| Regional characteristics of stress field in the southern part of the north－south seismic belt in China and its relation with plate movement |
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| 引用本文： | 徐纪人,尾池和夫.Regional characteristics of stress field in the southern part of the north－south seismic belt in China and its relation with plate movement[J].地震学报(英文版),1995,8(1):39-49. |
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| 作者姓名： | 徐纪人 尾池和夫 |
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| 作者单位： | Department of Geophysics，Faculty of Soience，Kyoto University，Kyoto 606-01，Japan |
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| 摘 要： | Ｒｅｇｉｏｎａｌｃｈａｒａｃｔｅｒｉｓｔｉｃｓｏｆｓｔｒｅｓｓｆｉｅｌｄｉｎｔｈｅｓｏｕｔｈｅｒｎｐａｒｔｏｆｔｈｅｎｏｒｔｈ－ｓｏｕｔｈｓｅｉｓｍｉｃｂｅｌｔｉｎＣｈｉｎａａｎｄｉｔｓｒｅｌａｔｉｏｎｗｉｔｈｐｌａｔｅ ｍｏｖｅｍｅｎｔＪｉ－Ｒｅｎ...
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| 收稿时间： | 7 August 1993 |
| 修稿时间： | 16 July 1994 |
Regional characteristics of stress field in the southern part of the north-south seismic belt in China and its relation with plate movement |
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| Ji-Ren XU and Kazuo OIKE.Regional characteristics of stress field in the southern part of the north-south seismic belt in China and its relation with plate movement[J].Acta Seismologica Sinica(English Edition),1995,8(1):39-49. |
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| Authors: | Ji-Ren XU and Kazuo OIKE |
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| Institution: | (1) Department of Geophysics, Faculty of Science, Kyoto University, 606-01 Kyoto, Japan |
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| Abstract: | The regional characteristics of stress field in the southern part of the northusouth seismic belt (NSB) have beenanalyzed in detail based on the mechanism solutions of 134 medium and large earthquakes from 1933 to 1991.The results show that the southern part of the NSB is a shallow earthquake zone where most earthquakes arecaused by the strike-slip faulting. There is a systematic distribution of the directions of P-and T-axes in thewestern and the eastern regions of the southern part of the NSB. P-and T-axes in the western region are in theNE-SW direction and in the NW-SE direction. P-and T-axes in the eastern region are oriented in NW-SE andNE-SW, respectively. The directions of p-axes in the western and the eastern regions show a pattern of a reversal "V" as a whole. The boundary between the eastern and western regions coincides with that between the Tibetan Plateau and the Yangtze crustal block. Based on a lot of mechanism solutions, the result indicates that thedirection of P-axes roughly shows the consistent distributions from the Himalayan collision zone to the easternregion and from the eastern coast collision zone in Taiwan to the eastern region of southern part of the NSB, respectively. It is suggested that the tectonic force due to relative movement between the indo-Australian and theEurasian plates is transmitted from the Himalayan collision zone to the western region of the southern part ofNSB, simultaneously, the tectonic force due to the relative movement between the Philippine Sea and theEurasian plates is transmitted from the eastern region coast in Taiwan to the eastern region of the southern partof NSB, and control the stress field there, respectively. |
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| Keywords: | seismic belt stress field plate movement |
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