Premium
A search for long‐term periodicities in large earthquakes of southern and coastal central California
Author(s) -
Stothers Richard B.
Publication year - 1990
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl017i011p01981
Subject(s) - geology , term (time) , seismology , period (music) , climatology , quantum mechanics , physics , acoustics
It has been occasionally suggested that large earthquakes may follow the 8.85‐year and 18.6‐year lunar‐solar tidal cycles and possibly the ∼ 11‐year solar activity cycle. From a new study of earthquakes with magnitudes ≥ 5.5 in southern and coastal central California during the years 1855–1983, it is concluded that, at least in this selected area of the world, no statistically significant long‐term periodicities in earthquake frequency occur. The sample size used is about twice that used in comparable earlier studies of this region which concentrated on large earthquakes.