FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2034000535> ?p ?o ?g. }

• W2034000535 endingPage "587" @default.
• W2034000535 startingPage "572" @default.
• W2034000535 abstract "The attenuation in the uppermost 500 km of the inner core is investigated at the global scale from the comparison of PKP(DF) and PKP(BC) phases recorded at broad-band GEOSCOPE stations. From the amplitude ratio DFIBC, we show that for most paths the attenuation is not frequency-dependent in the range 0.2–2 Hz. This result follows from the linearity of ln(DF/BC) with frequency. A notable exception occurs for paths from the south-west Pacific to Europe, as analysed in previous studies which infer a frequency dependence of inner core attenuation. The DF/BC amplitude ratios are determined at 3 s periods for the different paths. The data include the diffracted branch of BC at long distances, providing a deeper sampling of the inner core by the DF phase. The variations of the DF/BC amplitude ratio with epicentral distance exhibit a rather large scatter around a mean curve. This mean curve is compared to the theoretical ratios obtained for several earth models using synthetic seismograms. A trade-off exists between the velocity at the base of the liquid core and the attenuation in the uppermost inner core. Robust features include a velocity decrease in the lowermost liquid core, inferred from previous studies of the PKP(BC) propagation times, and a Q decrease at the top of the inner core, required by the DF/BC amplitude ratios. The preferred model exhibits a constant velocity gradient in the lowermost 150 km of the liquid core, and Q = 200 in the uppermost 100 km of the inner core, Q= 440 below. With the adopted velocity model, an increase of Q with depth is required by the data. The amplitude ratio DF/BC exhibits regional variations, which cannot be attributed with certainty to regional variations of Q inside the inner core, due to the large Fresnel zone at the inner core and the possibility of wave focusing and defocusing in the mantle. On the other hand, with the available data, we failed to detect an anisotropy in attenuation inside the inner core." @default.
• W2034000535 created "2016-06-24" @default.
• W2034000535 creator A5015863050 @default.
• W2034000535 creator A5089490485 @default.
• W2034000535 date "1995-11-01" @default.
• W2034000535 modified "2023-09-23" @default.
• W2034000535 title "Attenuation in the uppermost inner core from broad-band GEOSCOPE<i>PKP</i>data" @default.
• W2034000535 cites W1971823256 @default.
• W2034000535 cites W1972957462 @default.
• W2034000535 cites W1973069688 @default.
• W2034000535 cites W1973390499 @default.
• W2034000535 cites W1984144468 @default.
• W2034000535 cites W1987153981 @default.
• W2034000535 cites W2011415215 @default.
• W2034000535 cites W2020710245 @default.
• W2034000535 cites W2026967401 @default.
• W2034000535 cites W2027323634 @default.
• W2034000535 cites W2037887709 @default.
• W2034000535 cites W2041182661 @default.
• W2034000535 cites W2050959461 @default.
• W2034000535 cites W2060191501 @default.
• W2034000535 cites W2062221814 @default.
• W2034000535 cites W2077081452 @default.
• W2034000535 cites W2080394190 @default.
• W2034000535 cites W2081910604 @default.
• W2034000535 cites W2093814622 @default.
• W2034000535 cites W2099739900 @default.
• W2034000535 cites W2108246706 @default.
• W2034000535 cites W2109180755 @default.
• W2034000535 cites W2110487360 @default.
• W2034000535 cites W2113081253 @default.
• W2034000535 cites W2115686815 @default.
• W2034000535 cites W2122449740 @default.
• W2034000535 cites W2128786814 @default.
• W2034000535 cites W2131994049 @default.
• W2034000535 cites W2136155205 @default.
• W2034000535 cites W2145233144 @default.
• W2034000535 cites W2163277767 @default.
• W2034000535 cites W2296973377 @default.
• W2034000535 cites W2463124066 @default.
• W2034000535 doi "https://doi.org/10.1111/j.1365-246x.1995.tb06872.x" @default.
• W2034000535 hasPublicationYear "1995" @default.
• W2034000535 type Work @default.
• W2034000535 sameAs 2034000535 @default.
• W2034000535 citedByCount "61" @default.
• W2034000535 countsByYear W20340005352012 @default.
• W2034000535 countsByYear W20340005352013 @default.
• W2034000535 countsByYear W20340005352014 @default.
• W2034000535 countsByYear W20340005352015 @default.
• W2034000535 countsByYear W20340005352016 @default.
• W2034000535 countsByYear W20340005352017 @default.
• W2034000535 countsByYear W20340005352019 @default.
• W2034000535 countsByYear W20340005352021 @default.
• W2034000535 countsByYear W20340005352022 @default.
• W2034000535 crossrefType "journal-article" @default.
• W2034000535 hasAuthorship W2034000535A5015863050 @default.
• W2034000535 hasAuthorship W2034000535A5089490485 @default.
• W2034000535 hasConcept C120665830 @default.
• W2034000535 hasConcept C121332964 @default.
• W2034000535 hasConcept C127313418 @default.
• W2034000535 hasConcept C13280743 @default.
• W2034000535 hasConcept C165205528 @default.
• W2034000535 hasConcept C169744125 @default.
• W2034000535 hasConcept C180205008 @default.
• W2034000535 hasConcept C184652730 @default.
• W2034000535 hasConcept C2164484 @default.
• W2034000535 hasConcept C44280652 @default.
• W2034000535 hasConcept C62520636 @default.
• W2034000535 hasConcept C72782756 @default.
• W2034000535 hasConcept C92354476 @default.
• W2034000535 hasConceptScore W2034000535C120665830 @default.
• W2034000535 hasConceptScore W2034000535C121332964 @default.
• W2034000535 hasConceptScore W2034000535C127313418 @default.
• W2034000535 hasConceptScore W2034000535C13280743 @default.
• W2034000535 hasConceptScore W2034000535C165205528 @default.
• W2034000535 hasConceptScore W2034000535C169744125 @default.
• W2034000535 hasConceptScore W2034000535C180205008 @default.
• W2034000535 hasConceptScore W2034000535C184652730 @default.
• W2034000535 hasConceptScore W2034000535C2164484 @default.
• W2034000535 hasConceptScore W2034000535C44280652 @default.
• W2034000535 hasConceptScore W2034000535C62520636 @default.
• W2034000535 hasConceptScore W2034000535C72782756 @default.
• W2034000535 hasConceptScore W2034000535C92354476 @default.
• W2034000535 hasIssue "2" @default.
• W2034000535 hasLocation W20340005351 @default.
• W2034000535 hasOpenAccess W2034000535 @default.
• W2034000535 hasPrimaryLocation W20340005351 @default.
• W2034000535 hasRelatedWork W1909998595 @default.
• W2034000535 hasRelatedWork W1984687370 @default.
• W2034000535 hasRelatedWork W2027323634 @default.
• W2034000535 hasRelatedWork W2028691411 @default.
• W2034000535 hasRelatedWork W2034000535 @default.
• W2034000535 hasRelatedWork W2045962161 @default.
• W2034000535 hasRelatedWork W2056695520 @default.
• W2034000535 hasRelatedWork W2132620393 @default.
• W2034000535 hasRelatedWork W2169683220 @default.
• W2034000535 hasRelatedWork W2526127384 @default.
• W2034000535 hasVolume "123" @default.

• next