2000
DOI: 10.1046/j.1365-246x.2000.00147.x
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Abstract: S U M M A RYAlthough the Earth's inner core has long been thought to be solid, there have not, as yet, been unequivocal observations of inner core shear waves. Here we present observations of the phases pPKJKP and SKJKP for the Flores Sea event of 1996 June 17. The observations support the value of approximately 3.6 km s {1 for the inner core shear wave velocity and open up new possibilities for exploring the anisotropic structure and the attenuation properties of the inner core. The analysis and validation of… Show more

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Cited by 76 publications
(53 citation statements)
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“…They demonstrate that the PKJKP detection reported by Okal & Cansi (1998) may be a misidentification and that data from the great June 9, 1994, Bolivia earthquake do not show unambiguous inner-core shear phases. Deuss et al (2000) emphasize that inner-core shear phases can only be observed at longer periods because strong attenuation at shorter periods wipes out the signal (Doornbos 1974). Their preferred inner-core shear-wave velocity of 3.6 km/s is in excellent agreement with that in PREM (see Figure 1).…”
Section: Inner-core Shear Wavessupporting
confidence: 67%
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“…They demonstrate that the PKJKP detection reported by Okal & Cansi (1998) may be a misidentification and that data from the great June 9, 1994, Bolivia earthquake do not show unambiguous inner-core shear phases. Deuss et al (2000) emphasize that inner-core shear phases can only be observed at longer periods because strong attenuation at shorter periods wipes out the signal (Doornbos 1974). Their preferred inner-core shear-wave velocity of 3.6 km/s is in excellent agreement with that in PREM (see Figure 1).…”
Section: Inner-core Shear Wavessupporting
confidence: 67%
“…It would seem that Deuss et al (2000) have finally detected inner-core shear waves. Their body-wave observations confirm mode inferences in the early seventies (Dziewonski 1971, Dziewonski & Gilbert 1971) that the inner core is solid.…”
Section: Discussionmentioning
confidence: 99%
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“…Observations of shear waves in the inner core are limited (Deuss et al, 2000;Cao et al, 2005;Cao & Romanowicz, 2009) and only one attempt to observe shear-wave anisotropy using PKJKP has ever been made (Wookey & Helffrich, 2008). Furthermore, PKJKP is a majorarc phase, which is refracted towards the centre of the Earth at the ICB due to the low shear velocity in the inner core.…”
Section: Frequency and Q Response To An Isotropic Top Layermentioning
confidence: 99%
“…A shear wave through the inner core has only been observed for a few events (Deuss et al, 2000;Cao et al, 2005;Wookey & Helffrich, 2008), and only when seismograms are stacked to enhance the signal-noise ratio. No inner core Swave anisotropy has ever been observed in a single seismogram.…”
Section: Pkjkp Modesmentioning
confidence: 99%