首页|地震背景噪声功率谱密度及概率密度函数的计算及其Matlab实现

地震背景噪声功率谱密度及概率密度函数的计算及其Matlab实现

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介绍了地震背景噪声功率谱密度及概率密度函数计算方法及涉及的一些概念,以台站实际数据为例,给出了应用Matlab计算噪声功率谱密度及其概率密度函数的程序算法,该方法直接输入文本格式数据,计算台基噪声功率谱概率密度函数;以洛阳地震台 24 小时的连续波形记录为例,详细叙述了原始数据去仪器响应、计算功率谱密度、倍频程计算和噪声功率谱密度的概率密度函数计算实现的全过程.该方法编程简单,适用于单台噪声水平评估,在野外台站的快速勘选中具有潜在应用价值.
Seismic Background Noise Power Spectral Density and Probability Density Function Calculation Based on Matlab
This paper introduces the calculation methods and concepts related to the power spectral density and probability density function of seismic background noise.Taking actual data from the station as an example,a program algorithm for calculating the power spectral density and probability density function of noise using Matlab is provided.This method directly inputs text format data to calculate the probability density function of the power spectral density of background noise in a station.Taking the 24-hour continuous waveform record at Luoyang Seismic Station as an example,the entire process of implementing the removing instrument response,power spectral density calculation,octave calculation,and probability density function calculation of noise power spectral density from raw data is described in detail.This method is simple to program and suitable for evaluating the noise level of a single station.It has potential application value in the rapid selection of field stations.

seismic background noisenoise power spectrumnoise probability density functionoctaveinstrument response

刘庆华、鲁来玉、常利军、李宗超、侯博文、谢佳兴

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中国地震局地球物理研究所,北京 100081

河南省地震局,郑州 450016

地震背景噪声 噪声功率谱 噪声概率密度函数 倍频程 仪器响应

国家自然科学基金地震联合基金中国地震局地球物理研究所基本科研业务项目河南省科技攻关河南省地震局第四批科技创新团队

U1839209DQJB19B30242102320039

2024

华北地震科学
河北省地震局

华北地震科学

CSTPCD
影响因子:0.598
ISSN:1003-1375
年,卷(期):2024.42(3)
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