地震分布规律研究(2)

Study on the Law of Seismic Distribution (2)

摘要: 本文从近期西藏林芝发生的地震，追溯不同时期西藏墨脱、青海玉树、宁夏海原等地发生的强震，其经纬度回归图接近一条直线(图线2)；而在前文中，我们对发生在唐山、汶川、丽江等地地震的经纬度做了线性回归，得到图线1。结果表明：青藏高原与四川盆地的斜坡地带确实较易发生6级以上强震，而且，上斜坡边缘(图线2)与下斜坡边缘(图线1)发生地震的几率较其他地方更大一些；本次所得图线2与前文所述图线1近似平行。

Abstract: In this paper, the latitude and longitude of recent earthquake happened in Linzhi Tibet and back to different periods occurred in Motuo Tibet, Yushu Qinghai and Haiyuan Ningxia has been analyzed; the linear regression was carried out and close to a straight line (The line 2). In the previous article, we made linear regression on the latitude and longitude of the earthquakes occurred in Tangshan, Wenchuan and Lijiang et al. (The line 1). The results show that strong earthquakes of level 6 above are indeed more likely to occur in the slope between Qinghai-Tibet Plateau and the Sichuan Basin. Moreover, earthquakes are more likely to occur at the edge of the upper slope (The line 2) and the lower slope (The line 1) than other places. And the line 2 is approximately parallel with the line 1 described above.