Diurnal changes of earthquake activity and geomagnetic Sq-variations
Diurnal changes of earthquake activity and geomagnetic Sq-variations
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DOI：
10.5194/nhess-3-171-2003
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发表时间：
2003-01-01
影响因子：
4.6
通讯作者：
Ruzhin, Y.
中科院分区：
文献类型：
--
作者：
Duma, G.;Ruzhin, Y.
统计分析表明，在许多地震区，地震发生的概率强烈地依赖于一天中的时间，即当地时间（例如Conrad，1909，1932; Shimshoni，1971; Duma，1997; Duma and Vilardo，1998）。这也适用于强烈的地震活动。此外，最近的观测表明，在地震活动随时间变化的地球动力学过程中，涉及到地球磁场的有规律的日变化，通常称为SQ变化（Duma，1996年，1999年）。在这篇文章中，它是试图量化的力量，这是从诱导Sq之间的相互作用，地球岩石圈和区域地球磁场的变化电流，以评估对构造应力场和地震活动的影响。一个可靠的模型，这表明在这个过程中涉及的高能量。SQ-感应的效果进行了比较的大规模电磁实验“Khibiny”（Velikhov，1989），其中一个巨大的人工电流环被激活在巴伦支海的结果。
Statistic analyses demonstrate that the probability of earthquake occurrence in many earthquake regions strongly depends on the time of day, that is on Local Time (e.g. Conrad, 1909, 1932; Shimshoni, 1971; Duma, 1997; Duma and Vilardo, 1998). This also applies to strong earthquake activity. Moreover, recent observations reveal an involvement of the regular diurnal variations of the Earth's magnetic field, commonly known as Sq-variations, in this geodynamic process of changing earthquake activity with the time of day (Duma, 1996, 1999).In the article it is attempted to quantify the forces which result from the interaction between the induced Sq-variation currents in the Earth's lithosphere and the regional Earth's magnetic field, in order to assess the influence on the tectonic stress field and on seismic activity. A reliable model is obtained, which indicates a high energy involved in this process.The effect of Sq-induction is compared with the results of the large scale electromagnetic experiment "Khibiny" (Velikhov, 1989), where a giant artificial current loop was activated in the Barents Sea.