Journal
GEOPHYSICAL RESEARCH LETTERS
Volume 34, Issue 11, Pages -Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1029/2007GL030041
Keywords
-
Categories
Ask authors/readers for more resources
[1] The use of local and regional S-wave coda is shown to provide stable amplitude ratios that better constrains source differences between event pairs. We first compared amplitude ratio performance between local and near-regional S and coda waves in the San Francisco Bay region for moderate-sized events, then applied the coda spectral ratio method to the 1999 Hector Mine mainshock and its larger aftershocks. We find (1) average amplitude ratio standard deviations using coda are similar to 0.05 to 0.12, roughly a factor of 3 smaller than direct S-waves for 0.2 < f < 15.0 Hz; (2) coda spectral ratios for the M-w 7.0 Hector Mine earthquake and its aftershocks show a clear departure from self-similarity, consistent with other studies using the same datasets; and (3) event-pairs (Green's function and target events) can be separated by similar to 25 km for coda amplitudes without any appreciable degradation, in sharp contrast to direct waves.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available