期刊
ESTUARINE COASTAL AND SHELF SCIENCE
卷 54, 期 3, 页码 551-562出版社
ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD
DOI: 10.1006/ecss.2000.0664
关键词
sediment discharge; delta development; shoreline migration; littoral erosion; sediment-starved shelf; Danube deep-sea fan; Danube River; Danube delta; Black Sea
The influence of the river Danube is determinant to the sedimentation of the north-western and western Black Sea area. After 1970, following the building of the Iron Gates dam, the Danube River sediment discharge diminished to 30-40% of its previous value. After a 12000-year evolution, marked by active progradation, the Danube delta has become mainly inactive over the last few decades partly due to interventions of man-made origin. The deficit of sediment influx has lea to the intense erosional processes of the deltaic littoral. On the Black Sea north-western shelf, two main areas (with contrasting sedimentary processes) have been identified: the internal, Danube sediment-fed shelf and the external, sediment-starved shelf. The modern highstand sedimentary history of the north-western Black Sea deep area is marked by the cessation of the Danube deep-sea fan active development. The main depositional units within the north-western Black Sea are described. (C) 2002 Elsevier Science Ltd. All rights reserved.
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