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Wyświetlanie 1-2 z 2
Tytuł:
The natural and anthropogenic features of the coastal zone of the eastern Gulf of Finland
Autorzy:
Spiridonov, M. A.
Zhamoida, V. A.
Powiązania:
https://bibliotekanauki.pl/articles/1187363.pdf
Data publikacji:
2004
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
coastal zone
recent processes
geological history
Gulf of Finland
Opis:
The development of the coastal zone of the eastern Gulf of Finland has a long geological history and depends on the several main factors. The primary configuration of the shoreline is connected with tectonic movements, which even at present are displayed in slow uplifting of the northern coast and slow sinking of the southern one. However, the main features of the recent coastal zone were formed during degradation of the last glacial cover and essentially transformed during post-glacial period of different water bodies’ existence. The processes of the modern morpho- and litho-dynamic are very changeable and expressed in the different accumulative and erosion forms of relief. The anthropogenic activity during last centuries results in local reconstruction of the conditions of existence and development of the coastal zone.
Źródło:
Polish Geological Institute Special Papers; 2004, 11; 71-76
1507-9791
Pojawia się w:
Polish Geological Institute Special Papers
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new map of the Neva Bay bottom sediments and technogenic objects under the result of side-scan sonar profiling
Autorzy:
Spiridonov, M. A.
Ryabchuk, D. V.
Kropachev, Y. A.
Nesterova, E. N.
Zhamoida, V. A.
Vallius, H.
Kotilainen, A.
Powiązania:
https://bibliotekanauki.pl/articles/1204986.pdf
Data publikacji:
2008
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
side-sonar investigations
sedimentary processes
Neva Bay
Opis:
In summer 2004, Department of Marine and Environmental Geology of VSEGEI carried out investigations of the Neva Bay bottom surface east of the St. Petersburg Flood Protective Dam using a side-scan sonar system. The main aim of this experimental work was the creation of a new “factographical” map of bottom sediments and different types of technogenic objects. State geological surveys of the Neva Bay bottom were carried out by VSEGEI in 1987–1989. Besides, geoenvironmental investigations were conducted here in 1993–1995 and 2000–2002. As a result, a set of maps of bottom sediments based on hundreds of sampling stations (both cores and grab-sampler) were compiled. Side-scan investigations of 2004 allowed more exact recognition of the bottom sediment distribution. Furthermore, in some places new data permit to suppose that the sedimentary conditions have changed here during the last decades as a result of high technogenic load, including Flood Protective Dam influence. In summer 2004 there were a joint expedition of the VSEGEI and the Geological Survey of Finland (GTK). Altogether 10 sampling stations from the mud accumulation areas were sampled with a use of Niemisto corer. Cores were sliced in 1 cm samples and analyzed in chemistry laboratory of GTK (Finland) – gamma spectrometry for 137Cs, ICP-AES and ICP-MS, whereupon important results about heavy metals concentration and distribution were received.
Źródło:
Polish Geological Institute Special Papers; 2008, 23; 95-107
1507-9791
Pojawia się w:
Polish Geological Institute Special Papers
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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