ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] The P velocity distribution in the Earth is such that PKP waves originating at a surface focus form a caustic surface which intersects the core-mantle boundary and the Earth's surface at angular distances of 117.5 and 143 respectively (Fig. 1). (Times and distances given here are based on the ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/240549a0
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