Seismological evidence for a localized mushy zone at the Earth’s inner core boundary
نویسندگان
چکیده
منابع مشابه
Localized temporal change of the Earth's inner core boundary.
Compressional waves of an earthquake doublet (two events occurring in the South Sandwich Islands on 1 December 1993 and 6 September 2003), recorded at three seismic stations in Russia and Kyrgyzstan and reflected off Earth's inner core boundary, arrived at least from 39 to 70 milliseconds earlier in the 2003 event than in the 1993 event. Such changes indicate that Earth's inner core radius enla...
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Compressional seismic wave reflected off the Earth's inner core boundary (ICB) from earthquakes occurring in the Banda Sea and recorded at the Hi-net stations in Japan exhibits significant variations in travel time (from -2 to 2.5 s) and amplitude (with a factor of more than 4) across the seismic array. Such variations indicate that Earth's ICB is irregular, with a combination of at least two s...
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We consider a semi-infinite material that is initially assumed to be liquid at its melting temperature which, without loss of generality, we assume at 0 C. At time t 0 , a heat flux (characterized by the constant 0 q 0 ) is imposed at x 0 and then solidification ensues, where three distinct regions can be distinguished (for a complete description of this mushy model see [1]): H1) Liquid, ...
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ژورنال
عنوان ژورنال: Nature Communications
سال: 2017
ISSN: 2041-1723
DOI: 10.1038/s41467-017-00229-9