[1]荆 涛,孙 艺,崔政东.辽宁地区低频背景噪声特征分析及模型建立[J].华南地震,2023,(01):61-69.[doi:10.13512/j.hndz.2023.01.08]
 JING Tao,SUN Yi,CUI Zhengdong.Characteristic Analysis and Model Establishment of Low Frequency Background Noise in Liaoning Area[J].,2023,(01):61-69.[doi:10.13512/j.hndz.2023.01.08]
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辽宁地区低频背景噪声特征分析及模型建立()
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华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2023年01期
页码:
61-69
栏目:
地震科学研究
出版日期:
2023-03-20

文章信息/Info

Title:
Characteristic Analysis and Model Establishment of Low Frequency Background Noise in Liaoning Area
文章编号:
1001-8662(2023)01-0061-09
作者:
荆 涛1孙 艺2崔政东1
1.沈阳地震监测中心站,沈阳 110061;2.辽宁省地震局,沈阳 110034
Author(s):
JING Tao1SUN Yi2CUI Zhengdong1
1.Shenyang Earthquake Monitoring Central Station , Shenyang 11006, China ;2.Liaoning Earthquake Agency , Shenyang 110034, China
关键词:
低频背景噪声模型建立特征分析
Keywords:
Low frequency background noiseModel establishmentFeature analysis
分类号:
P315.7
DOI:
10.13512/j.hndz.2023.01.08
文献标志码:
A
摘要:
低频背景噪声是地震数据的重要组成部分,在地下介质成像和地质构造探测等研究中发挥重要作用。区域性背景噪声研究不仅会得出该区域背景噪声特性,还可以针对地域性特征进行更适合的应用。辽宁地区低频背景噪声对本区域背景噪声研究有重要意义,基于辽宁省6个台站连续多年的宽频带地震背景噪声数据,利用地震计观测的位移值研究辽宁地区低频背景噪声特征,并采用数学函数模型构建了辽宁地区低频背景噪声模型。通过计算背景噪声位移分析发现,辽宁地区低频背景噪声(1Hz以下)具有明显季节性变化,通常在冬季达到最大值,在夏季达到最小值。基于三角函数关系拟合得到辽宁地区背景噪声年变公式,建立辽宁地区低频背景噪声模型,并采用ADF法验证了该模型可靠性。
Abstract:
Low-frequency background noise is an important part of seismic data and plays an important role in the research of subsurface media imaging and geological structure detection. Regional background noise research can not only obtain the background noise characteristics of the region, but also make more suitable applications for regional characteristics. The low-frequency background noise in Liaoning is of great significance to the study of background noise in this region. Based on the broadband seismic background noise data of six stations in Liaoning Province for many years, the characteristics of low-frequency background noise in Liaoning area are studied by using the displacement values observed by seismometers, and the low-frequency background noise model in Liaoning area is constructed by mathematical function model. Through calculating and analyzing the displacement generated by the background noise, it is found that the low-frequency background noise(below 1 Hz)in Liaoning has obvious seasonal changes, usually reaching the maximum value in winter and the minimum value in summer. Based on the fitting of trigonometric functions, the annual variation formula of background noise in Liaoning area is obtained, and a low-frequency background noise model in Liaoning area is established, and its reliability is verified by ADF method.

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备注/Memo

备注/Memo:
收稿日期:2022-05-10
基金项目:中国地震局地震监测、预测、科研三结合(3JH-202201071)
作者简介:荆涛(1985-),男,高级工程师,主要从事地震监测与研究工作。E-mail: 407447341@qq.com。

更新日期/Last Update: 2023-03-20