2010 年 2 月 27 日 M = 8.8 智利地震前的地震脉冲

IF 0.9 4区地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS Izvestiya, Physics of the Solid Earth Pub Date : 2024-07-18 DOI:10.1134/S1069351324700447

G. A. Sobolev, I. N. Migunov

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摘要

摘要--我们研究了 2010 年 2 月 27 日发生 8.8 级地震的南美洲西海岸和太平洋邻近地区宽带地震台站附近的地动垂直速度记录。从 2009 年开始，在一些台站的记录中发现了持续数百秒的不对称地震脉冲。这些脉冲发生在安静的天气条件和地磁活动较低的情况下。据信，地震发生前，海洋和大陆岩石圈发生了构造运动。

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Seismic Pulses before the February 27, 2010 M = 8.8 Chile Earthquake

Abstract—We study the records of ground motion vertical velocity in the vicinity of broadband seismic stations on the west coast of South America and in the adjacent region of the Pacific Ocean, where the M_w 8.8 earthquake occurred on February 27, 2010. Starting from 2009, asymmetric seismic pulses lasting several hundred seconds have been detected in records of some stations. These pulses occurred under quiet weather conditions and low geomagnetic activity. It is believed that the earthquake was preceded by tectonic movements in the oceanic and continental lithosphere.

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来源期刊

Izvestiya, Physics of the Solid Earth 地学-地球化学与地球物理

CiteScore

1.60

自引率

30.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Izvestiya, Physics of the Solid Earth is an international peer reviewed journal that publishes results of original theoretical and experimental research in relevant areas of the physics of the Earth''s interior and applied geophysics. The journal welcomes manuscripts from all countries in the English or Russian language.