[1]杨江涛,庙 成,黄 涛,等.泥石流活动对地震的响应分析——以四川省为例[J].华南地震,2023,(03):86-94.[doi:10.13512/j.hndz.2023.03.11]
 YANG Jiangtao,MIAO Cheng,HUANG Tao,et al.Response Analysis of Debris Flow Activities to Earthquakes—a Case Study of Sichuan Province[J].,2023,(03):86-94.[doi:10.13512/j.hndz.2023.03.11]
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泥石流活动对地震的响应分析——以四川省为例()
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华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2023年03期
页码:
86-94
栏目:
地震与地质灾害
出版日期:
2023-09-20

文章信息/Info

Title:
Response Analysis of Debris Flow Activities to Earthquakes—a Case Study of Sichuan Province
文章编号:
1001-8662(2023)03-0086-09
作者:
杨江涛1庙 成2黄 涛3林虹宇4
1.自贡市自然资源和规划局,四川 自贡643000;2.宁夏师范学院 资源环境与生命科学学院,宁夏 固原 756000;3.西南科技大学 土木工程与建筑学院,四川 绵阳 621000;4.宜宾市长宁县应急管理局,四川 长宁 644300
Author(s):
YANG Jiangtao1MIAO Cheng2HUANG Tao3LIN Hongyu4
1.Zigong Municipal Bureau of Natural Resources and Planning , Zigong 643000, China;2.School of Resources Environment and Life Sciences , Ningxia Normal University , Guyuan 756000, China;3.School of Civil Engineer?ing and Architecture , Southwest Universit
关键词:
泥石流地震响应分析小波分析四川
Keywords:
Debris flowEarthquakeResponse analysisWavelet analysisSichuan
分类号:
P65;P694
DOI:
10.13512/j.hndz.2023.03.11
文献标志码:
A
摘要:
近年来,全球板块运动活跃,地震多发频发,震后泥石流作为一种特殊灾害,其破坏力强,危害巨大,但泥石流活动对不同地震的响应往往多为定性评价,鲜有定量评价。为了解泥石流活动对地震的响应机制,选取四川省为研究区,使用小波分析对地震和泥石流的时空响应进行探讨。在长时间序列下,泥石流与地震具有多尺度特征,泥石流在不同尺度的周期等于或大于地震周期,在大时间尺度影响下泥石流发生周期要比地震长,泥石流发生频次与地震发生频次具有正相关性,地震发生后1~3a内泥石流发生较为强烈,泥石流的活跃性在地震后1~7a内较为显著,之后不断衰减。泥石流与断裂带密度、地震震级、距震中距离和地震烈度4种地震指标的空间分布呈带(条)集中分布,且之间相互关系呈正(负)相关关系。该研究可以为震后泥石流地质灾害防治提供参考决策依据。
Abstract:
In recent years,the global plate movement is active and earthquakes occur frequently. As a special di?saster,post-earthquake debris flow has strong destructive power and great harm. However,the response of debris flow activities to different earthquakes is often evaluated qualitatively and rarely quantitatively. In order to under?stand the response mechanism of debris flow activities to earthquakes,Sichuan Province was selected as the study area, and the wavelet analysis was used to discuss the temporal and spatial responses of earthquakes and debris flows. In the long time series, debris flow and earthquake have multi-scale characteristics. The period of debris flow at different scales is equal to or greater than the earthquake period. Under the influence of large time scales, the period of debris flow is longer than that of earthquake,and the frequency of debris flow is positively correlated with the frequency of earthquake. Debris flow occurs more intensely within 1-3 a after the earthquake,and the ac?tivity of debris flow is more significant within 1-7 a after the earthquake, and then decreases continuously. The spatial distribution of debris flow and the four seismic indicators of fault zone density,earthquake magnitude,dis?tance from epicenter and earthquake intensity is concentrated in bands(strips),and the relationship between them is positive(negative)correlation. This study can provide reference and decision-making basis for the prevention and control of geological hazards of debris flow after the earthquake.

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备注/Memo

备注/Memo:
收稿日期:2023-02-06
基金项目:宁夏哲学社会科学规划项目(引才专项)(20NXRCC15);宁夏优秀人才支持计划资助(2021年第六批宁夏回族自治区青年科技人才托举工程);自贡市地质灾害风险调查评价(510301202100069)联合资助。
作者简介:杨江涛(1992-),男,工程师,主要从事地质灾害防治和地质环境管理工作。E-mail:yangjiangtao@vip.163.com
通信作者:庙成(1989-),男,博士,副教授,主要从事地质灾害风险评估与管理方面的研究工作。E-mail:miaocheng19890922@163.com
更新日期/Last Update: 2023-09-20