台湾及台湾海峡地震活动对大陆地区的影响  

Impacts of the Taiwan and Taiwan Strait earthquakes on China mainland

作　　者：张志中[1] 潘华[1] 黄昭[2] 王善雄[2] 游良斌[2] 鄢家全[1] 吴宣[1] 

机构地区：[1]中国地震局地球物理研究所,中国北京100081 [2]福建省地震局,中国福州350003

出　　处：《地震学报》2009年第3期319-332,共14页Acta Seismologica Sinica

基　　金：地震行业专项“核电厂地震安全问题研究”(200708003)资助;中国地震局地球物理研究所论著09AC1006

摘　　要：根据已有和近年来补充调查的资料,阐明了台湾及台湾海峡地震对大陆东南沿海地区影响的差异,并通过对以下问题的分析,探讨了其结果在震害防御与历史地震考证方面的意义:①台湾地区的强震频度较高,间隔时间从几年到数十年,但对大陆沿海地带的最大影响烈度仅为Ⅵ度,最大有感半径达1100km,有感地带的宽度大于500km.这些地震在大陆地区可产生数毫米位移的长周期地面运动;②台湾海峡西侧滨海断裂带发生的强震,其频度不如台湾地区高,却因距离大陆较近,最大影响烈度达Ⅷ—Ⅸ度,最大有感半径大于1000km,有感地带的宽度大于400km;③我国东南沿海地带的震害防御策略,宜在着重考虑滨海断裂带强震影响的同时,还要注意台湾地震对工程结构造成的损伤,以及恐震心理引发的哄动社会效应影响;④大陆地区记载到的1517年5月19日地震事件,宜视为台湾地区的强震影响更为妥切.Based on existed and recently investigated data, this paper presents the different affects of the Taiwan and Taiwan Strait earthquakes on southeastern coastal region of China mainland. We did the following researches and showed that our research results are of significance in historical earthquake confirmation and seismic hazard prevention. （1） Taiwan strong earthquakes occur frequently, with a time interval of a few years to decades. However, the mainland coastal region were only affected with the maximum intensity of degreeⅥ, the maximum felt radius of 1 100 km and the felt zone width of 500 km or more. These earthquakes could induce long period ground displacement of a few millimeters on the mainland. （2） The earthquakes in western Taiwan Strait region occurred with a frequency less than that in the Taiwan region, but they induced the maximum intensity of Ⅷ-Ⅸ on the mainland because of closer distance. The maximum felt radius of them is more than 1 000 km, with the width of felt zone greater than 400 km. （3） The strategy of seismic hazard prevention for southeastern coastal region of China should focus on resisting possible impact from the earthquakes in western Taiwan Strait, and should also pay attention to possible damage and probable psychological panic induced by Taiwan earthquakes. （4） It is appropriate to treat the literal records on 19 May 1517 earthquake registered in the mainland region as the impact of a strong earthquake in Taiwan region.

关 键 词：台湾地区 台湾海峡 地震影响 震害防御 历史地震 

分 类 号：P315.5[天文地球—地震学]