System of Volcanic activity



A comparison is made among the systems of B. G.
Escher (3), of R. W. van Bemmelen (1) and that of the author (4). In this
connection, on the basis of Esclier's classification, the terms of "constructiv
e " and "destructive" eruptions are introduced into the author's system and
at the same time Escher's concept on the possible relation between the depth
of magma-chamber and the measure of the gas-pressure is discussed briefly.
Three complementary remarks to the first paper (4) 011 the subject of system
of volcanic activity are added.

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Published by INGV, Istituto Nazionale di Geofisica e Vulcanologia - ISSN: 2037-416X