Article(id=1322506517513880414, tenantId=1146029695717560320, journalId=1281212831689347082, issueId=1322506406058635943, articleNumber=null, orderNo=null, doi=10.14075/j.jgg.2024.11.539, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1732636800000, receivedDateStr=2024-11-27, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793239724758, onlineDateStr=2026-10-29, pubDate=1763136000000, pubDateStr=2025-11-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793239724758, onlineIssueDateStr=2026-10-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793239724758, creator=13701087609, updateTime=1793239724758, updator=13701087609, issue=Issue{id=1322506406058635943, tenantId=1146029695717560320, journalId=1281212831689347082, year='2025', volume='45', issue='11', pageStart='1101', pageEnd='1210', issueExtLink='null', onlineDate='null', pubDate='1763136000000', pubDateStr='2025-11-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793239698184, creator='13701087609', updateTime=1793239698184, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=1204, endPage=1210, ext={EN=ArticleExt(id=1322506517669069663, articleId=1322506517513880414, tenantId=1146029695717560320, journalId=1281212831689347082, language=EN, title=Time-Frequency Characteristics of Seismic Signals of Second-Sampling Instruments Based on Variational Mode Decomposition Optimized by Sparse Index, columnId=null, journalTitle=Journal of Geodesy and Geodynamics, columnName=null, runingTitle=null, highlight=null, articleAbstract=
The variational mode decomposition(VMD) exhibits superior performance, and the setting of K and alpha parameters significantly influences its decomposition result. We optimize the selection of these two parameters based on sparse index, enabling the adaptive determination of the optimal K and alpha values. On this basic, VMD method is applied to seismic signal data observed by four types of second-sampling instruments at Yichang station, including BBVS-60 seismometers, DZW gravimeters, VP-type tiltmeters, and water level gauges, and time-frequency analysis is conducted combining with Hilbert transform. The results show that the optimal K and alpha values differ for each of four instruments. The K value represents the type of coseismic signal frequencies that can be decomposed, suggesting that the four instruments respond differently to the same seismic signal.
, authors=Xianxin TU
1, 2, Pinji LÜ
1, 2, Cheng WENG
1, 2, Yifan AN
1, 2, Zhihui ZENG
1, 2, Bo KANG
1, 2, authorsList=Xianxin TU, Pinji LÜ, Cheng WENG, Yifan AN, Zhihui ZENG, Bo KANG, authorCompany=null, correspAuthors=null, authorNote=
, correspAuthorsNote=null, copyrightStatement=
All rights reserved. Unauthorized reproduction is prohibited., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1322506520902878066, articleId=1322506517513880414, tenantId=1146029695717560320, journalId=1281212831689347082, language=CN, title=基于稀疏指标优化变分模态分解的秒采样仪器地震信号时频特征, columnId=1322506256904994864, journalTitle=大地测量与地球动力学, columnName=观测技术, runingTitle=null, highlight=null, articleAbstract=
变分模态分解(VMD)性能优越, 参数中K值和alpha值的设定对分解结果具有重要影响。本文基于稀疏指标对这2个参数的选取进行优化, 实现自适应寻找最优K值和最优alpha值。在此基础上, 对宜昌站BBVS-60地震计、DZW重力仪、VP型倾斜仪、水位仪4套秒采样仪器观测到的地震信号进行VMD, 并结合Hilbert变换进行时频分析。结果表明, 4套仪器的最优K值和最优alpha值均不同, 其中K值代表所能分解出的同震信号频率的种类, 说明4套仪器对同一地震信号的响应均不同。
, authors=涂先新
1, 2, 吕品姬
1, 2, 翁骋
1, 2, 安一凡
1, 2, 曾智辉
1, 2, 康波
1, 2, authorsList=涂先新, 吕品姬, 翁骋, 安一凡, 曾智辉, 康波, authorCompany=null, correspAuthors=null, authorNote=
, correspAuthorsNote=null, copyrightStatement=
版权所有,未经授权,不得转载。, copyrightOwner=大地测量与地球动力学编辑部, extLink=null, articleAbsUrl=null, sourceXml=WgMk3rLTquwiN73hNa3+0A==, magXml=ChRR9bRhBJBJCxWFmsO1yQ==, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=MnIpMnX8bH8wSc4HfZc0yw==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=EtSCsv+z5g27XvQX7w9zJA==, mapNumber=null, fund=null)}, authors=[Author(id=1322506521284559738, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=tuxianxin621@foxmail.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1322506521364251517, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, authorId=1322506521284559738, language=EN, stringName=Xianxin TU, firstName=Xianxin, middleName=null, lastName=TU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=1 Key Laboratory of Earthquake Geodesy, CEA, 40 Hongshance Road, Wuhan 430071, China
2 Hubei Earthquake Agency, 48 Hongshance Road, Wuhan 430071, China, bio={"content":"
TU Xianxin, engineer, majors in earthquake monitoring and prediction, E-mail: tuxianxin621@foxmail.com.
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TU Xianxin, engineer, majors in earthquake monitoring and prediction, E-mail: tuxianxin621@foxmail.com.
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1, 2, address=1 中国地震局地震大地测量重点实验室, 武汉市洪山侧路40号, 430071
2 湖北省地震局, 武汉市洪山侧路48号, 430071, bio={"content":"
涂先新, 工程师, 主要从事地震监测与预报研究, E-mail: tuxianxin621@foxmail.com
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涂先新, 工程师, 主要从事地震监测与预报研究, E-mail: tuxianxin621@foxmail.com
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1, 2, address=1 中国地震局地震大地测量重点实验室, 武汉市洪山侧路40号, 430071
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1, 2, address=1 Key Laboratory of Earthquake Geodesy, CEA, 40 Hongshance Road, Wuhan 430071, China
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1, 2, address=1 中国地震局地震大地测量重点实验室, 武汉市洪山侧路40号, 430071
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43 (8): 875- 880, articleTitle=null, refAbstract=null)], funds=[Fund(id=1322506529153074113, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, awardId=42174177, language=EN, fundingSource=National Natural Science Foundation of China(42174177), fundOrder=null, country=null), Fund(id=1322506529224377282, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, awardId=42174177, language=CN, fundingSource=国家自然科学基金(42174177), fundOrder=null, country=null), Fund(id=1322506529320846275, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, awardId=XH24029C, language=EN, fundingSource=The Spark Program of Earthquake Technology of CEA(XH24029C), fundOrder=null, country=null), Fund(id=1322506529396343748, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, awardId=XH24029C, language=CN, fundingSource=中国地震局地震科技星火计划(XH24029C), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1322506521104204659, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, xref=null, ext=[AuthorCompanyExt(id=1322506521112593268, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, companyId=1322506521104204659, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1 Key Laboratory of Earthquake Geodesy, CEA, 40 Hongshance Road, Wuhan 430071, China), AuthorCompanyExt(id=1322506521125176181, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, companyId=1322506521104204659, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1 中国地震局地震大地测量重点实验室, 武汉市洪山侧路40号, 430071)]), AuthorCompany(id=1322506521200673654, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, xref=null, ext=[AuthorCompanyExt(id=1322506521209062263, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, companyId=1322506521200673654, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2 Hubei Earthquake Agency, 48 Hongshance Road, Wuhan 430071, China), AuthorCompanyExt(id=1322506521221645176, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, companyId=1322506521200673654, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2 湖北省地震局, 武汉市洪山侧路48号, 430071)])], figs=[ArticleFig(id=1322506525457892263, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, language=EN, label=Fig. 1, caption=
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Fourier spectrum of simulated signal, figureFileSmall=BJU7X5AbvhWMTXkCg0rr9A==, figureFileBig=q6SbSlZMNBSOuWD7xO1DZw==, tableContent=null), ArticleFig(id=1322506525843768234, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, language=CN, label=图2, caption=
仿真信号的傅里叶频谱图, figureFileSmall=BJU7X5AbvhWMTXkCg0rr9A==, figureFileBig=q6SbSlZMNBSOuWD7xO1DZw==, tableContent=null), ArticleFig(id=1322506525910877099, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, language=EN, label=Fig. 3, caption=
Relationship between sparse index and K values, figureFileSmall=h6Jz7YZOXCGdT57OK1lHBg==, figureFileBig=c9YWu8Q7veZpvRcySWQBwA==, tableContent=null), ArticleFig(id=1322506525998957484, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, language=CN, label=图3, caption=
稀疏指标与K值关系, figureFileSmall=h6Jz7YZOXCGdT57OK1lHBg==, figureFileBig=c9YWu8Q7veZpvRcySWQBwA==, tableContent=null), ArticleFig(id=1322506526087037869, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, language=EN, label=Fig. 4, caption=
VMD results and marginal spectrum of each component, figureFileSmall=KQchwKBtBn/7Yo9l/LsMww==, figureFileBig=7DnfPBLYqEk1+Excie3cxA==, tableContent=null), ArticleFig(id=1322506526158341038, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, language=CN, label=图4, caption=
VMD结果及各分量的边际谱, figureFileSmall=KQchwKBtBn/7Yo9l/LsMww==, figureFileBig=7DnfPBLYqEk1+Excie3cxA==, tableContent=null), ArticleFig(id=1322506526233838511, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, language=EN, label=Fig. 5, caption=
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Relationship between K value and sparse index, figureFileSmall=Y0RSQ1Z/1ld/Mhl3OkMLRg==, figureFileBig=E+Mc0xbSt2tJhT3wIfMFng==, tableContent=null), ArticleFig(id=1322506526426776499, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, language=CN, label=图6, caption=
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VMD结果, figureFileSmall=fhXtfCqJ2gAxN77T7GbCwA==, figureFileBig=MFT4t1rtVEMP0LJHPXetyQ==, tableContent=null), ArticleFig(id=1322506526674240438, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, language=EN, label=Fig. 8, caption=
Hilbert time-frequency analysis, figureFileSmall=ihESLHElb9+3TfNXIn8s8Q==, figureFileBig=Q12O4bPNoHm6fhw++mkM9w==, tableContent=null), ArticleFig(id=1322506526758126519, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, language=CN, label=图8, caption=
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Comparison of time-frequency analysis results of two decomposition methods, figureFileSmall=OmDe37vnA8SdeizJABYBOQ==, figureFileBig=n0WUcDI6hFk9OoD8mYbFqg==, tableContent=null), ArticleFig(id=1322506528465208250, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322506517513880414, language=CN, label=图9, caption=
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The optimal decomposition layers and sparse indexes corresponding to different alpha values
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| alpha值 | 最佳分解层数K | 稀疏指标 |
| 1 000 | 6 | 301.575 02 |
| 3 000 | 6 | 322.840 73 |
| 5 000 | 6 | 336.563 52 |
| 7 000 | 8 | 248.632 56 |
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不同alpha值对应的最佳分解层数和稀疏指标
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| alpha值 | 最佳分解层数K | 稀疏指标 |
| 1 000 | 6 | 301.575 02 |
| 3 000 | 6 | 322.840 73 |
| 5 000 | 6 | 336.563 52 |
| 7 000 | 8 | 248.632 56 |
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Technical specifications of instruments
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| 仪器型号 | 技术指标 |
| 采样率/Hz | 单位 | 观测频带范围 | 分辨率 |
| BBVS-60地震计 | 100 | counts | 0.01~60 Hz | / |
| DZW重力仪 | 1 | 10-8m/s2 | / | 0.1×10-8m/s2 |
| VP仪 | 1 | ms | 0.016 7~40 Hz | / |
| WDY-DSW型水位仪(大河口井) | 1 | m | / | 0.001 m |
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仪器技术指标
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| 仪器型号 | 技术指标 |
| 采样率/Hz | 单位 | 观测频带范围 | 分辨率 |
| BBVS-60地震计 | 100 | counts | 0.01~60 Hz | / |
| DZW重力仪 | 1 | 10-8m/s2 | / | 0.1×10-8m/s2 |
| VP仪 | 1 | ms | 0.016 7~40 Hz | / |
| WDY-DSW型水位仪(大河口井) | 1 | m | / | 0.001 m |
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Optimal K values and sparse indexes under different alpha value conditions
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| alpha值 | 地震计 | | 重力仪 | | VP仪 | | 水位仪 |
| 最优K值 | 稀疏指标 | 最优K值 | 稀疏指标 | 最优K值 | 稀疏指标 | 最优K值 | 稀疏指标 |
| 1 000 | 11 | 33.819 27 | | 5 | 48.672 22 | | 10 | 35.840 50 | | 7 | 82.263 32 |
| 2 000 | 9 | 44.680 10 | | 8 | 64.337 02 | | 4 | 36.801 48 | | 7 | 80.934 33 |
| 3 000 | 7 | 37.753 06 | | 8 | 65.595 02 | | 4 | 38.593 95 | | 4 | 71.244 99 |
| 4 000 | 7 | 37.515 31 | | 8 | 85.908 21 | | 3 | 40.962 51 | | 4 | 78.160 04 |
| 5 000 | 12 | 43.186 41 | | 9 | 65.658 30 | | 3 | 43.565 97 | | 4 | 79.359 57 |
| 6 000 | 8 | 40.190 35 | | 9 | 66.709 79 | | 3 | 44.016 14 | | 4 | 79.172 62 |
| 7 000 | 13 | 38.454 20 | | 10 | 72.858 88 | | 11 | 47.516 05 | | 7 | 86.625 45 |
| 8 000 | 13 | 40.029 06 | | 10 | 73.064 31 | | 10 | 48.471 52 | | 9 | 82.674 72 |
| 9 000 | 13 | 39.588 40 | | 9 | 74.392 07 | | 10 | 55.574 11 | | 8 | 86.023 03 |
| 10 000 | 13 | 41.139 04 | | 9 | 80.161 85 | | 11 | 47.908 30 | | 8 | 78.792 50 |
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各alpha值条件下的最优K值和稀疏指标
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| alpha值 | 地震计 | | 重力仪 | | VP仪 | | 水位仪 |
| 最优K值 | 稀疏指标 | 最优K值 | 稀疏指标 | 最优K值 | 稀疏指标 | 最优K值 | 稀疏指标 |
| 1 000 | 11 | 33.819 27 | | 5 | 48.672 22 | | 10 | 35.840 50 | | 7 | 82.263 32 |
| 2 000 | 9 | 44.680 10 | | 8 | 64.337 02 | | 4 | 36.801 48 | | 7 | 80.934 33 |
| 3 000 | 7 | 37.753 06 | | 8 | 65.595 02 | | 4 | 38.593 95 | | 4 | 71.244 99 |
| 4 000 | 7 | 37.515 31 | | 8 | 85.908 21 | | 3 | 40.962 51 | | 4 | 78.160 04 |
| 5 000 | 12 | 43.186 41 | | 9 | 65.658 30 | | 3 | 43.565 97 | | 4 | 79.359 57 |
| 6 000 | 8 | 40.190 35 | | 9 | 66.709 79 | | 3 | 44.016 14 | | 4 | 79.172 62 |
| 7 000 | 13 | 38.454 20 | | 10 | 72.858 88 | | 11 | 47.516 05 | | 7 | 86.625 45 |
| 8 000 | 13 | 40.029 06 | | 10 | 73.064 31 | | 10 | 48.471 52 | | 9 | 82.674 72 |
| 9 000 | 13 | 39.588 40 | | 9 | 74.392 07 | | 10 | 55.574 11 | | 8 | 86.023 03 |
| 10 000 | 13 | 41.139 04 | | 9 | 80.161 85 | | 11 | 47.908 30 | | 8 | 78.792 50 |
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