| 大陆板内地震破裂带长度异常的讨论 |
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| 引用本文： | 汤泉,谢原定.大陆板内地震破裂带长度异常的讨论[J].西北地震学报,1985,7(3):1-7. |
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| 作者姓名： | 汤泉 谢原定 |
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| 作者单位： | 国家地震局兰州地震研究所
(汤泉)，国家地震局兰州地震研究所(谢原定) |
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| 摘 要： | 本文以1937年元月7日青海托索湖7.5级地震与1927年5月22日甘肃古浪8.0级地震为例,应用断裂力学中破裂时能量的平衡关系,分析了地震破裂带的长度异常。指出了长度异常在地震预报中的意义:假若一次强震后,出现了破裂带长度的偏长异常,则该地区在今后数十年内仍是一个地震危险区;相反,假若出现了偏短的长度异常,那么该区在今后相当一段时间内将不会再发生大震
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| 收稿时间： | 1984/10/31 0:00:00 |
DISCUSSION ON THE AHOMALY OF THE LENGTH OF SEISMIC RUPTURE BELT |
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| Tagn Quan and Xie Yuanding.DISCUSSION ON THE AHOMALY OF THE LENGTH OF SEISMIC RUPTURE BELT[J].Northwestern Seismological Journal,1985,7(3):1-7. |
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| Authors: | Tagn Quan and Xie Yuanding |
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| Institution: | Seismological Institute of Lanzhou, State Seismological Bureau, China and Seismological Institute of Lanzhou, State Seismological Bureau, China |
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| Abstract: | In this paper, take two earthquakes for example. Tuosuohu''s on Jan. 7,1937(M=7.5) and Gulang''s on May 22, 1927(M=8.0)The anomaly of the length of seismic rupture belt is discussed with the concept of energy balance in fracture mechanics.Such an anomaly of the length of rupture belt is of great importance in earthquake prediction. If the rupture belt is longer during a large earthquake, the same location can still be considered as a risk zone in the coming tens of years. In reverse, if the rupture belt is shorter, this region can be calm for quite a long period. |
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