density anomaly. The results obtained for the river load deviate significantly from similar measurements carried out forty years ago; the reasons for this decadal variability are not yet fully understood. An empirical formula is derived which estimates Absolute from Practical Salinity of Baltic Sea water, to be used in conjunction with the new Thermodynamic Equation of Seawater 2010 (TEOS-10), endorsed by IOC/UNESCO in June 2009 as the substitute for the 1980 International Equation of State, EOS-80. Our routine measurements of the samples were accompanied by studies of additional selected properties which are reported here: conductivity, density, chloride, bromide and sulphate content, total CO2 and alkalinity.

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New data on the palaeo–incisions network of the south–eastern Baltic Sea

Baltica ◽

10.5200/baltica.2014.27.01 ◽

2014 ◽

Vol 27 (1) ◽

pp. 1-14 ◽

Cited By ~ 1

Author(s):

Dmitrij Gerok ◽

Leonora Živilė Gelumbauskaitė ◽

Tom Flodén ◽

Algimantas Grigelis ◽

Albertas Bitinas

Keyword(s):

Baltic Sea ◽

Ice Sheet ◽

The South ◽

The Baltic Sea ◽

Distinctive Features ◽

South Eastern ◽

Fracture Systems ◽

Present Study Area ◽

Eastern Segment ◽

The Baltic

The present study area is located within the south–eastern segment of the Baltic Sea framed by 55o30’–56o30’ N and 19o00’–21o15’E. The area is re-visited with the aim to describe in more detail the geologic prerequisite and development of the palaeo–incisions as well as the timing of their subsequent infillings. The channels form distinctive features in the sedimentary bedrock along the outer limits of pre–Weichselian ice sheets, on average reaching depths into the bedrock of 50 m in the nearshore zone of Lithuania to 100 m along the slope to the Gotland depression in the west. The development of palaeo–incisions systems is governed by the easily eroded late Palaeozoic to Mesozoic bedrock of the present area. Only rare ocurrences of channels have been reported from the middle and lower parts of the Palaeozoic further west in the Baltic Sea. The present investigation supports a mechanism that the channels formed below the ice near the ice sheet margin by melt water erosion under high pressure. The channels start at random where a fracture in the ice develops forming outlet of water contained below the central part of the ice sheet. The channels often merge together in the direction of the ice margin, possibly gradually adapting to previous fracture systems in the bedrock. The investigated incisions were infilled prior to the advance of the Weichselian ice sheet and some have been reopened and repeatedly infilled.

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