摘要
文中讨论了近300年来发生在华北平原5次M≥7强震的构造特征及存在问题。其中包括对1966年邢台地震不存在地表地震断层的认识,对唐山地震的发震断层是西倾逆冲走滑断裂引发的问题,以及对1830年磁县地震和1937年菏泽地震发震构造环境的讨论。作者认为,当前在华北平原强震构造研究中存在诸多问题的主要原因,是对该区主要构造的晚第四纪活动状况不清楚,由此影响了华北平原强震构造标志的建立。如何在众多断裂中甄别出全新世活动的断裂,是开展华北平原未来强震危险性预测最有效的途径。
It is discussed that the tectonic characteristics and problems for 5 earthquakes with M ≥ 7.0 occurred in the North China Plain in recent 300 years. It includes that the understand for the ground ruptures no appearing in the 1966 Xingtai earthquake, the question caused by the thrust activity of the seismo-fauh of the Tangshan earthquake and the discussion of seismo-tectonic environment for the 1830 Cixian earthquake and the 1937 Heze earthquake. The author thinks that the main reason to the many problems existing in research of strong earthquake tectonics in the area now is active condition of main tectonics occurred large earthquakes during Late Quaternary hasn＇t been known. It affects foundation of symbol of strong earthquake tectonics in the North China Plain. How to reexamine the Holocene active fault from the many faults is the most effective way for seismic hazard assessment in the area in future.
出处
《中国地震》
CSCD
北大核心
2006年第2期135-141,共7页
Earthquake Research in China
关键词
华北平原
强震
发震构造
问题讨论
North China Piian Strong earhtquake Seismo-tectonics Problem discussion
