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International Journal of Geography and Geology

February 2017, Volume 6, 2, pp 26-31

Technogenic Transformations of Sea Coasts on the Example of the Baltic Sea

N.A. Bogdanov

,

A.N. Paranina

N.A. Bogdanov 1

A.N. Paranina 2

  1. Institute of Geography, Russian Academy of Sciences, Moscow Russia 1

  2. Herzen State Pedagogical University of Russia, St. Petersburg Russia 2

Pages: 26-31

DOI: 10.18488/journal.10/2017.6.2/10.2.26.31

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Article History:

Received: 01 October, 2016
Revised: 22 October, 2016
Accepted: 01 November, 2016
Published: 08 November, 2016


Abstract:

Natural and technogenic factors of violation of natural development of the Liepaja sandy rerash in Southeast Baltic are considered. Along coast for many years there has been a stream of substance and energy, unidirectional to the North. At the beginning of the 20th century after the reconstruction of the Russian port of Libava and lengthening of piers for more than 2 km, a stop of sea deposits along the coast appeared. It caused catastrophic local washout of the coast and bottom. In result, territorial losses, beach titanium-zirconium rerash, different types of pollution appeared. By a research it was established: 1. Rate of abrasion (20th century the coast receded to 200 m); 2. Formation and dynamics of the centers of concentration of heavy minerals, is defined amount of the useful ore minerals in a productive size of beach sands (0,2-0,25 mm, an ilmenite, a magnetite, zircon, rutile, a monocyte, leucoxene; 74% or 1523 kg/m3); 3. Major factors of change of a condition of coast and bottom of the sea. Also an assessment of consequences is given to events of World War II and on the Chernobyl NPP. Illustrations of the article show localization of concentrates of heavy minerals in a ledge of washout of the coast and on the beach, and also structure of mean annual coastal streams of substance and wave energy in technogenic morpholytho-dynamic anomaly at the port of Liepaja.
Contribution/ Originality

Keywords:

Technogenic streams, Destruction of coast, Pollution, Ecological state, Baltic sea, Port of Liepaja.

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Funding:

This study received no specific financial support.

Competing Interests:

The authors declare that they have no competing interests.

Acknowledgement:

All authors contributed equally to the conception and design of the study.

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