MORPHODYNAMICS OF THE BAKALSKAYA SPIT OF THE BLACK SEA

Author(s):  
Vladimir Fomin ◽  
Vladimir Fomin ◽  
Ludmila Kharitonova ◽  
Ludmila Kharitonova ◽  
Dmitrii Alekseev ◽  
...  

Studies of shape dynamics of the Bakalskaya Spit based on observation and numerical simulation are carries out. The Bakalskaya Spit is a dynamically active sand formation on the north-west coast of the Crimea Peninsula. Field observations and satellite image analyses showed that the erosion of spit west coast, eastward displacement of spit distal part and separation of distal part from the spit main part are the most significant processes. After the autumn storms in 2010 the isthmus between the distal part of spit and its main part was eroded and had not recovered till now. So the distal part of the Bakalskaya Spit turned into island. Dynamic of sediments depends on wind wave parameters and sea level oscillations. Effect of changing of wind wave direction and storm surge height on erosion and deposition processes in the Bakalskaya Spit region of the Black Sea is studied by using of XBeach numerical model. Dependencies of location and space dimension of erosion and deposition areas of sediments on characteristics of waves and surges are obtained. It is found that the most intensive erosion of spit isthmus occurs in case of wave running from the west in comparison of cases of wave running from the south-west and north-west if there are no surges. Presence of surges may results in increasing or decreasing of erosion process intensiveness depending on wave direction.

Author(s):  
Vladimir Fomin ◽  
Vladimir Fomin ◽  
Ludmila Kharitonova ◽  
Ludmila Kharitonova ◽  
Dmitrii Alekseev ◽  
...  

Studies of shape dynamics of the Bakalskaya Spit based on observation and numerical simulation are carries out. The Bakalskaya Spit is a dynamically active sand formation on the north-west coast of the Crimea Peninsula. Field observations and satellite image analyses showed that the erosion of spit west coast, eastward displacement of spit distal part and separation of distal part from the spit main part are the most significant processes. After the autumn storms in 2010 the isthmus between the distal part of spit and its main part was eroded and had not recovered till now. So the distal part of the Bakalskaya Spit turned into island. Dynamic of sediments depends on wind wave parameters and sea level oscillations. Effect of changing of wind wave direction and storm surge height on erosion and deposition processes in the Bakalskaya Spit region of the Black Sea is studied by using of XBeach numerical model. Dependencies of location and space dimension of erosion and deposition areas of sediments on characteristics of waves and surges are obtained. It is found that the most intensive erosion of spit isthmus occurs in case of wave running from the west in comparison of cases of wave running from the south-west and north-west if there are no surges. Presence of surges may results in increasing or decreasing of erosion process intensiveness depending on wave direction.


The aim of the research is to analyze the problem of anthropogenic influence on the sea coasts, to develop and improve the constructive-geographical foundations of rational nature management for the conservation and possible renewal of natural resources on the north-west coast of the Black Sea. Methods. The main methods used in the preparation process and writing of the article are systematization methods, retrospective, analytical, comparative geographical and historical. Scientific novelty of the article. The fact that the coastal zone of the Black Sea coast is experiencing uncontrolled anthropogenic impacts; this research has improved and developed constructive-geographical foundations for their rational management. Practical value. Developed scientific recommendations are universal. They are very important for the implementation of integrated management of the coastal zone in the country, the optimization of nature management and the preservation of the natural systems on the north-west coast of the Black Sea, in particular, and the entire World Ocean, as a whole. Research results. Intensive development of the coast and consumer economic activity over the past decades has led to the degradation of natural systems. Rational use of natural resources of the coastal zone of the sea assumed the development of foundations that comprehensively take into account the physical-geographical and socio-economic processes, as well as the laws of their development that determine the current state and dynamics of changes in natural systems during their operation. On the basis of a detailed study of domestic and foreign publications related to this topic, the activities of integrated coastal zone management (ICZM) in different countries of the world were analyzed. The foundations and principles for introducing ICZM in Ukraine are highlighted. It has been established that for the development of any projects in the coastal zone of the sea, it is necessary to have a scientific natural rationale from scientists obtained in the process of detailed research. These provisions can be the scientific basis of the relevant legislative framework for the optimization of nature management and spatial planning on the north-west coast of the Black Sea. Well-developed and improved scientific provisions are suitable for correcting the current situation in the direction of higher efficiency on coastаl control. These constructive-geographic foundations can become the basis and the main algorithm for practical implementation of environmental legislation in Ukraine.


Author(s):  
Eleonora P. Radionova

The associations and ecological conditions of the existence of modern diatoms of the North-West (Pridneprovsky), Prikerchensky and Eastern regions of the subtidal zone of the Black Sea are considered. Based on the unity of the composition of the Present and Sarmatian-Meotian diatom flora, an attempt has been made to model some of the ecological c situation of the Late Miocene Euxinian basin.


Author(s):  
Zalina V. Sosranova ◽  
Zalina M. Basieva

The article examines the scale and methods of the anti-Russian military-political activity of British emissaries in the Western Caucasus in the first half of the 19th century. The scientific novelty lies in the fact that for the first time in the work the intelligence activity of British “traveling” agents in the Western Caucasus is subjected to a special study, as an independent, gaining strength way of fighting in international contradictions for the Caucasus. The relevance of the topic of the proposed article seems to us indisputable due to the incompleteness of international rivalry and the eternal Eastern question. Russian Empire in the late 20s — early 30s XIX century. took possession of all legal rights to the North-West Caucasus and outlets to the Black Sea. With its confident military successes and new territorial accessions, Russia threw a serious challenge to the European powers, and especially England, the dominant power on the European continent at that time. One of the most important tasks of England is to nullify all the achievements of Russia in Turkey and prevent its consolidation in the territory of the Western Caucasus. England, adhering to the favorite method of “raking in the heat with someone else’s hands”, and in Circassia is testing its effectiveness. Since the 30s. XIX century. Numerous British agents flooded the Caucasus, turning the Circassians against Russia. The Black Sea coast of the Caucasus has become a place of uninterrupted supply of weapons to the mountaineers. As a result of the work, the author comes to the conclusion that the sources considered in the work can represent a scientific basis for confirming the involvement of Britain in anti-Russian agitation in the Western Caucasus. The uninterrupted supply of weapons to the highlanders organized by British agents helped to maintain military tension and a fighting spirit in Circassia.


2018 ◽  
Vol 24 (2) ◽  
pp. 1382-1387 ◽  
Author(s):  
Syaifulnizam Abd Manaf ◽  
Norwati Mustapha ◽  
Md. Nasir Sulaiman ◽  
Nor Azura Husin ◽  
Mohd Radzi Abdul Hamid

1990 ◽  
Vol 1 (4) ◽  
pp. 271-278 ◽  
Author(s):  
V. I. Klimok ◽  
K. K. Makeshov ◽  
M. V. Pertseva ◽  
V. A. Rybalka

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