The spatial variability of secondary pollution of bottom sediments in the dumping area (model calculations of polygon in the Nakhodka Bay)

I. P. Trubkin; I. A. Nemirovskaya

doi:10.31857/S0435428120020091

The spatial variability of secondary pollution of bottom sediments in the dumping area (model calculations of polygon in the Nakhodka Bay)

I. P. Trubkin, I. A. Nemirovskaya

https://doi.org/10.31857/S0435428120020091

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Abstract

The sediment flow was calculated using the simulation method of wandering marker particles in the water area of the sediment dumping area in the Nakhodka Bay. The relative deformation of the bottom according to the three-dimensional model of currents, wind waves and suspension transformation in the process of sedimentation were taken into account. It was established that the transport of pollution is most likely to occur in a southerly direction towards the open water area of the bay. Carrying out beyond the boundaries of the landfill of the suspension is up to 3.5% of the mass of the total monthly discharged sediments. The sedimentation area on the bottom increases with increasing duration of wind and the rate of change of the burial area reacges the greatest values in the first day.

Keywords

dumping, sediment flow, bottom deformation, average wind direction, secondary pollution, Nakhodka Bay

About the Authors

I. P. Trubkin

All-Russian Scientific Research Institute of Ecology
Russian Federation
Moscow

I. A. Nemirovskaya

Shirshov Institute of Oceanology RAS
Russian Federation
Moscow

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Review

For citations:

Trubkin I.P., Nemirovskaya I.A. The spatial variability of secondary pollution of bottom sediments in the dumping area (model calculations of polygon in the Nakhodka Bay). Geomorfologiya. 2020;(2):102-115. (In Russ.) https://doi.org/10.31857/S0435428120020091