Premium
Local earthquakes on three‐component seismographs: Heterogeneity in the aftershock zone of El Asnam, Algeria (10.10.1980, M = 7.3)
Author(s) -
Nercessian A.,
Sapin M.,
Hirn A.,
Wittlinger G.,
Djeddi M.
Publication year - 1983
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/gl010i008p00693
Subject(s) - aftershock , seismology , geology , seismogram , seismometer , epicenter , geodesy
Seismograms of aftershocks of the El Asnam earthquake recorded by three‐component stations of a local array provide direct evidence of structural heterogeneity in the aftershock zone. Inversion of arrival times for three dimensional velocity structure is thus needed for the relocation of hypocenters. These fall within a reduced depth interval from 6 to 12 km in the underthrust block.