Article(id=1322916834411946822, tenantId=1146029695717560320, journalId=1281212831689347082, issueId=1322916705915249052, articleNumber=null, orderNo=null, doi=10.14075/j.jgg.2025.11.372, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1762099200000, receivedDateStr=2025-11-03, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793337551929, onlineDateStr=2026-10-30, pubDate=1784044800000, pubDateStr=2026-07-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793337551929, onlineIssueDateStr=2026-10-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793337551929, creator=13701087609, updateTime=1793337551929, updator=13701087609, issue=Issue{id=1322916705915249052, tenantId=1146029695717560320, journalId=1281212831689347082, year='2026', volume='46', issue='7', pageStart='790', pageEnd='912', issueExtLink='null', onlineDate='null', pubDate='1784044800000', pubDateStr='2026-07-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793337521294, creator='13701087609', updateTime=1793337521294, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=851, endPage=858, ext={EN=ArticleExt(id=1322916835720569671, articleId=1322916834411946822, tenantId=1146029695717560320, journalId=1281212831689347082, language=EN, title=Spatiotemporal Variations of the
b-Value in the Wuhan-Ezhou- Huanggang-Huangshi Metropolitan Area and Their Implications for Moderate-Strong Earthquakes, columnId=null, journalTitle=Journal of Geodesy and Geodynamics, columnName=null, runingTitle=null, highlight=null, articleAbstract=
Based on the earthquake catalog data from 1970 to 2025 for the Wuhan-Ezhou-Huanggang-Huangshi metropolitan area and its adjacent regions, the b-value was calculated using the maximum likelihood method. Leveraging the negative correlation between the b-value and differential stress, the stress state and seismic hazard of fault zones were analyzed in the context of the tectonic setting. The results indicate that: 1) The temporal evolution of b-values in the study area reveals a seismogenic process of "balanced accumulation-localized concentration-energy release-re-accumulation". Specifically, the overall low b-values from 1996 to 2010 corresponded to a strong stress-locking state prior to the Jiujiang earthquake. Since 2011, although b-values have rebounded, persistently low b-value anomalies on the northern side of the Xiangfan-Guangji fault suggest that this region is currently under a state of high-stress accumulation, posing a heightened risk of strong earthquakes. 2) Analysis of the Jiujiang earthquake comfirms that the b-value is sensitive to changes in tectonic stress. The low b-value anomaly in the source area before the earthquake reflected a high-stress locking state in the crust. The significant increase in b-values after the earthquake indicates stress release and crustal fragmentation caused by the mainshock rupture. Notably, analysis of b-value differences (Δb) reveals post-seismic stress migration and reloading toward the northwest of the epicenter, uncovering a complex process of post-seismic stress adjustment. This study enhances the understanding of the seismogenic dynamics of the Wuhan-Ezhou-Huanggang-Huangshi metropolitan area from the perspective of b-value spatiotemporal evolution and can provide a key basis for regional seismic hazard assessment and disaster prevention and mitigation.
, authors=Tengfei WU
1, Shuangxi ZHANG
2, 3, *, Tao CHENG
1, Meng CHEN
3, authorsList=Tengfei WU, Shuangxi ZHANG, Tao CHENG, Meng CHEN, authorCompany=null, correspAuthors=Shuangxi ZHANG, authorNote=null, 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=1322916840678237010, articleId=1322916834411946822, tenantId=1146029695717560320, journalId=1281212831689347082, language=CN, title=武鄂黄黄都市圈
b值时空演化特征及其对中强震的指示意义, columnId=1281933709121138897, journalTitle=大地测量与地球动力学, columnName=地球动力学, runingTitle=null, highlight=null, articleAbstract=
基于武鄂黄黄都市圈及邻域1970-2025年地震目录数据, 采用最大似然法计算地震b值, 并依据b值与差应力的负相关性, 结合构造背景分析断裂带的应力状态及地震危险性。研究结果表明: 1)研究区b值时间演化揭示了"均衡积累-局部集中-能量释放-重新积累"的孕震过程。其中, 1996-2010年b值整体偏低, 对应九江地震前的强应力闭锁状态; 2011年以来b值虽有回升, 但襄广断裂带北侧持续显示低b值异常, 暗示该区域目前仍处于高应力积累状态, 存在较高的强震危险性。2)九江地震分析证实b值对构造应力变化响应敏感。震前震源区低b值异常, 反映地壳高应力闭锁状态; 而震后b值显著回升, 表明主震破裂引起地壳应力释放与地壳介质破碎。对b值差值(Δb)分析发现, 震后应力向震源西北侧迁移并重新加载, 揭示了复杂的震后应力调整过程。本文从b值时空演化视角深化了对武鄂黄黄都市圈孕震动力学机制的认识, 可为区域地震危险性评估与防灾减灾提供关键依据。
, authors=吴腾飞
1, 张双喜
2, 3, *, 程涛
1, 陈梦
3, authorsList=吴腾飞, 张双喜, 程涛, 陈梦, authorCompany=null, correspAuthors=张双喜, authorNote=
, correspAuthorsNote=
, 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=EwV+7GeXTNbgW+vTAFs0CA==, magXml=KrqWDDjuYTrrlboTY4UuKA==, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=gsJUKVwa/0eQ6DGltRRkNg==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=x/SNApWtzYbYSe823PzSpg==, mapNumber=null, fund=null)}, authors=[Author(id=1322916842234323805, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322916834411946822, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=wutengfei@whu.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1322916842376930143, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322916834411946822, authorId=1322916842234323805, language=EN, stringName=Tengfei WU, firstName=Tengfei, middleName=null, lastName=WU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=1 School of Civil Engineering and Architecture, Hubei Polytechnic University, Huangshi 435003, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322916842448233312, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322916834411946822, authorId=1322916842234323805, language=CN, stringName=吴腾飞, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=1 湖北理工学院土木建筑工程学院, 黄石, 435003, bio={"content":"
吴腾飞, 博士, 副教授, 主要从事地震地质与防灾减灾研究, E-mail: wutengfei@whu.edu.cn
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吴腾飞, 博士, 副教授, 主要从事地震地质与防灾减灾研究, E-mail: wutengfei@whu.edu.cn
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2, 3, *, address=2 Department of Urban Construction, City University of Wuhan, Wuhan 430083, China
3 School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322916842691502950, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322916834411946822, authorId=1322916842519536482, language=CN, stringName=张双喜, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, 3, *, address=2 武汉城市学院城建学部, 武汉, 430083
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The distribution of geological structures and seismicity (ML≥2.0) in the Wuhan-Ezhou-Huanggang-Huangshi metropolitan area, figureFileSmall=mvp7jhkkTb4kDr40VzkrUQ==, figureFileBig=gsJUKVwa/0eQ6DGltRRkNg==, tableContent=null), ArticleFig(id=1322916845350691708, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322916834411946822, language=CN, label=图1, caption=
武鄂黄黄都市圈地质构造及地震活动性(ML≥2.0)分布 F1:郯庐断裂南段;F2:巴河断裂;F3:阳新断裂;F4:灵乡断裂;F5:襄广断裂;F6:麻团断裂;F7:乌龙泉断裂;F8:天门河断裂;F9:黄陂-青口断裂;Ⅰ:大别造山带;Ⅱ:中下扬子板块
, figureFileSmall=mvp7jhkkTb4kDr40VzkrUQ==, figureFileBig=gsJUKVwa/0eQ6DGltRRkNg==, tableContent=null), ArticleFig(id=1322916845677847421, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322916834411946822, language=EN, label=Fig. 2, caption=
Completeness analysis of earthquakes in four distinct stages within the Wuhan-Ezhou-Huanggang-Huangshi metropolitan area, figureFileSmall=z0e6IlpZLm1RyIpc+F+O7w==, figureFileBig=IaKJ+ZCinLv9iQ4xqmpROA==, tableContent=null), ArticleFig(id=1322916845757539198, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322916834411946822, language=CN, label=图2, caption=
武鄂黄黄都市圈4个不同阶段地震完备性分析, figureFileSmall=z0e6IlpZLm1RyIpc+F+O7w==, figureFileBig=IaKJ+ZCinLv9iQ4xqmpROA==, tableContent=null), ArticleFig(id=1322916845833036671, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322916834411946822, language=EN, label=Fig. 3, caption=
Temporal variation of the spatial distribution of b-values in the Wuahn-Ezhou-Huanggang-Huangshi metropolitan area, figureFileSmall=MbLZvzDrpKym8FhozAfkVw==, figureFileBig=XGPpwNgzNvifjy8WgArdrw==, tableContent=null), ArticleFig(id=1322916845912728448, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322916834411946822, language=CN, label=图3, caption=
武鄂黄黄都市圈b值空间分布随时间的变化, figureFileSmall=MbLZvzDrpKym8FhozAfkVw==, figureFileBig=XGPpwNgzNvifjy8WgArdrw==, tableContent=null), ArticleFig(id=1322916845979837313, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322916834411946822, language=EN, label=Fig. 4, caption=
M-t plot of regional seismicity before and after the Jiujiang earthquake, figureFileSmall=UAZzOBMYG2VF9x3DWGwz2A==, figureFileBig=1HavQ/rkBR/uyEUbXHVcBg==, tableContent=null), ArticleFig(id=1322916846072112002, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322916834411946822, language=CN, label=图4, caption=
九江地震前后区域地震活动M-t图, figureFileSmall=UAZzOBMYG2VF9x3DWGwz2A==, figureFileBig=1HavQ/rkBR/uyEUbXHVcBg==, tableContent=null), ArticleFig(id=1322916846139220867, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322916834411946822, language=EN, label=Fig. 5, caption=
Spatial distribution of b-values and the differences before and after the Jiujiang earthquake, figureFileSmall=L/e6LryFwKtkhKvhumYA/w==, figureFileBig=ZCxSW+8B/o5ucV+wlT75jg==, tableContent=null), ArticleFig(id=1322916846223106948, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322916834411946822, language=CN, label=图5, caption=
九江地震前后b值及差值的空间分布, figureFileSmall=L/e6LryFwKtkhKvhumYA/w==, figureFileBig=ZCxSW+8B/o5ucV+wlT75jg==, tableContent=null)], attaches=null, journal=Journal(id=1281211523964080133, delFlag=0, nameCn=大地测量与地球动力学, nameEn=Journal of Geodesy and Geodynamics, nameHistory1=null, nameHistory2=null, issn=1671-5942, eissn=null, cn=42-1655/P, coden=null, periodic=0, language=CN, oaType=null, ccby=null, superviseOffice=null, ownerOffice=null, pubOffice=null, editorOffice=null, officeType=null, aims=null, clcCode=null, officeProv=null, officeCity=null, officeAddr=null, officeZip=null, officeEmail=null, officePhone=null, editDirector=null, officeDirector=null, officeDirectorPhone=null, officeStaffNum=null, officeEmpNum=null, coverPicUrl=BeWo6OWOseISH6uPOmc2hA==, journalPrice=null, startedYear=null, abbrevIsoEn=Journal of Geodesy and Geodynamics, journalRemark=null, publicationField=null, createdTime=1783394231074, updatedTime=1788951966472, createdBy=18614031015, updatedBy=13041195026, firstLetterCn=D, 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