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1.
The characteristic pattern of multiple colored layers in coastal stratified lakes in the process of separation from the White Sea 总被引：1，自引：1，他引：0
Krasnova Elena D. Matorin Dmitry N. Belevich Tatiana A. Efimova Ludmila E. Kharcheva Anastasiia V. Kokryatskaya Natalia M. Losyuk Galina N. Todorenko Daria A. Voronov Dmitry A. Patsaeva Svetlana V. 《中国海洋湖沼学报》2018,36(6):1962-1977
An unusual feature of the saline stratified lakes that were formed due to ongoing postglacial uplift on the White Sea coast is the presence of several differently colored thin layers in the zone with sharp gradients. Colored layers in five lakes at various stages of separation from the sea were investigated using optical microscopy, spectrophotometry, spectrofluorimetry, and photobiology. The upper greenish colored layer located in the aerobic strata of all lakes near the compensation depth of 1% light penetration contains green algae. In the chemocline, another layer, brightly green, red or pink, is dominated by mixotrophic flagellates. Despite the very low light intensities and the presence of H 2 S, active photosynthesis by these algae appears to be occurring, as indicated by high values of the maximum quantum yield of primary photochemistry, electron transport activity, photosynthetic activity of photosystem II, the fraction of active centers, and low values of heat dissipation. In the reduced zone of the chemocline, a dense green or brown suspension of anoxygenic phototrophs(green sulfur bacteria) is located. 相似文献
2.
Oceanology - The article presents data on the composition and abundance of algal flora in the coastal stratified Kislo-Sladkoe Lake (the Karelian coast of the White Sea) after its flushing with... 相似文献
3.
A. N. Voronov 《Environmental Geology》2000,39(5):477-481
The Russian Federation has many aquifers and these possess a wide range of chemical compositions. In Russia about 300 mineral
water sources have been developed as spas and health resorts. More than 150 of them produce bottled mineral water. A brief
historical revue is given. The study of mineral waters in Russia began as far back as the reign of Peter the Great (1682–1725).
It has been prolonged by works of many Russian scientists.
The details of the chemical composition of the different types of Russian mineral waters and some geological aquifer peculiarities
are described. The most widely used classification of mineral waters in Russia is presented. The present condition of these
waters and the government standards laid down for their use are described. Examples of different mineral waters are given.
Received: 14 April 1998 / Accepted: 8 December 1998 相似文献
4.
The Gulf of Finland lies in the eastern part of the Baltic Sea. The surface area is 29,700 km2 and the average depth of the basin is 38 m. Groundwater discharge to the Gulf of Finland equals 0.6 km3/year and this discharge is composed of many different chemical compounds. Groundwater discharge into the Gulf of Finland is dispersal. The coastal area of the Gulf of Finland can be divided into four zones with different geological, hydrogeological and discharge properties. The amount of direct groundwater discharge to the sea may be estimated using several geological and hydrogeological methods. 相似文献
5.
A new fitting technique based on functional partition by simplexes of the nth order is developed to determine ionospheric plasma parameters with spectral measurement data from the Irkutsk incoherent
scatter radar. In this approach, the search for a minimum of a multidimensional functional is reduced to a minimized calculation
of model functions in each iteration. The algorithm also allows simplification of the search-stop criterion. 相似文献
6.
Multidisciplinary studies of the separating lakes at different stage of isolation from the White Sea performed in March 2012 总被引：1，自引：0，他引：1
7.
Voronov V. P. Gorodetskii E. E. Muratov A. R. Safonov S. S. 《Doklady Earth Sciences》2009,429(1):1411-1413
Doklady Earth Sciences - 相似文献
8.
9.
A. Voronov M. V. Kryukova S. D. Shlotgauer A. N. Kulikov 《Geography and Natural Resources》2016,37(2):123-128
We have defined the goals and objectives of Shantar Islands National park that was established in 2013 in the western part of the Sea of Okhotsk in the Tuguro-Chumikanskii municipal district of Khabarovsk krai. An outline is given of the natural complexes and floral and faunal diversity of terrestrial and coastalmarine ecosystems of Shantar Islands. Their importance is determined for the solution of environmental issues, and the introduction of a differentiated regime for the protection and utilization in the structure of National Park. The primary purpose of the nature reserve zone and the specially protected zone is to ensure the conditions for the preservation of the unique natural complexes along the coast of the Sea of Okhotsk. Within these territories, economic activity and recreational utilization are prohibited. The zones of educational and recreational tourism provide the conditions for spiritual, scientific and educational recreation and imply different modes of visitation. Natural sites are highlighted, which are of interest as touristic resources. The development of touristic activity in the islands of National Park involves creating on the territories of the recreational zone a number of economic facilities and service centers for visitors. Special emphasis is placed on the protection zone for historical sites that includes the chapel in commemoration of the discoverers of Shantar Islands, and the territory of the former plant for whale oil processing. 相似文献
10.
The layer of water-bearing sandstone (PR2 V kt1) named Lower-Kotlin aquifer is widespread in the northwestern part of the Russian platform, within the Moscow Artesian Basin.
It is mostly confined. The aquifer lies directly on the surface of the crystalline basement throughout the basin. The water
mineralization rises from north to south together with the depth of the aquifer. The mineralization growth is mainly caused
by the increase of sodium and chloride contents. Three consequent vertical zones can be marked out: fresh-water zones (<1 g/dm3), brackish-water zone (1–35 g/dm3) and brine zone (>35 g/dm3). Each of these zones has specific regularities of variation of chemical composition. The role of each component is different
for waters of each zone. The aquifer is actively exploited—for public water supply and bottling in the north and for mineral
water treatment in the south. Within St. Petersburg, this water is used for technical purposes of industry. There are some
health resorts and spas in St. Petersburg Region, such as Sestroretsk, Peterhof, Luga, which use the mineral water of the
Lower-Kotlin aquifer. A number of bottling plants produce bottled mineral water. Wide regional location and peculiarities
of chemical composition of the Lower-Kotlin aquifer cause the possibility of the organization of many other spas and health
resorts near St. Petersburg. 相似文献