Open AccessThe Frequency‐Depth Relation for South Australian Earthquakes
Author(s) -
Stewart Ian C. F.
Publication year - 1972
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1972.tb02204.x
Subject(s) - geology , crust , discontinuity (linguistics) , continental crust , seismology , boundary (topology) , mode (computer interface) , geophysics , mathematics , mathematical analysis , computer science , operating system
Summary An empirical relation has been derived for the number of earthquakes occurring at a given depth in the South Australian crust. There is no significant deviation of the expression from a theoretical curve (derived here on certain assumptions) below 20–25 km depth. However energy considerations suggest that a transition may occur at this depth in the mode of stress release. There is no significant evidence for a boundary in the crust equivalent to the Conrad discontinuity observed in continental crusts elsewhere.