Normal mode splitting due to inner core attenuation anisotropy
نویسندگان
چکیده
منابع مشابه
Inner core attenuation anisotropy
We investigate the attenuation structure of the Earth's inner core and its relationship to the velocity structure globally and along various sampling directions, by studying the amplitude ratios and the differential travel times of the PKiKP–PKIKP and PKPbc– PKIKP phases. Our observations reveal that the amplitude ratios of these core phases, like the differential travel times, vary in both sam...
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■ Abstract This paper reviews recent research focused on the Earth’s inner core. Large inner-core traveltime anomalies and the anomalous splitting of core-sensitive free oscillations strongly suggest that the inner core is anisotropic. Initial models involved a simple, constant or depth-dependent cylindrical anisotropy at a level less than a few percent. Recent observations suggest that its eas...
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ژورنال
عنوان ژورنال: Geophysical Journal International
سال: 2013
ISSN: 1365-246X,0956-540X
DOI: 10.1093/gji/ggt332