Abstract

The results of space monitoring of an extreme ecological situation near Kamchatka Peninsula, which was responsible for a mass death of hydrobionts in autumn 2020, are presented. The analysis of long-term series of satellite data (>15 000 scenes) on sea surface temperature (from 1981 to 2020) and concentration of chlorophyll a (from 2000 to 2020) showed strong positive temperature anomalies (deviations from a climate norm 3–6°C) in the studied region in July–September 2020, which resulted in anomalous increase in the concentration of chlorophyll a (5–8 times higher than the background values) in the end of September–the beginning of October 2020. As a result, a significantly changed biogenic regime led to harmful bloom of algae (red tide), which caused death of hydrobionts both in Avacha Bay and coastal regions of the entire Kamchatka Peninsula.

中文翻译：

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2020年9月至2020年10月堪察加半岛附近与赤潮有关的环境灾难的空间研究

摘要

介绍了对堪察加半岛附近极端生态状况进行空间监测的结果，堪察加半岛是导致2020年秋季水生生物大规模死亡的原因。对海面温度（1981年至2020年）和叶绿素a浓度（2000年至2020年）的长期卫星数据序列（> 15000个场景）的分析显示，存在强烈的正温度异常（与气候规范3– 2020年7月至9月的研究区域温度为6°C），导致叶绿素a浓度异常增加 在2020年9月底至2020年10月初（比背景值高5-8倍）。结果，显着改变的生物发生机制导致藻类有害繁殖（赤潮），导致水生生物死亡。阿瓦查湾和整个堪察加半岛的沿海地区。