The Baltic Ice Lake and Yoldia sea stages, based on data from diatom analysis in the central, south-eastern and eastern Baltic

1995 ◽  
Vol 27 ◽  
pp. 69-72 ◽  
Author(s):  
Meiluté Kabailiené
2018 ◽  
Vol 10 (11) ◽  
pp. 1752 ◽  
Author(s):  
Toma Dabuleviciene ◽  
Igor E. Kozlov ◽  
Diana Vaiciute ◽  
Inga Dailidiene

A detailed study of wind-induced coastal upwelling (CU) in the south-eastern Baltic Sea is presented based on an analysis of multi-mission satellite data. Analysis of moderate resolution imaging spectroradiometer (MODIS) sea surface temperature (SST) maps acquired between April and September of 2000–2015 allowed for the identification of 69 CU events. The Ekman-based upwelling index (UI) was applied to evaluate the effectiveness of the satellite measurements for upwelling detection. It was found that satellite data enable the identification of 87% of UI-based upwelling events during May–August, hence, serving as an effective tool for CU detection in the Baltic Sea under relatively cloud-free summer conditions. It was also shown that upwelling-induced SST drops, and its spatial properties are larger than previously registered. During extreme upwelling events, an SST drop might reach 14 °C, covering a total area of nearly 16,000 km2. The evolution of an upwelling front during such intensive events is accompanied by the generation of transverse filaments extending up to 70 km offshore. An analysis of the satellite optical data shows a clear decline in the chlorophyll-a concentration in the coastal zone and in the shallow Curonian Lagoon, where it drops down by an order of magnitude. It was also shown that a cold upwelling front alters the stratification in the atmospheric boundary layer, leading to a sudden drop of air temperature and near-surface winds.


The Holocene ◽  
2017 ◽  
Vol 28 (5) ◽  
pp. 721-737 ◽  
Author(s):  
Anton Hansson ◽  
Svante Björck ◽  
Katja Heger ◽  
Sofia Holmgren ◽  
Hans Linderson ◽  
...  

Along parts of the Hanö Bay coast in south-eastern Sweden, remains of a submerged landscape can be found down to depths of almost 25 m b.s.l. The coastal landscape was formed during two periods of lowered water levels in the Baltic Basin: the Yoldia Sea and the Initial Littorina Sea stages. In order to reconstruct the local environment and shoreline displacement during the Yoldia Sea and Ancylus Lake stages, sediment sequences were obtained at 4.5, 17.5 and 18.7 m b.s.l. Detailed bathymetric mapping was based on multi-beam echo-sounding while surveillance and sampling of tree remains and archaeological findings were performed through diving. The Yoldia Sea low-stand reached its minimum level at 24–25 m b.s.l. just before 10,800 cal. BP. During the subsequent Ancylus transgression, a slow-flowing river passed through the area, accumulating thick deposits of fine-grained organic sediments in lagoonal basins. The river was surrounded by open woodland dominated by pine. Based on successive flooding of rooted tree stumps, the transgression rate was estimated at 4 cm·yr−1, until the Ancylus high-stand was reached at 5 m b.s.l. at 10,400–10,300 cal. BP. Findings of worked aurochs and beaver bones provide evidence of human presence in the landscape and show the importance of terrestrial resources for their subsistence. These integrated palaeoecological and archaeological investigations demonstrate the importance of submerged landscapes with well-preserved sediment, wood and bone material for our understanding of southern Baltic coastal landscapes and their inhabitants during the Early Mesolithic.


Baltica ◽  
2015 ◽  
Vol 28 (2) ◽  
pp. 179-188 ◽  
Author(s):  
Nerijus Blažauskas ◽  
Algimantas Grigelis ◽  
Leonora Živilė Gelumbauskaitė ◽  
Saulius Gulbinskas ◽  
Sergej Suzdalev ◽  
...  

The article provides a consistent insight into the results and experience related to the implementation of activities fostering the development of marine economy in Lithuania. EU Strategy for the Baltic Sea Region and the Blue Growth concept explicitly focuses on maintenance of the good status of the marine environment of the European seas. Recently developed Lithuanian integrated maritime spatial plan aims to create the favourable conditions for sustainable development of marine economy, and particularly the offshore wind energy. Proposed and tested innovative solutions for selection of new disposal sites as well as handling the dredged soil in ports, contributes to more environmentally sound and economically feasible operations of the south-eastern Baltic Sea ports.


Author(s):  
Ekaterina Badyukova ◽  
Ekaterina Badyukova ◽  
Leonid Zhindarev ◽  
Leonid Zhindarev ◽  
Svetlana Lukyanova ◽  
...  

The paper considers the geological structure and evolution of large barrier-lagoon systems in the eastern and southeastern coasts of the Baltic Sea. The data available on some coastal deltaic plains in the Leningrad Region, Latvia and Lithuania are discussed in some details. The considered materials lead the authors to the conclusion about a unified mechanism of the systems’ development. A considerable rise of the sea level at the Littorina Sea transgression fostered large transgressive bars developing at the margins of deltaic plains and lagoons formation on the surface of these plains.


Author(s):  
Елена Романова ◽  
Elena Romanova

The features of modern landscape Genesis at the regional level in the mainstream of social geography are investigated. A synthetic indicator of socio-economic conditionality of modern landscape Genesis is proposed and on its basis zoning of the territory of Europe, the Baltic macroregion and the South-Eastern Baltic is carried out. Addressed to researchers, graduate students, students of geographical specialties.


Author(s):  
V.I. Kulakov

The article is aimed at tracing the origin of Roman pendants (referred to as ‘charms’ in Baltic archaeology), dating them and, if possible, determining their semantic meaning. The analysis of these artefacts, found among the antiquities from the mouth of the Vistula River and south-eastern Baltic states, leads to the following conclu-sions. Hellenistic glass pendants in the form of amphorisks were supposedly the predecessors of charm pendants in question. In the early Roman time, German masters began to imitate them in the form of amber 8-shaped pen-dants. On the western edge of the Baltic world, these pendants appeared in phase C1b. In the Masurian Lake District, bronze charm pendants of the subtypes Mączyńska 530a, 530 spread somewhat earlier. They were a symbol of the divine power of Donar/Heracles, displaying his club. Pendants in the form of pinheads, occasionally found among the antiquities of the Aesti in the final phase of Roman time, are genetically ascending to these finds. Presumably, they can be associated with Scandinavian two-eyed hollow pendants, which were used to keep incense. In the Merovingian era, the tradition of using these types of pendants among the Prussians faded.


Author(s):  
Ekaterina Badyukova ◽  
Ekaterina Badyukova ◽  
Leonid Zhindarev ◽  
Leonid Zhindarev ◽  
Svetlana Lukyanova ◽  
...  

The paper considers the geological structure and evolution of large barrier-lagoon systems in the eastern and southeastern coasts of the Baltic Sea. The data available on some coastal deltaic plains in the Leningrad Region, Latvia and Lithuania are discussed in some details. The considered materials lead the authors to the conclusion about a unified mechanism of the systems’ development. A considerable rise of the sea level at the Littorina Sea transgression fostered large transgressive bars developing at the margins of deltaic plains and lagoons formation on the surface of these plains.


2019 ◽  
Vol 59 (1) ◽  
pp. 184-186 ◽  
Author(s):  
A. V. Krek ◽  
M. O. Ulyanova ◽  
E. S. Bubnova ◽  
V. A. Krechik ◽  
D. V. Ryabchuk ◽  
...  

In 2017, comprehensive geological, geophysical, hydrological and hydrochemical researches were conducted in the South-Eastern Baltic Sea and the Gulf of Finland. 1775 nautical miles of surveys were conducted using multibeam echosounder and profiler. Surface bottom sediments (156 samples), the upper undisturbed layer of pelitic sediments and bottom water (15 samples), 2 cores were taken. Laboratory analyzes were performed on pH (189), concentration of oxygen (246), suspended matter (286) and oil products (110). Microplastic was also collected in the water (118) and bottom sediments (45). Conducting comprehensive research in the South-Eastern Baltic Sea allowed us to record the weakening of the Major Baltic Inflow effects, followed by changes in the environmental conditions of the region. Geological surveys in the Gulf of Finland expanded the coverage area of the bottom of multibeam surveys and contributed to the refinement of the formation processes of linear and circular transgressions at the bottom.


2019 ◽  
Vol 4 (2) ◽  
pp. 111-114
Author(s):  
A. A. Volodina

Information on the first findings of Gaillona rosea (Roth) Athanasiadis 2016:814 (Aglaothamnion roseum (Roth) Maggs & L’Hardy-Halos 1933:522) in the Russian part of the South-Eastern Baltic is given. Samples of algae in the Russian part of the South-Eastern Baltic along the coast of the Kaliningrad region at depths of 1–15 m were collected by diving method on the north coast of the Sambian Peninsula near Cape Taran and Cape Gvardeysky at the stations confined to hard ground. First samples of G. rosea collected from drifting mats of perennial algae Furcellaria lumbricalis and Polysiphonia fucoides were first registered along the west and north coast of the Sambian Peninsula (Cape Taran) at depths of 1.5–7 m in autumn 2015. The finding of the species in 2015 on the west coast of the Sambian Peninsula is the first registration for the coast of the Gdansk Bay. In July 2016, the species was found in samples at Cape Taran at a depth of 0.5 m. The length of the thalli does not exceed 3 cm. The species was registered with F. lumbricalis and P. fucoides, both in attached communities and in drifting mats. G. rosea is quite common in the Baltic Sea, with the exception of the Gdansk Bay and the northernmost part of the Baltic Sea, where the salinity is low. There is no data available on the abundance of the species in the adjacent Lithuanian waters. The species is rarely registered in the Russian part of the South-Eastern Baltic, and therefore G. rosea is rare in the entire South-Eastern Baltic Sea.


Author(s):  
Angelina E. Shatalova ◽  
Uriy A. Kublitsky ◽  
Dmitry A. Subetto ◽  
Anna V. Ludikova ◽  
Alar Rosentau ◽  
...  

The study of paleogeography of lakes is an actual and important direction in modern science. As part of the study of lakes in the North-West of the Karelian Isthmus, this analysis will establish the dynamics of salinity of objects, which will allow to reconstruct changes in the level of the Baltic Sea in the Holocene.


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