宁夏地震活动相关性与诱发前震的研究
A PRIMARY STUDY ON THE CORRELATION OF THE EARTHQUAES AND INDUCED FORE-SHOCK IN NINGXIA AND ITS NEIGHBORINGS
-
摘要: 本文的研究结果表明,宁夏地震与江苏地震、鄂尔多斯块体其他边缘地震以及青藏高原块体的地震话动相关;宁夏境内南部的西(吉)、海(原)、固(原)地震区与北部的银川平原地震区之间的地震,活动也明显相关。这种大尺度的地震活动相关性,都是以一定的地质构造为纽带的。很可能是在同时受力的状态下,一处发震后,促使他处相继发生地震。这反映了地震的块体活动和整个地震带统一活动的特征。同时,诱发前震可能也反映了A、B两次地震的相关活动。Abstract: The correlation of the earthquakes and induced foreshock in Ningxia a nd its neighboringsregions are described in this paper.The results show that the earthquakes occurred in Ningxia and its neighboring regions are correlated with the eathquakes of given specific regions,such as the boundaries of Ordos block,Jiangsu province,the Qinghai-Xizang plateau block,and Helingeer regionof lnner Mongolia.In addition,the eahth-quakes between the two seismic regions of Yinchuan plain and Xi-Hai-Gu within Ningxia province are of correlation too.The time interval of two correlative earthquakes is about a few days to ten-oddmonths.Induced fore shock of several moderate strong earthquakes of Ningxia and its neigh-boring regions since 1970 are quite clear.But how to distinguish foresho-ckes before big earthquakes is a considerable difficult problem at present.
-
[1] 许绍燮等,北京周围地区地震的分布特点与地壳屈曲,地震学报,2,2, 1980。 [2] 许绍燮等,地震活动图象,地震学报,4, 3, 1982。 [3] 赵根模,我国板内大地震之间的一种联系一诱发作用,地震研究,4, 3, 1981。 [4] 杨理华等,华北地壳应力场,地震出版社,1981年。 [5] 国家地震局兰州地震研究所,宁夏回族自治区地震队,一九二0年海原大地震地震出版社,1980。 [6] 孙加林等,近年来阴山一燕山地震带地震活动的某些特征,华北地震科学,1, 1,1984。 [7] 马宗晋等,中国九大地地震出版社,1982。 [8] Li Mengluan Some Impending Earthquakes Precursors and Features of the Regional Seismicity Before the 1982 Haiyuan Earthquake (M=5.5), 地震研究,7,5, 1984。 -

计量
- 文章访问数: 1665
- HTML全文浏览量: 216
- PDF下载量: 158