[1]王志浩,单维锋,滕云田.中国地震科学实验场地震时空演变规律研究[J].世界地震工程,2021,(02):223-231.
 WANG Zhihao,SHAN Weifeng,TENG Yuntian.Study on the temporal and spatial evolution of earthquakes in CSES[J].,2021,(02):223-231.
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中国地震科学实验场地震时空演变规律研究
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《世界地震工程》[ISSN:/CN:]

卷:
期数:
2021年02期
页码:
223-231
栏目:
出版日期:
2021-04-30

文章信息/Info

Title:
Study on the temporal and spatial evolution of earthquakes in CSES
作者:
王志浩1 单维锋12 滕云田2
1. 防灾科技学院应急管理学院, 河北 廊坊 065201;
2. 中国地震局地球物理研究所, 北京 100081
Author(s):
WANG Zhihao1 SHAN Weifeng12 TENG Yuntian2
1. School of Emergency Management, Institute of Disaster Prevention, Langfang 065201, China;
2. Institute of Geophysics, China Earthquake Administration, Beijing 100081, China
关键词:
地震时空演变空间统计学标准差椭圆空间自相关分析
Keywords:
temporal and spatial evolution of earthquakespatial statisticsstandard deviational ellipsespatial autocorrelation analysis
分类号:
P315.7
摘要:
通过分析某一区域地震事件的时空演化过程可以了解该区域地震的演化特征,为评估该地区地震的危险性提供依据。基于中国地震科学实验场2000年至2019年3.0级以上的地震事件数据,利用加权平均中心、标准差椭圆和全局空间自相关等空间统计学方法探索该地区地震事件的时空演变规律。结果表明:(1)汶川地震之后该地区地震的发生频次总体呈现出下降趋势,地震的活动性逐渐减弱。(2)地震加权平均中心呈现出"折返"型的移动规律,在东北-西南方向上来回震荡。(3)地震事件的空间分布呈现"东北-西南"格局走向,与映秀-北川断裂带的方向基本一致。(4)该地区地震事件的空间分布模式以聚集模式为主,且正处于上升阶段,但上升速度较为缓慢。
Abstract:
We can master the evolution features of earthquakes in an area by analyzing the temporal and spatial evolution process of earthquake events in the certain area, which can provide a theoretical basis for evaluating the risk of earthquakes in this area. In this paper, we explore the temporal and spatial evolution law of earthquake events in this area by using the spatial statistical methods such as weighted average center, standard deviational ellipse and global spatial autocorrelation based on the data of earthquake events with magnitude 3.0 or larger from 2000 to 2019 in CSES. The results show that (1) After the Wenchuan earthquake, the frequency of earthquakes in this area shows the trend of falling down, and the earthquake activity has gradually weakened, (2) the weight average center of the earthquake shows a "turn-back" type movement law, which is constantly going back and forth from northeast to southwest, (3) the direction of spatial distribution of earthquakes shows a "northwest-southeast" pattern, which is basically consistent with the direction of the Yingxiu-Beichuan Fault, and (4) the spatial distribution pattern of earthquake events in this area is mainly clustering pattern, and it is in the rising stage, but the rising speed is relatively slow.

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备注/Memo

备注/Memo:
收稿日期:2020-06-24;改回日期:2020-09-23。
基金项目:国家重点研发计划(2018YFC1503806);地震科技星火计划项目(XH16059)
作者简介:王志浩(1995-),硕士研究生在读,主要从事地震前兆大数据技术研究.E-mail:13598479253@163.com
通讯作者:单维锋(1977-),博士,教授,主要从事地震大数据分析及深度学习研究.E-mail:shanweifeng@cidp.edu.cn
更新日期/Last Update: 1900-01-01