[1]杨 芳,朱嘉健,朱 腾,等.基于移动时窗的τc计算方法及其在广东地区震级估算的应用[J].华南地震,2020,40(01):53-59.[doi:10.13512/j.hndz.2020.01.008]
　YANG Fang,ZHU Jiajian,ZHU Teng,et al.A Novel τc Method based on Moving Window and Its Application in Magnitude Estimation of Guangdong Region[J].South China journal of seismology,2020,40(01):53-59.[doi:10.13512/j.hndz.2020.01.008]
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基于移动时窗的τc计算方法及其在广东地区震级估算的应用()
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华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
40
期数:
2020年01期
页码:
53-59
栏目:
地震预警
出版日期:
2020-03-31

文章信息/Info

Title:
A Novel τc Method based on Moving Window and Its Application in Magnitude Estimation of Guangdong Region
文章编号:
1001-8662（2020）01-0053-07
作者:
杨 芳1; 2; 3; 朱嘉健1; 2; 3; 朱 腾1; 吕仲杭1
1. 广东省地震局，广州 510070；2. 中国地震局地震监测与减灾技术重点实验室，广州 510070；3. 广东省地震预警与重大工程安全诊断重点实验室，广州 510070
Author(s):
YANG Fang1; 2; 3; ZHU Jiajian1; 2; 3; ZHU Teng1; LYU Zhonghang1
1. Guangdong Earthquake Agency，Guangzhou 510070，China；2. Key Laboratory of Earthquake Monitoring and Disaster Mitigation Technology，Guangzhou 510070，China；3. Key Laboratory of Guangdong Province Earthquake Early Warning and Safety Diagnosis of Major Projects，Guangzhou 510070，China
关键词:
地震预警; 震级估算; τc方法; 时间窗口
Keywords:
Earthquake early warning; Magnitude estimation; τc method; Moving window
分类号:
P315.5
DOI:
10.13512/j.hndz.2020.01.008
文献标志码:
A
摘要:
地震预警系统是减轻地震灾害损失的关键手段，而利用地震P波初始信息快速估算震级则是地震预警系统的重要部分。对地震预警研究中常用的基于卓越周期τc的震级估算方法进行了研究，提出了基于移动时窗的τc计算方法。研究表明：τc值会在地震波到达台站时发生显著变化，根据这种变化可更为精准地确定用于震级估计的τc值。此外，利用上述方法对广东地区的地震记录进行分析，用函数拟合该地区τc与震级的关系，建立了适用于广东地区的τc震级快速估算模型。
Abstract:
Earthquake early warning system is the key means to reduce the loss of earthquake disaster. The rapid magnitude estimation using the initial information of seismic P wave is an important part of earthquake early warning system. In this paper, the magnitude estimation method based on τc is studied，and a novel τc method based on moving window is proposed. The research shows that the value of τc will change significantly when the seismic wave arrives at the seismic stations. According to this phenomenon，the changes of τc can be used to estimate the seismic magnitude directly. In addition，the seismic records in Guangdong region are analyzed by utilizing the proposed method. At last, by observing the relationship between the value of τc and magnitude, a rapid magnitude estimation model is established for Guangdong area.

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备注/Memo

备注/Memo:
收稿日期：2018-10-24基金项目：地震监测、预测、科研三结合课题（基于广东地区强震记录的预警震级估算 CEA-JC/3JH-161902）作者简介：杨 芳（1988- ），女，工程师，主要从事地震观测和强震监测数据分析工作。E-mail：328612609@qq.com.通信作者：朱嘉健（1989- ），男，工程师，从事工程结构强震动监测研究。E-mail：zjjsysu@foxmail.com.
更新日期/Last Update: 2020-04-18