摘要
20世纪七八十年代,广东省地震部门先后两次派遣科技人员,在潮汕地区进行1918年南澳大地震调查工作,广泛搜集当年地震极灾区内各乡镇村落的灾害情况,为确定地震烈度影响场分布范围和震中位置提供了可靠的依据,由此判定:在地震高烈度区内的南澎列岛共轭断层活动构造,乃是南澳大地震发震构造。由于南澎列岛的发震构造机制,令发生南澳大地震时,在潮汕与闽南地区的海岸线出现海潮退而复涨的异常现象。这是20世纪中国南海近海唯一伴有海啸发生的地震。
In the seventies and eighties of last century, Guangdong Earthquake Agency has sent earthquake workers twice to Chaoshan area to investigate the Nanao Earthquake in 1918. They widely collected the disaster situation of villages in the earthquake disaster area, which provide a reliable basis for the determination of distribution range of the seismic intensity influence field and the epicenter position. Based on above, it can be inferred that the Nanpeng Islands conjugate fault activity construction in the high intensity area is the seismic structure of the Nanao earthquake. Due to the seismogenic tectonic mechanism the Nanpeng Isliand, there existed anomaly in the coastline in Chaoshan and southern Fujian region with the tide retreating and then rising again.The Nanao earthquake is the only earthquake with a tsunami in 20 th century near South China Sea offshore.
作者
彭承光
李运贵
吴名彬
PENG Chengguang;LI Yungui;WU Mingbin(Guangdong Earthquake Agency, Guangzhou 510070, Chian)
出处
《华南地震》
2017年第A01期1-14,共14页
South China Journal of Seismology
关键词
汕头市
南澳7.3级地震
发震构造机制
海啸
Shantou City
The Nanao 7.3 earthquake
Seismogenic tectonic mechanism
Tsunami
