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Groundwater discharge into the Gulf of Finland is examined. Qualitative and quantitative estimates of groundwater runoff are given. It is established that, notwithstanding the relatively low rate of groundwater runoff, it has an essential effect on the environmental state of the coastal zone of the gulf. 相似文献
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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