Long-term variations of wind and wave conditions in the coastal regions of the Black Sea

2016 ◽  
Vol 84 (1) ◽  
pp. 69-92 ◽  
Author(s):  
Adem Akpınar ◽  
Bilal Bingölbali
Keyword(s):  
Black Sea ◽  
The Black Sea ◽  
Coastal Regions ◽  
Wave Conditions ◽  
Long Term Variations

Morphology and Pipeline Design Through a Dynamic Landfall Area: The Black Sea Pipeline Case

2002 ◽  
Author(s):  
Z. Chen ◽  
Marco Venturi ◽  
R. Bijker
Keyword(s):  
Sediment Transport ◽  
Environmental Impact ◽  
Black Sea ◽  
Morphological Changes ◽  
The Black Sea ◽  
Burial Depth ◽  
Short Term ◽  
Pipeline Route ◽  
Long Term Variations

The Blue Stream pipeline project is a gas transportation system for the delivery of processed gas from a gas station in the southern Russia across the Black Sea to Ankara, Turkey. The Turkish landfall of the offshore pipeline in the Black Sea is located near Samsun, see Figure 1 for the pipeline route. One of the main aspects of the design of pipeline through a morphologically dynamic area such as landfall is the required burial depth (Chen et al, 1998, 2001 and Bijker et al 1995). The burial depth is the result of an optimisation between: • safety of the pipeline (which often requires a large burial depth), and • environmental impact and trenching costs (a small burial depth means less dredging and less environmental impact). This paper presents a method of predicting the future extremely low seabed level in a morphologically dynamic landfall area, which is required to determine the burial depth of the pipeline. Both short term and long term coast evolution were assessed to quantify the expected lowest seabed level along the pipeline route in the landfall area during the pipeline lifetime of 50 years. The results were used to determine the required pipeline burial depth. The long term morphological changes originate from long term variations in the morphological system (e.g. river input), gradient in the longshore sediment transport and long term variations in the hydrodynamic conditions. The short-term morphological changes originate from beach profile variations due to cross-shore sediment transport as a result of seasonal and yearly variations in the wave and current conditions. Numerical modelling was applied to compute the longshore and cross-shore sediment transport rates and the resulting coastline evolution and cross-shore profile evolution. The longshore transport model was validated using the available data on the coastline changes in the past 20 years, which was derived from the satellite images. The 50-year lowest seabed level has been determined as the sum of the coastline retreat and the cross-shore evolution in the next 50 years.

Long-term variations of the location of the upper boundary of the hydrogen-sulphide zone in the Black Sea

2001 ◽  
Vol 11 (3) ◽  
pp. 249-258
Author(s):  
A. M. Suvorov ◽  
A. Kh. Khaliulin ◽  
E. A. Godin
Keyword(s):  
Black Sea ◽  
Hydrogen Sulphide ◽  
The Black Sea ◽  
Long Term Variations ◽  
Upper Boundary

Long-term variations of the Black Sea dynamics and their impact on the marine ecosystem

2016 ◽  
Vol 163 ◽  
pp. 80-94 ◽  
Author(s):  
Arseny A. Kubryakov ◽  
Sergey V. Stanichny ◽  
Andrey G. Zatsepin ◽  
Viacheslav V. Kremenetskiy
Keyword(s):  
Black Sea ◽  
Marine Ecosystem ◽  
The Black Sea ◽  
Long Term Variations

Intraannual and long-term variations of the carbonate system of the aerobic zone in the black sea

2011 ◽  
Vol 20 (6) ◽  
pp. 435-450
Author(s):  
O. G. Moiseenko ◽  
S. K. Konovalov ◽  
O. N. Kozlovskaya
Keyword(s):  
Black Sea ◽  
The Black Sea ◽  
Carbonate System ◽  
Aerobic Zone ◽  
Long Term Variations

Oithona davisae: naturalization in the Black sea, inter-annual and seasonal dynamics, effect on the structure of the planktonic copepod community

2019 ◽  
Vol 59 (6) ◽  
pp. 1008-1015
Author(s):  
A. D. Gubanova ◽  
O. A. Garbazey ◽  
D. A. Altukhov ◽  
V. S. Mukhanov ◽  
E. V. Popova
Keyword(s):  
Black Sea ◽  
Coastal Waters ◽  
Native Species ◽  
Significant Decline ◽  
Acartia Tonsa ◽  
The Black Sea ◽  
Copepod Community ◽  
Oithona Davisae ◽  
Sevastopol Bay

Long-term (20032014) routine observations of zooplankton in Sevastopol Bay (the Black Sea) have allowed the naturalization of the invasive copepod Oithona davisae to be studied in the Black Sea coastal waters. Inter-annual and seasonal variability of the species and their impact on the native copepod community have been analyzed. The invasion of O. davisae and their undoubted dominance in terms of abundance were shown to alter the community structure but, at the same time, the abundances of the native species did not decrease, excepting the Black Sea earlier invader Acartia tonsa. A significant decline in A. tonsa numbers over the stages of O. davisae establishment and naturalization provided evidence of competition between the species. O. davisae have been demonstrated to gain competitive advantage over A. tonsa, that ensured their fast dispersal in the Black Sea, acclimatization in the new habitat and the successful competition over native species.

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