太阳黑子活动周期对中国大陆西部不同震级段地震的影响探讨与分析
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摘要
用快速富里叶变换(FFT)计算得出太阳黑子有11 a、51 a、103 a的优势周期,通过太阳黑子的活跃周期与中国大陆西部(E108°以西)不同震级段地震的活跃周期进行了对比研究,发现从6.5以上地震受太阳黑子的影响相对弱一些,其平均周期为2.7a;而M_s 5.0-6.5受太阳黑子的影响可能相对强一些,其平均周期为11.4 a.分析认为M_s≥6.5地震地周期与太阳黑活跃周期存在倍数关系,M_s5.0-6.5的周期与太阳黑子活跃周期比较相近,计算得出1950年以来地震波能量释放与太阳黑子周期有一定关系,总体表明太阳黑子活动对不同震级地震均有一定影响,但对中强地震的影响要更明显一些.
We educed the sunspot preponderance periods are 11a ,51a and 103a by FFT. Compared the sunspot activity periods to the vary segment magnitude earthquake of the west China. Discovered that M_s≥6.5 impact by sunspot periods is little feebleness, but M_s5.0-6. 5 impact by sunspot is more stronger, the preponderance period is 11.4a. The result show us that the periods of M_s≥6.5 and the sunspot preponderance periods exist multiple relations. The period of the M_s5.0-6. 5 is more consistent to the sunspot preponderance periods. There has some relations between energy release from earthquake and sunspot activity by calculated the events from 1950. We analyzed and conclusion that the activity of the sunspot has many impact on vary segment magnitude earthquake's of west China. But the impact is more evidence to medium-strong earthquakes.
引文
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