Crustal stresses and damage evolve throughout the seismic cycle of the Ridgecrest fault zone.
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| Title: | Crustal stresses and damage evolve throughout the seismic cycle of the Ridgecrest fault zone. |
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| Authors: | Bryan, Jared, Frank, William B., Audet, Pascal |
| Source: | Science. 9/18/2025, Vol. 389 Issue 6766, p1256-1260. 5p. |
| Subjects: | Fault zones, Seismic waves, Crust of the earth, Earthquake damage, Earthquake magnitude |
| Abstract: | Earthquakes abruptly release tectonic stress that builds slowly over time through the coupled evolution of faults and the surrounding crust. Seismic wavespeeds track crustal deformation and stress changes, but typical monitoring methods are most sensitive to shallow depths. Using receiver functions, we tracked rupture-zone wavespeed and anisotropy changes throughout the crust during the 2019 Ridgecrest earthquake sequence. Shallow coseismic wavespeed reductions recovered within months, whereas a deeper postseismic wavespeed drop persisted without measurable recovery over several years. The deep, persistent wavespeed drop likely reflects accumulating damage driven by postseismic deformation, suggesting two possible scenarios: (i) a slow interseismic recovery where wavespeed and anisotropy track long-term stress evolution; or (ii) permanent deformation of an immature fault zone. Both scenarios affect the dynamics and energy budget of the seismic cycle. Editor's summary: When faults rupture, the sudden release of energy alters the properties of the surrounding crust, affecting its response to future stress. Seismic monitoring of these changes has been limited to shallow depths, leaving an incomplete picture of the response-recovery cycles of fault zones. To look deeper into this, Bryan et al. applied optimal transport to receiver functions at broadband seismic stations for several years before and after the 2019 Ridgecrest earthquakes in California (see the Perspective by Rodriguez Padilla). After the events, seismic waves slowed throughout the crustal column, a sign of both shallow and deep damage. Recovery at shallow depths occurred within months, whereas deep damage persisted for at least several years after rupture. —Angela Hessler [ABSTRACT FROM AUTHOR] |
| Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Psychology and Behavioral Sciences Collection |
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| Header | DbId: pbh DbLabel: Psychology and Behavioral Sciences Collection An: 188104197 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Crustal stresses and damage evolve throughout the seismic cycle of the Ridgecrest fault zone. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Bryan%2C+Jared%22">Bryan, Jared</searchLink><br /><searchLink fieldCode="AR" term="%22Frank%2C+William+B%2E%22">Frank, William B.</searchLink><br /><searchLink fieldCode="AR" term="%22Audet%2C+Pascal%22">Audet, Pascal</searchLink> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Science%22">Science</searchLink>. 9/18/2025, Vol. 389 Issue 6766, p1256-1260. 5p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Fault+zones%22">Fault zones</searchLink><br /><searchLink fieldCode="DE" term="%22Seismic+waves%22">Seismic waves</searchLink><br /><searchLink fieldCode="DE" term="%22Crust+of+the+earth%22">Crust of the earth</searchLink><br /><searchLink fieldCode="DE" term="%22Earthquake+damage%22">Earthquake damage</searchLink><br /><searchLink fieldCode="DE" term="%22Earthquake+magnitude%22">Earthquake magnitude</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Earthquakes abruptly release tectonic stress that builds slowly over time through the coupled evolution of faults and the surrounding crust. Seismic wavespeeds track crustal deformation and stress changes, but typical monitoring methods are most sensitive to shallow depths. Using receiver functions, we tracked rupture-zone wavespeed and anisotropy changes throughout the crust during the 2019 Ridgecrest earthquake sequence. Shallow coseismic wavespeed reductions recovered within months, whereas a deeper postseismic wavespeed drop persisted without measurable recovery over several years. The deep, persistent wavespeed drop likely reflects accumulating damage driven by postseismic deformation, suggesting two possible scenarios: (i) a slow interseismic recovery where wavespeed and anisotropy track long-term stress evolution; or (ii) permanent deformation of an immature fault zone. Both scenarios affect the dynamics and energy budget of the seismic cycle. Editor's summary: When faults rupture, the sudden release of energy alters the properties of the surrounding crust, affecting its response to future stress. Seismic monitoring of these changes has been limited to shallow depths, leaving an incomplete picture of the response-recovery cycles of fault zones. To look deeper into this, Bryan et al. applied optimal transport to receiver functions at broadband seismic stations for several years before and after the 2019 Ridgecrest earthquakes in California (see the Perspective by Rodriguez Padilla). After the events, seismic waves slowed throughout the crustal column, a sign of both shallow and deep damage. Recovery at shallow depths occurred within months, whereas deep damage persisted for at least several years after rupture. —Angela Hessler [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=188104197 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1126/science.adu9116 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 5 StartPage: 1256 Subjects: – SubjectFull: Fault zones Type: general – SubjectFull: Seismic waves Type: general – SubjectFull: Crust of the earth Type: general – SubjectFull: Earthquake damage Type: general – SubjectFull: Earthquake magnitude Type: general Titles: – TitleFull: Crustal stresses and damage evolve throughout the seismic cycle of the Ridgecrest fault zone. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Bryan, Jared – PersonEntity: Name: NameFull: Frank, William B. – PersonEntity: Name: NameFull: Audet, Pascal IsPartOfRelationships: – BibEntity: Dates: – D: 18 M: 09 Text: 9/18/2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 00368075 Numbering: – Type: volume Value: 389 – Type: issue Value: 6766 Titles: – TitleFull: Science Type: main |
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