High-Frequency P n Phases Observed in the Pacific at Great Distances
- 15 July 1977
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 197 (4300) , 257-259
- https://doi.org/10.1126/science.197.4300.257
Abstract
Earlier observations of a seismic waveguide in the northwestern Pacific with a velocity of 8.3 kilometers per second to distances of approximately 30° are complemented by suggestions of a possible waveguide with a velocity of 7.8 kilometers per second to distances well in excess of 30°.Keywords
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