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Title: INTEGRATED ANALYSIS OF SEAWATER INTRUSION DYNAMICS IN THE NORTHERN BLACK SEA COAST OF BULGARIA
INTEGRATED ANALYSIS OF SEAWATER INTRUSION DYNAMICS IN THE NORTHERN BLACK SEA COAST OF BULGARIA

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Olga Nitcheva; Albena Vatralova; Donka Shopova; Polya Dobreva
10.5593/sgem2024v/3.2/s14.24
10.5593/sgem2024v/3.2
1314-2704
978-619-7603-76-7
English
24
3.2
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Marine, Ocean, and Coastal Ecosystems. Blue Carbon
Managing water deficits in coastal areas presents significant challenges amid current climate fluctuations. This study examines the hydrological and water management factors contributing to seawater intrusion along the Bulgarian Black Sea coast. Utilizing data from field monitoring and hydrological model simulations, the research highlights the anthropogenic impacts shaped by the structure and dynamics of water supply. Findings reveal that rainfall levels in the Bulgarian Black Sea coastal region are below the national average. Coupled with excessive groundwater extraction for domestic purposes, this has led to seawater intrusion in the central and northern coastal areas. Over the past 50 years, marine intrusion processes in the area have remained inactive, primarily due to reduced economic and demographic activities following political changes in 1989. However, no significant improvements have been observed. Groundwater levels in the recharge zone, approximately 30 km inland, have risen by 1 meter, but no changes have been recorded in the marine intrusion zone. A decline in spring flow rates in coastal zones and continuous contamination of groundwater with chloride and sodium underscore the severity of the issue. The containment and mitigation of marine intrusion in Northeast Bulgaria require the implementation of unconventional methods. The persistence of this issue emphasizes the urgent need to explore alternative water sources and adopt specific water treatment methods.
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This publication is based upon work from COST Action CA21112 “Offshore freshened groundwater: An unconventional water resource in coastal regions? (OFF-SOURCE)”, supported by COST (European Cooperation in Science and Technology), and the National Science Programme "Environmental Protection and Reduction of Risks of Adverse Events and Natural Disasters", approved by the Resolution of the Council of Ministers № 577/17.08.2018 and supported by the Ministry of Education and Science (MES) of Bulgaria (Agreement № Д01-27/06.02.2024).
conference
https://doi.org/10.5593/sgem2024v/3.2/s14.24
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Proceedings of 24th International Multidisciplinary Scientific GeoConference SGEM 2024
24th International Multidisciplinary Scientific GeoConference SGEM 2024, 27 - 30 November, 2024
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Russian Acad Arts; Turkish Acad Sci.
175-184
27 - 30 November, 2024
website
10068
water deficit, groundwater abstraction, marine intrusion, Bulgarian Black Sea Coast

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