基于集合经验模态分解的河北唐山井同震响应特征
P315; 集合经验模态分解(EEMD)能够客观真实地从非线性、非平稳信号中提取有用信息,地震观测井的井水位表征的波形信号也是典型的非线性、非平稳信号,因此,集合经验模态分解在获取井水位同震响应信息方面具有重要的应用潜力.通过观测河北唐山井 2016～2023 年多次井水位同震响应,研究集合经验模态分解对井水位分析处理的优缺点,识别唐山井对远震、近震的井水位同震响应特征,应用地震能量密度经验公式推测唐山井记震能力.结果表明:唐山井水位观测数据秒值在经过集合经验模态分解后,对合适的高频分量进行重构可以压制噪声干扰,有利于观察井水位同震响应特征;对于远场大震引起的振荡型同震响应可以客观真实地进行识...
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| Published in | 地球科学与环境学报 Vol. 46; no. 2; pp. 252 - 268 |
|---|---|
| Main Authors | , , , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
山西工程技术学院 地球科学与工程系,山西 阳泉 045000%华北理工大学 应急管理与安全工程学院,河北 唐山 063210%华北理工大学 应急管理与安全工程学院,河北 唐山 063210
01.03.2024
河北省地震局 唐山地震监测中心站,河北 唐山 063003%河北省地震局 唐山地震监测中心站,河北 唐山 063003%唐山市应急管理局,河北 唐山 063099%华北理工大学 矿业工程学院,河北 唐山 063210 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1672-6561 |
| DOI | 10.19814/j.jese.2023.11002 |
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| Abstract | P315; 集合经验模态分解(EEMD)能够客观真实地从非线性、非平稳信号中提取有用信息,地震观测井的井水位表征的波形信号也是典型的非线性、非平稳信号,因此,集合经验模态分解在获取井水位同震响应信息方面具有重要的应用潜力.通过观测河北唐山井 2016～2023 年多次井水位同震响应,研究集合经验模态分解对井水位分析处理的优缺点,识别唐山井对远震、近震的井水位同震响应特征,应用地震能量密度经验公式推测唐山井记震能力.结果表明:唐山井水位观测数据秒值在经过集合经验模态分解后,对合适的高频分量进行重构可以压制噪声干扰,有利于观察井水位同震响应特征;对于远场大震引起的振荡型同震响应可以客观真实地进行识别和提取;对于近场地震引起的脉冲型和阶变型同震响应,需结合原始数据进行研究;井水位观测数据秒值有利于揭示区域应力场的变化,因观测数据秒值记震精度提高,唐山井能够记录到地震能量密度为 1.77×10-7 J·m-3 的地震,观测井对不同方位地震的敏感度可用于研究其所在断裂带的裂隙走向.对于超过一定距离的远场地震,井-含水层系统能够记录到的井水位同震响应频率可在一定的范围内估算观测井的固有振动频率,唐山井固有振动频率和地震瑞丽面波频率接近. |
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| AbstractList | P315; 集合经验模态分解(EEMD)能够客观真实地从非线性、非平稳信号中提取有用信息,地震观测井的井水位表征的波形信号也是典型的非线性、非平稳信号,因此,集合经验模态分解在获取井水位同震响应信息方面具有重要的应用潜力.通过观测河北唐山井 2016～2023 年多次井水位同震响应,研究集合经验模态分解对井水位分析处理的优缺点,识别唐山井对远震、近震的井水位同震响应特征,应用地震能量密度经验公式推测唐山井记震能力.结果表明:唐山井水位观测数据秒值在经过集合经验模态分解后,对合适的高频分量进行重构可以压制噪声干扰,有利于观察井水位同震响应特征;对于远场大震引起的振荡型同震响应可以客观真实地进行识别和提取;对于近场地震引起的脉冲型和阶变型同震响应,需结合原始数据进行研究;井水位观测数据秒值有利于揭示区域应力场的变化,因观测数据秒值记震精度提高,唐山井能够记录到地震能量密度为 1.77×10-7 J·m-3 的地震,观测井对不同方位地震的敏感度可用于研究其所在断裂带的裂隙走向.对于超过一定距离的远场地震,井-含水层系统能够记录到的井水位同震响应频率可在一定的范围内估算观测井的固有振动频率,唐山井固有振动频率和地震瑞丽面波频率接近. |
| Abstract_FL | Ensemble empirical mode decomposition(EEMD)can objectively and truly extract useful information from nonlinear and non-stationary signals,and the waveform signal characterized by water level in seismic observation well is also a typical nonlinear and non-stationary signal,so that EEMD has important application potential in obtaining the co-seismic response information of well water level.Taking well Tangshan in Hebei as an example,the advantages and disadvantages of EEMD for well water level analysis and processing through its co-seismic response of multiple well water levels from 2016 to 2023 were analyzed,the co-seismic response characteristics of well Tangshan were identified to teleseismic and near-seismic well water levels,and the seismic recording ability of well Tangshan was inferred by using the empirical formula of seismic energy density.The results show that after EEMD processing,the reconstruction of appropriate high-frequency components can suppress noise interference,which is more conducive to observing the co-seismic response characteristics of well water level.The oscillating co-seismic response caused by far-field large earthquakes can be identified and extracted objectively and truly.For the study of step-varying co-seismic response caused by near-field earthquakes,it is necessary to combine the original data to identify through high-frequency components.The second value of well water level observation data is more conducive to revealing the change of regional stress field.Due to the improvement of the recording accuracy of second value of observation data,the earthquake with energy density of 1.77×10-7 J·m-3 could be record by water level of well Tangshan.The sensitivity of observation wells to earthquakes in different orientations can be used to study the orientation of the fracture in which they are located.For far-field earthquakes over a certain distance,the co-seismic response frequency of well water level recorded by the well-aquifer system can calculate the natural vibration frequency of observation well within a certain range,and the natural vibration frequency of well Tangshan is close to the seismic Rayleigh wave. |
| Author | 尹宝军 曹冲 丁俊柯 左文喆 许英霞 郭建芳 马传璧 |
| AuthorAffiliation | 山西工程技术学院 地球科学与工程系,山西 阳泉 045000%华北理工大学 应急管理与安全工程学院,河北 唐山 063210%华北理工大学 应急管理与安全工程学院,河北 唐山 063210;河北省地震局 唐山地震监测中心站,河北 唐山 063003%河北省地震局 唐山地震监测中心站,河北 唐山 063003%唐山市应急管理局,河北 唐山 063099%华北理工大学 矿业工程学院,河北 唐山 063210 |
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| Author_FL | YIN Bao-jun XU Ying-xia GUO Jian-fang MA Chuan-bi ZUO Wen-zhe DING Jun-ke CAO Chong |
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| DocumentTitle_FL | Co-seismic Response Characteristics of Water Level in Well Tangshan of Hebei,China Based on EEMD |
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| Keywords | second value of observation data well Tangshan 集合经验模态分解 裂隙走向 观测数据秒值 seismic energy density 地震方位 同震响应 natural frequency EEMD 固有频率 seismic orientation fracture orientation 唐山井 地震能量密度 co-seismic response |
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| Publisher | 山西工程技术学院 地球科学与工程系,山西 阳泉 045000%华北理工大学 应急管理与安全工程学院,河北 唐山 063210%华北理工大学 应急管理与安全工程学院,河北 唐山 063210 河北省地震局 唐山地震监测中心站,河北 唐山 063003%河北省地震局 唐山地震监测中心站,河北 唐山 063003%唐山市应急管理局,河北 唐山 063099%华北理工大学 矿业工程学院,河北 唐山 063210 |
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| Title | 基于集合经验模态分解的河北唐山井同震响应特征 |
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