2016-2017年雅库特地震活动

S. Shibaev, W. Geissler, B. Kozmin, R.M. Tuktarov, A. Makarov
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引用次数: 1

摘要

根据GS RAS雅库特分站23个地震台站的数据,2016-2017年对萨哈共和国(雅库特)领土进行了地震活动监测。在此期间,记录到震级KR≥7.1 (M≥1.7)的地震超过800次。这比2015年(N=567)有所增加,这是由于工作时间间隔延长至2年。震中位于大型岩石圈板块之间的相互作用区:欧亚板块和北美板块位于东北部和北极地区,欧亚板块和阿穆尔河板块位于雅库特南部地区。这些事件群包括两个扩展的地震带(北极-亚洲和贝加尔湖-斯坦诺沃伊)。在震中地图上,这些区域显示为南部从奥列克马河到鄂霍次克海的连续地震带,以及东北部和北极的拉普捷夫海和鄂霍次克海之间的独立地震群和地震群。最高的地震活动发生在Olekma地区、Stanovoy山脊和Aldan高地(南雅库特)以及Chersky山脊和Laptev海(东北部)。给出了2016年8月至2017年12月勒拿河三角洲局部地震活动表现的信息。2016-2018年,俄德联合项目“拉普捷夫海地区的地震活动和新构造”(SIOLA)下的25个临时现场自动站运行。本文考虑了北极地震在勒拿河下游的空间、时间、深度分布及其与活动构造的联系。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
SEISMICITY of YAKUTIA in 2016–2017
According to the data of 23 seismic stations of the Yakutia branch of GS RAS, the seismicity monitoring of the territory of the Republic of Sakha (Yakutia) was carried out for 2016–2017. During this period, more than 800 earthquakes with an energy class of KR≥7.1 (magnitude M≥1.7) were registered. This is somewhat more than in 2015 (N=567) and is due to the extension of the time interval of work up to 2 years. The epicenters were located in the zones of interaction between large lithospheric plates: the Eurasian and North American in the Northeastern and Arctic regions, as well as the Eurasian and Amur in the southern regions of Yakutia. The clusters of these events comprised two extended (Arctic-Asian and Baikal-Stanovoy) seismic belts. On the map of epicenters, these zones are displayed as a continuous strip of earthquakes from the Olekma River to the Sea of Okhotsk in the south and in the form of separate groups and clusters of earthquakes between the Laptev and Okhotsk Seas – in the northeast and in the Arctic. The highest seismic activity was noted in the Olekma area, the Stanovoy Ridge and the Aldan Highlands (Southern Yakutia) and the Chersky Ridge and Laptev Sea (in the North-East). Information on the manifestations of local seismicity in the Lena River Delta, where from August 2016 to December 2017 is given. 25 temporary field automatic stations under the joint Russian-German project "Seismicity and neotectonics of the Laptev Sea region" (SIOLA) in 2016–2018 operated. The first results of the distribution of Arctic earthquakes in the lower reaches of the Lena River in space, time, by depth and their connection with active tectonics are considered.
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