Seismic Waves Penetrating the Earth’s Core: Analysis of Parameter Variations

IF 1.2 4区地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY

Russian Geology and Geophysics Pub Date : 2023-12-19 DOI:10.2113/rgg20234635

V. Ovtchinnikov, O. Usoltseva

引用次数: 0

Abstract

––The wavefield structure is studied from explosions within the Mururoa atoll based on seismic records from four stations (BCAO, KAAO, GRFO, BRVK) located at distances 152.1º, 152.4º, 143.6º, 141.7º, respectively. The cross-correlation analysis was used as the main tool of the similarity of explosion seismograms conducted at different times. It has been concluded that changes in correlation similarity in time are reconcilable with the hypothesis of differential rotation of the Earth’s inner core in the period from 1977 to 1991. The evidence of structural anomalies not only in the inner core but also in the outer core has been demonstrated.

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穿透地心的地震波：参数变化分析

--根据分别位于距离152.1º、152.4º、143.6º和141.7º的四个台站（BCAO、KAAO、GRFO、BRVK）的地震记录，研究了Mururoa环礁内爆炸的波场结构。交叉相关分析被用作不同时间爆炸地震图相似性的主要工具。得出的结论是，随着时间的推移，相关性相似度的变化与 1977 年至 1991 年期间地球内核不同旋转的假说是一致的。有证据表明，不仅内核存在结构异常，外核也存在结构异常。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Russian Geology and Geophysics 地学-地球科学综合

CiteScore

2.00

自引率

18.20%

发文量

审稿时长

4-8 weeks

期刊介绍： The journal publishes original reports of theoretical and methodological nature in the fields of geology, geophysics, and geochemistry, which contain data on composition and structure of the Earth''s crust and mantle, describes processes of formation and general regularities of commercial mineral occurrences, investigations on development and application of geological-geophysical methods for their revealing. As to works of regional nature, accelerated publication are available for original papers on a variety of problems of comparative geology taking into account specific character of Siberia, adjacent Asian countries and water areas. The journal will also publish reviews, critical articles, chronicle of the most important scientific events, and advertisements.