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Transport and accumulation of sediment and contaminants in the Lagoon of Kuršiųmarios (Lithuania) and Baltic Sea 总被引:2,自引:0,他引:2
Olegas Pustelnikovas 《Aquatic Ecology》1994,28(3-4):405-411
In this paper an overview is given of earlier work on transport, deposition AND transformation of suspended matter, and contaminants
(metals, hydrocarbons) in Lithuanian coastal waters as well as in other parts of the Baltic Sea. The Lithuanian river Nemunas
dischargesc. 600.106 kg suspended matter into the Kuršių Marios Lagoon annually, of which two thirds are accumulated in the lagoon. The remainder
is exported to the Baltic Sea through the Klaipéda Strait influencing biological activity in the coastal zone. Sedimentation
rate in Kuršių Marios Lagoon is estimated at 3.2 mm y−1. In the last 50 years the surface area of the lagoon decreased by 0.7 km2 y−1. Concentration profiles of metals and hydrocarbons were measured in the Kuršių Marios Lagoon, the Baltic proper, and in the
Gulf of Finland. Among hydrocarbons both anthropogenic and compounds from natural sources are present. It is argued that correct
interpretation of concentration horizons in sediment may be hampered by various processes,e. g. early sedimentogenesis and diagenesis, and cyclic salinity changes in the Baltic Sea. 相似文献
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