Aeolian processes and forms development on coast of Ukraine
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Дата
1999
Автори
Науковий керівник
Укладач
Редактор
Назва журналу
ISSN
E-ISSN
Назва тому
Видавець
Анотація
The length of the Black and Azov Seas within Ukraine are 2835 km,
from the Danube delta in the West to the Kryvaya spit in the East. Aeolian
processes and relief forms are spread on sandy spits, barriers, terraces.
They occupy almost 703 km of Ukrainian shore length, or 43.2% in
total. Acute sediment deficit and prevailing of seaward winds by energy
determine the small size of aeolian forms, their spreading as separate
hearths and discontinuous ridges. As spits and barriers are very narrow
(up to 100-250 m), aeolian forms being very low (usually 1-2 m, maximum
not over 5 m high). During gales, 1-2 times a year waves overflow
the spit or barrier on their dorsal side. Such phenomenon determines
very close interaction of all elements on accumulative form surface, in
contrast to these coasts where dunes are high and of great width. Besides
the total sediment deficit, direction of prevailing winds and accumulative
forms sizes, aeolian processes are influenced by composition and humidity
of sediments, thickness of dry sand layer, density and height of vegetation,
the distance of wind momentum over sandy surface, duration and
reoccurence of wind action. Sediment supply in the coastal zone very often
does not influence the size of coastal dunes: retreating shores can
have in themselves bigger shore dunes than accumulative ones.
Опис
Ключові слова
Aelian processes, Sedimentary balance, Black and Azov coastal zone, Ukraine
Бібліографічний опис
Geogr Fis Dinam Quat