﻿ 地震分布规律研究(2)

# 地震分布规律研究(2)Study on the Law of Seismic Distribution (2)

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.

1. 引言

2017年11月18日，西藏林芝发生了6.9级地震，引起笔者 [2] 的极大关注。这次地震仍然发生在青藏高原斜坡地带，与我们前文 [1] 研究的结论：中国大地震多数发生在喜马拉雅山与青藏高原周边斜坡地区、环太平洋周边斜坡地带及陆地板块断裂带，比较吻合。针对青藏高原周边斜坡地区更深入的研究，让我们找到了更加细致的规律：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。

2. 中国大地震分布数据处理

2.1. 青藏高原上斜坡大地震发生地近似一条直线

$y=1.5089x+49.721,{R}^{2}=0.9629,R=0.9813,n=6$

Table 1. The latitude and longitude of strong earthquake occurred in Line 2

Figure 1. The linear regression of latitude and longitude of the level 6 above earthquakes occurred in the slope at the Qinghai-Tibet Plateau and Inner Mongolia grassland (Line 2)

Figure 2. The parallel straight line of the earthquake occurred in China

Table 2. The altitude contrast of several places of line 1 and line 2

2.2. 青藏高原大地震上斜坡线与下斜坡线近似平行

3. 讨论

3.1. 平面地图直线与经纬度直线不完全等同

3.2. 北半球比南半球地震多之因讨论

4. 结论

[1] 韩谢, 胡文祥. 地震分布规律研究[J]. 交叉科学快报, 2018, 2(1): 1-7.
https://doi.org/10.12677/isl.2018.21001

[2] 中国科技新闻网. 胡文祥: 居高声自远非是藉秋风——记我军知名航天军事医药学及交叉科学专家胡文祥教授[EB/OL]. http://www.zgkjxww.com/yyjk/1506418541.html, 2017-10-09.

[3] 李四光. 地质力学概论[M]. 北京: 科学出版社, 1973.

[4] 中国地震局. 历史地震目录[EB/OL]. http://www.cea.gov.cn/publish/dizhenj/468/496/index.html, 2017-12-18.

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