[1]陈大庆,邵叶,谭争光,等.东南沿海地震带M≥5级中强地震活动的时空丛集特征[J].华南地震,2020,40(04):10-17.[doi:10.13512/j.hndz.2020.04.02]
　CHEN Daqing,SHAO Ye,TAN Zhengguang,et al.Spatial-temporal Clustering Characteristics of M≥5 Moderate and Strong Seismic Activities in the Southeast Coastal Seismic Belt[J].,2020,40(04):10-17.[doi:10.13512/j.hndz.2020.04.02]
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东南沿海地震带M≥5级中强地震活动的时空丛集特征()
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华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
40
期数:
2020年04期
页码:
10-17
栏目:
地震研究
出版日期:
2020-12-30

文章信息/Info

Title:
Spatial-temporal Clustering Characteristics of M≥5 Moderate and Strong Seismic Activities in the Southeast Coastal Seismic Belt
文章编号:
1001-8662（2020）04-0010-08
作者:
陈大庆; 邵叶; 谭争光; 黄元敏
广东省地震局,广州 58000
Author(s):
CHEN Daqing; SHAO Ye; TAN Zhengguang; HUAN Yuanmin
Guangdong Earthquake Agency,Guangzhou 510075,China
关键词:
东南沿海地震带; 中强地震活动; 时空丛集; 强震活动周期; 活动主体地区
Keywords:
The southeast coastal seismic belt; Moderate and strong earthquake activities; Spatial-temporal clustering; Period of strong earthquake activities; The main area of activities
分类号:
P315.5
DOI:
10.13512/j.hndz.2020.04.02
文献标志码:
A
摘要:
东南沿海地震带M≥5级中强地震活动有时空丛集的特征,有历史记录以来东南沿海地震带经历了3个7级强震的活动周期,其中以1600年广东南澳7.0级、1604年福建泉州海外7.5级、1605年海南琼山7.5级3次7级地震为主释放的第一强震活动周期与以1994年台湾海峡7.3级、和1994、1995年北部湾6.1、6.2级地震为主释放的第三强震活动周期具有较为相似的时空活动特征。在主释放期东南沿海地震带东西端都发生了6、7强震并且时间上有呼应的关系。在主释放后主要以5、6级中等地震活动为主,活动的主体地区在东南沿海地震带东段以及中段的粤桂交界地区,这对目前东南沿海地震带新一轮的5、6级地震活动空间主体地区的判断具有指示意义。而以1918年广东南澳东7.3级地震为主释放的第二活动周期活动则不同,此次主释放期的强震集中在东南沿海地震带的中到东段。西段未发生时间上有强呼应关系的中强地震,而随后的调整期地震仍然集中在东西两端,但相对分散在外围。
Abstract:
The moderate and strong earthquakes in the southeast coastal seismic belt are characterized by spatial-temporal clustering. Since historical records began,the southeast coastal seismic belt has experienced three active periods of strong earthquakes with M ≥7. The temporal and spatial activity patterns of the first active period,which is mainly released by the Nan’ao M 7.0 earthquake in 1600,Quanzhou overseas M7.5 earthquake in 1604,and the Qiongshan M7.5 earthquake in 1605,are similar to the third strong earthquakes period mainly released by the Taiwan Strait M7.3 earthquake in 1994,Beibu Gulf M6.1and M6.2 earthquakes in 1994 and 1995. In these two periods,the strong earthquakes occurred in the east and west end of the southeast coastal seismic belt during the main release stage and has a corresponding relation in the time. In the post-release stage,the main earthquakes are mainly moderate earthquakes with M5- 6,and the main activity area is the eastern section of the southeast coastal seismic belt and the middle section of Guangdong-Guangxi junction,which has indicative significance for the current judgment of the main area of seismic activity with M 5-6 in the southeast coastal seismic belt. The second period of activities which is released mainly by the Nan’ao M 7.3 earthquake in 1918 has different spatial-temporal clustering characteristic. The strong earthquakes in the main release stage are concentrated in the middle-east part of the southeast coastal seismic belt and no moderate-strong earthquakes occurred in the western segment in time,while the earthquakes in the subsequent adjustment stage are still concentrated at the east and west ends,but are relatively scattered in the periphery.

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相似文献/References:

[1]万永芳,陈大庆.粤闽交界及其近海地区地震活动分析[J].华南地震,2014,(04):20.[doi:10.13512/j.hndz.2014.04.04]
　[J].,2014,(04):20.[doi:10.13512/j.hndz.2014.04.04]

备注/Memo

备注/Memo:
收稿日期: 2019-10-26
基金项目:地震科技星火计划攻关项目（XH201905）
作者简介:陈大庆（1977- ）,男,高级工程师,主要从事地震预测研究。
E-mail: gd_daqing@163.com
更新日期/Last Update: 2020-12-20