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Nadezhda Valcheva

2 linked publication records · Bulgarian Academy of Sciences

Author: Nadezhda Valchevaclear all
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24th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2024, Water Resources. Forest, Marine and Ocean Ecosystems, Vol 24, Issue 3.1
Publication

BLACK SEA THERMOHALIN STRATIFICATION: PARTICULARITY AND RECENT CHANGES

(STEF92 Technology, 2024-11-01, Nadezhda Valcheva)

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The Black Sea hydrological regime is impacted by external factors, which exerts effect on the sea surface in the process of interaction with the atmosphere and those confined to the lateral borders. The most pronounced features of the Black Sea thermohaline structure are large vertical contrasts in salinity (5 psu), temperature (20-C) and density (7 kg m-3); well-defined vertical asymmetry; existence of a cold intermediate layer during the warm half of the year with an absolute vertical temperature minimum, below ...

Hydrology and Water Resources2024
SGEM International Multidisciplinary Scientific GeoConference- EXPO Proceedings; 23rd SGEM International Multidisciplinary Scientific GeoConference Proceedings 2023, Water Resources. Forest, Marine and Ocean Ecosystems, Vol 23, Issue 3.1
Publication

SPATIAL AND MULTIANNUAL ALTERATION OF WAVE EXPOSURE ALONG THE BULGARIAN COAST AS INFERRED BY NUMERICAL MODELLING OF WAVE ENERGY TRANSPORT

(STEF92 Technology, 2023-10-01, Nikolay Valchev, Nataliya Andreeva, Bogdan Prodanov, Nadezhda Valcheva, Petya Eftimova)

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Knowledge of the coastal hydrodynamics, in particular the storm induced waves, is essential for management of the extremely vulnerable coastal environment. There, wave processes dominate surge, coastal currents, sediment transport and species distribution. Therefore, it is important to have a detailed insight into the exposure of different coastal areas to wave action. The study proposes a wave exposure classification of the Bulgarian Black Sea coast according to wave climate conditions as required by the Water Fr...

Hydrology and Water Resources2023
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