UPPER MANTLE STRUCTURE IN CANADA FROM SEISMIC OBSERVATIONS USING CHEMICAL EXPLOSIONS

Autor:	K. G. Barr
Rok vydání:	1967
Předmět:	Transition zone General Earth and Planetary Sciences Geophysics Classification of discontinuities Bay Geology Seismology Physics::Geophysics
Zdroj:	Canadian Journal of Earth Sciences. 4:961-975
ISSN:	1480-3313 0008-4077
DOI:	10.1139/e67-066
Popis:	Long-range seismic observations at the standard Canadian seismic stations, from chemical explosions in Hudson Bay and Lake Superior, are used to derive a P-wave velocity structure for the upper mantle. The coordinates of observed cusps are used to define the structural discontinuities. These discontinuities are at depths of 126 and 366 km, which agree closely with the depths of the S-wave velocity discontinuities deduced from surface-wave observations. The observations do not require a low velocity layer in the upper mantle.
Databáze:	OpenAIRE
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