FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2007338873> ?p ?o ?g. }

• W2007338873 abstract "We examine waveforms and data used to construct coda magnitude in southern California to estimate the spatial variation of coda Q and its dependence on frequency. Our analysis combined with independent borehole data suggests that coda is mainly generated by multiple scattering in the upper few kilometers of the crust where large impedance contrasts occur because of surface layering or fracturing. The ubiquitous observation that coda Q increases with frequency is explained as arising from multiple reverberations in the upper crust. We suggest that the telegraph model that has been successfully used to describe reflection seismogram multiples in the exploration industry may also apply to earthquakes. Under this model the apparent increase of Q with frequency is due to trapping of high‐frequency energy in the upper crust. This behavior is expected if the associated reflector series has an exponential autocorrelation function, a feature of the telegraph model. At lower frequencies, trapping is less efficient. The combined effects give rise to an apparent absorption band that we suppose is superimposed on frequency‐independent intrinsic attenuation. Maximum apparent attenuation occurs at wavelengths equal to the dimensions of the regions of upper crust that contain the scattering layers. At lower frequencies, trapping is less effective, and attenuation decreases as the longer‐wavelength waves sample the deeper crust and upper mantle where because of overburden pressures, acoustic impedance contrasts are less extreme. By taking spectral ratios of coda waves to direct S , we estimate that intrinsic Q is high (∼3000) and that coda may be modeled as multiple scattered S waves in a region of anisotropic scattering. The exponential decay of the coda is a result of the perfectly reflecting surface of the Earth with backscattering from random near‐surface layers causing progressive leakage and loss of energy downward into the more transparent lower crust and mantle." @default.
• W2007338873 created "2016-06-24" @default.
• W2007338873 creator A5052574164 @default.
• W2007338873 creator A5085830112 @default.
• W2007338873 date "2007-09-01" @default.
• W2007338873 modified "2023-10-13" @default.
• W2007338873 title "Application of the telegraph model to coda<i>Q</i>variations in southern California" @default.
• W2007338873 cites W1501597519 @default.
• W2007338873 cites W1970976148 @default.
• W2007338873 cites W1988286755 @default.
• W2007338873 cites W1994553199 @default.
• W2007338873 cites W1994729497 @default.
• W2007338873 cites W2004296849 @default.
• W2007338873 cites W2022716782 @default.
• W2007338873 cites W2023071751 @default.
• W2007338873 cites W2025014051 @default.
• W2007338873 cites W2039940920 @default.
• W2007338873 cites W2040302025 @default.
• W2007338873 cites W2040810903 @default.
• W2007338873 cites W2047541136 @default.
• W2007338873 cites W2056676957 @default.
• W2007338873 cites W2061722445 @default.
• W2007338873 cites W2069523715 @default.
• W2007338873 cites W2071001824 @default.
• W2007338873 cites W2084982717 @default.
• W2007338873 cites W2094273345 @default.
• W2007338873 cites W2098292439 @default.
• W2007338873 cites W2108098146 @default.
• W2007338873 cites W2110603984 @default.
• W2007338873 cites W2125128070 @default.
• W2007338873 cites W2126269451 @default.
• W2007338873 cites W2130917613 @default.
• W2007338873 cites W2137196769 @default.
• W2007338873 cites W2166260557 @default.
• W2007338873 cites W4229929450 @default.
• W2007338873 cites W4232924227 @default.
• W2007338873 cites W4240333768 @default.
• W2007338873 doi "https://doi.org/10.1029/2006jb004542" @default.
• W2007338873 hasPublicationYear "2007" @default.
• W2007338873 type Work @default.
• W2007338873 sameAs 2007338873 @default.
• W2007338873 citedByCount "5" @default.
• W2007338873 countsByYear W20073388732012 @default.
• W2007338873 countsByYear W20073388732013 @default.
• W2007338873 countsByYear W20073388732014 @default.
• W2007338873 crossrefType "journal-article" @default.
• W2007338873 hasAuthorship W2007338873A5052574164 @default.
• W2007338873 hasAuthorship W2007338873A5085830112 @default.
• W2007338873 hasBestOaLocation W20073388731 @default.
• W2007338873 hasConcept C120665830 @default.
• W2007338873 hasConcept C121332964 @default.
• W2007338873 hasConcept C127313418 @default.
• W2007338873 hasConcept C165205528 @default.
• W2007338873 hasConcept C169744125 @default.
• W2007338873 hasConcept C180205008 @default.
• W2007338873 hasConcept C184652730 @default.
• W2007338873 hasConcept C2776698055 @default.
• W2007338873 hasConcept C3962253 @default.
• W2007338873 hasConcept C6260449 @default.
• W2007338873 hasConcept C8058405 @default.
• W2007338873 hasConceptScore W2007338873C120665830 @default.
• W2007338873 hasConceptScore W2007338873C121332964 @default.
• W2007338873 hasConceptScore W2007338873C127313418 @default.
• W2007338873 hasConceptScore W2007338873C165205528 @default.
• W2007338873 hasConceptScore W2007338873C169744125 @default.
• W2007338873 hasConceptScore W2007338873C180205008 @default.
• W2007338873 hasConceptScore W2007338873C184652730 @default.
• W2007338873 hasConceptScore W2007338873C2776698055 @default.
• W2007338873 hasConceptScore W2007338873C3962253 @default.
• W2007338873 hasConceptScore W2007338873C6260449 @default.
• W2007338873 hasConceptScore W2007338873C8058405 @default.
• W2007338873 hasIssue "B9" @default.
• W2007338873 hasLocation W20073388731 @default.
• W2007338873 hasLocation W20073388732 @default.
• W2007338873 hasLocation W20073388733 @default.
• W2007338873 hasOpenAccess W2007338873 @default.
• W2007338873 hasPrimaryLocation W20073388731 @default.
• W2007338873 hasRelatedWork W1516643255 @default.
• W2007338873 hasRelatedWork W1618974941 @default.
• W2007338873 hasRelatedWork W2044831873 @default.
• W2007338873 hasRelatedWork W2095055632 @default.
• W2007338873 hasRelatedWork W2112877060 @default.
• W2007338873 hasRelatedWork W2119712994 @default.
• W2007338873 hasRelatedWork W2361636930 @default.
• W2007338873 hasRelatedWork W2562708109 @default.
• W2007338873 hasRelatedWork W3132623182 @default.
• W2007338873 hasRelatedWork W86809483 @default.
• W2007338873 hasVolume "112" @default.
• W2007338873 isParatext "false" @default.
• W2007338873 isRetracted "false" @default.
• W2007338873 magId "2007338873" @default.
• W2007338873 workType "article" @default.