Towards identification of areas of reduced risk in the Gulf of Finland, the Baltic Sea

Proceedings of the Estonian Academy of Sciences

Nicole Delpeche¹  Bert Viikmäe¹  Kai Myrberg¹  Tarmo Soomere¹ 

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关键词: pollution transport;    risk analysis;    currents;    hydrodynamic modelling;    Gulf of Finland;    Baltic Sea;   

DOI  :  10.3176/proc.2010.2.15

学科分类：化学（综合）

来源: Teaduste Akadeemia Kirjastus

【 摘 要 】

A Lagrangian trajectory model, TRACMASS with the use of velocity fields calculated by the Rossby Centre (Swedish Hydrological and Meteorological Institute) circulation model, is employed to analyse trajectories of current-driven surface transport in the Gulf of Finland, the Baltic Sea, for the period of 1987–1991. Statistical analysis of trajectories is performed to calculate a map of probabilities for adverse impacts released in different sea areas to hit the coast. There is a clearly defined curve (equiprobability line) in the western part of the gulf from which the chances of the propagation of adverse impacts to either of the coasts are equal. The current-driven propagation of tracers from a wide area (of reduced risk) to the coast in the central and eastern parts of the gulf is unlikely within about three weeks. A safe fairway in terms of coastal protection goes over the equiprobability line and the area of reduced risk.

【 授权许可】

Unknown