论文部分内容阅读
一、前言聊考断裂带是我国东部一条重要的地震构造带。历史上1502年在濮城发生过6(1/2)级地震,1654年在朝城发生5(1/2)级地震。二十世纪以来,在菏泽西南相继发生了四次中、强地震,即1937年7级和6(3/4)级地震,1948年5.5级地震和1984年5.9级地震,其极震区部分重叠,应属于原地重复地震。本文试图根据该断裂带第四纪地质、考古、地壳形变、历史地震和现今地震有关资料,采用地质方法和Brune方法,分别计算聊考断裂带第四纪以来、人文时期和现今的平均位移速率,并以此讨论聊考断裂带长趋势地震危险性。
I. INTRODUCTION The Chatou fracture zone is an important seismic tectonic belt in the east of China. In the history of 1502, 6 (1/2) earthquakes occurred in Pucheng, and in 1654, 5 (1/2) earthquakes occurred in the city of Chao. Since the beginning of the 20th century, four moderate-strong earthquakes occurred successively in the southwest Heze area, namely the 7th and 6th (3/4) earthquakes in 1937, the 5.58 magnitude earthquake in 1948 and the 5.9 magnitude earthquake in 1984, Overlapped, should belong to repeated earthquakes in situ. Based on the data of Quaternary geology, archeology, crustal deformation, historical earthquakes and present-day earthquakes in the fault zone, this paper tries to calculate the average displacement velocity in the humanistic period and today since the Quaternary period of the fault zone by using the geological method and the Brune method , And discuss the danger of the earthquake with the long trend of fault zone.