Abstract

A study of abrasive rock destruction at different horizons of the littoral zone in Dalnezelenetskaya Bay (Murmansk coast) was carried out. It is revealed that the abrasion rate of coarse-grained material in 2012–2018 on average was 40 ± 4 μm g^–1; the average destruction rate of blocks was 49 ± 4 μm g^–1; boulders, 22 ± 3 μm g^–1. On the whole, in 2012–2018, a decrease was observed in the rate of abrasive destruction of rocks from the upper to the lower littoral horizon. At the upper littoral horizon, air temperature has a great influence on the intensity of rock destruction and the effect of wind waves is weakened. At the lower littoral horizon, the rock abrasion rate largely depends on the speed and direction of the winds and the waves generated by them. Based on an analysis of meteorological data and the rock destruction rate in the lower littoral horizon, it is suggested that in 2014–2015 and 2016–2017, there was an intensification in actual abrasive rock destruction on the Murmansk coast. The data obtained indicate that changes in the oceanographic characteristics of the water mass of the bay have no significant effect on the rate of the abrasion process.

中文翻译：

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2012–2018年摩尔曼斯克海岸沿岸地区的岩石磨损率变化

摘要

对达涅列涅涅茨卡亚湾（摩尔曼斯克海岸）沿岸带不同层位的砂岩破坏进行了研究。结果表明，2012-2018年粗粒材料的平均磨损率为40±4μmg ^–1；块的平均破坏率为49±4μmg ^–1；巨石，22±3μmg ^–1。总体而言，在2012-2018年间，从上到下沿海地层的岩石的磨蚀性破坏率有所下降。在沿海高层地平线上，气温对岩石破坏的强度有很大的影响，而风浪的影响则减弱了。在沿海低层地层，岩石的磨损率在很大程度上取决于风速和风向以及风向所产生的波浪。根据气象数据和沿岸低层岩石破坏率的分析，建议在2014–2015年和2016–2017年，摩尔曼斯克海岸的实际磨蚀性岩石破坏加剧。所获得的数据表明，海湾水团的海洋学特征的变化对磨蚀速度没有明显影响。