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介绍了丽江7.0级地震烈度、地震地质及中、短、临预报简况。中、短期预报准确,短临预报向云南省政府打了招呼。重点讨论中短期预报中使用的主要地震学判推。指出丽江7.0级地震前,中甸一下关地震带6级地震时间间隔已达19a,超过历史极限。该带北段1983~1993年10a内无M≥5地震;震中周围形成一长约150km空段,199O~1995年6a内震源区(△≤60km范围)M≥3.5地震出现平静异常。总之,震源周围地区小震及中强震平静是丽江7.0级地震主要特征。1995年12月至1996年1月的短临阶段,震源区外围的永胜、洱源等震中距77~12okm的地震窗口,出现小震频度增高或前兆震群。根据震源区内定点前兆数量少、异常幅度小等特征,作者提出中短期阶段,震源区介质刚度比源外区大,因此应变小、外围地区则相反的看法。
The seismic intensity, seismic geology and the forecast of medium, short and temporary earthquakes in Lijiang 7.0 are introduced. Medium and short-term forecasts accurate, short-term forecast to say hello to the Yunnan provincial government. Focus on major seismological judgments used in mid- and short-term forecasts. Pointed out that before the 7.0 magnitude earthquake in Lijiang, the interval of magnitude 6 earthquake of Shimonoseki Shimonoseki in Zhongdian County reached 19a, exceeding the historical limit. There is no M≥5 earthquakes in the northern section of the belt from 1983 to 1993; a space of about 150km is formed around the epicentral area, and the M≥3.5 earthquakes occur in the source area (△ ≤60km range) from 1994 to 1995. In summary, the small earthquakes around the epicenter and the moderate earthquakes are the main characteristics of the Lijiang M (subscript S) 7.0 earthquake. From December 1995 to January 1996, the frequency of small earthquakes increased or the epicenter swarm occurred in the seismic window with a distance of 77 ~ 12 km at Yongsheng and Eryuan epicenters around the epicenter. According to the small number of fixed-point precursors and small anomalies in the source area, the authors propose medium-short term phases in which the stiffness of the medium in the source area is larger than that of the source area, so the strain should be small while that in the peripheral area should be reversed.