FLOW OF WATER AND SUSPENDED MATTER AND SPEED OF EROSION AT THE MURMANSK COAST
https://doi.org/10.7868/S2587556618010101
Abstract
The water flow, module of suspended matter yield and speed of erosion of water basin area have been assessed on the basis of studying multiannual data on the water discharge and concentration of suspended matter in the waterways of the Murmansk coast. It is revealed that total flow varies in the range of 50–80 km3 ‧ y–1; transit and boundary river systems play the leading role in the flow. In recent years there is a decrease in water flow, maximum flow occurs during the spring flood and is 40–60% of the annual flow. It is found that the total flow of suspended matter from the coast is 40 000 to 70 000 t‧ y–1. The low module suspended matter yield (is less than 2 t‧ km–2 ‧ y–1) and slow speed of erosion (is less than 1.5 mkm‧ y–1) are predetermined by a geological-geomorphological structure of the territory and a geographical position of the coast, but do not depend on changes in average annual air temperatures and annual amount of precipitation in the region.
About the Authors
Maksim V. Mityaev
Murmansk Marine Biological Institute, Kola Scientific Center, Russian Academy of Sciences
Russian Federation
Murmansk
Russian Federation
Murmansk
Marina V. Gerasimova
Murmansk Marine Biological Institute, Kola Scientific Center, Russian Academy of Sciences
Russian Federation
Murmansk
Russian Federation
Murmansk
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Graphical Abstract
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1. Average annual erosion rates of water basins of the Murmansk coast | |
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| Type | Исследовательские инструменты | |
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- Total fresh water flow from the Murmansk coast ranges from 50 to 80 km3∙per year.
- Total solid flow from the Murmansk coast is estimated at 40–70 thous. t per year.
- The rate of erosion of the catchment areas of the Murmansk coast does not exceed 2 μm per year.
- The low rate of erosion is predetermined by the geological-geomorphologic structure of the territory and the geographic location of the region, but does not depend on climatic changes.
Review
For citations:
Mityaev M.V., Gerasimova M.V. FLOW OF WATER AND SUSPENDED MATTER AND SPEED OF EROSION AT THE MURMANSK COAST. Izvestiya Rossiiskoi Akademii Nauk. Seriya Geograficheskaya. 2018;(1):111-128. (In Russ.) https://doi.org/10.7868/S2587556618010101
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