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Temporal variation in the attenuation of earthquake coda near Stone Canyon, California
Author(s) -
Chouet Bernard
Publication year - 1979
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/gl006i003p00143
Subject(s) - coda , canyon , seismology , geology , attenuation , period (music) , geomorphology , physics , acoustics , optics
We present evidence of a temporal trend in the attenuation properties of the high frequency coda of local earthquakes near Stone Canyon, central California. The trend appears as a systematic increase in the energy content of the coda of earthquakes with similar magnitudes and locations over a period of about a year. Present theoretical interpretations of the coda do not satisfactorily explain this observation. Possible explanations are considered.