arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1003.4448physics.geo-ph
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深源地震异常统计机制

Mechanism of Deep-focus Earthquakes Anomalous Statistics

V. D. Rusov, V. N. Vaschenko, E. P. Linnik, S. C. Mavrodiev, T. N. Zelentsova, L. Pintelina, V. P. Smolyar, L. Pekevski

摘要:

NEIC资料分析表明,1993-2006年地球内部深源地震的空间分布具有明显的周期性精细离散结构特征,其周期L=50 km,仅由3.9 - 5.3级地震产生,且仅发生在板块会聚边界上。为了描述这种结构的形成,我们使用了A. Volynskii和S.巴热诺夫该模型的关键属性包括在一个刚性涂层的存在下,一个软的底层。结果表明,在俯冲过程中,板片物质(岩石圈)起刚性覆盖层的作用,上地幔起软基底的作用。在这个模型的框架内,我们得到了上地幔应力的平均值和洋板(岩石圈)和上地幔的杨氏模量的估计。

英文摘要:

Analyzing the NEIC-data we have shown that the spatial deep-focus earthquake distribution in the Earth interior over the 1993-2006 is characterized by the clearly defined periodical fine discrete structure with period L=50 km, which is solely generated by earthquakes with magnitude M 3.9 to 5.3 and only on the convergent boundary of plates. To describe the formation of this structure we used the model of complex systems by A. Volynskii and S. Bazhenov. The key property of this model consists in the presence of a rigid coating on a soft substratum. It is shown that in subduction processes the role of a rigid coating plays the slab substance (lithosphere) and the upper mantle acts as a soft substratum. Within the framework of this model we have obtained the estimation of average values of stress in the upper mantle and Young's modulus for the oceanic slab (lithosphere) and upper mantle.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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