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Seismotectonics of the Guinean Earthquake of December 22, 1983
Author(s) -
Dorbath C.,
Dorbath L.,
Gaulon R.,
George T.,
Mourgue P.,
Ramdani M.,
Robineau B.,
Tadili B.
Publication year - 1984
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/gl011i010p00971
Subject(s) - intraplate earthquake , geology , seismology , sinistral and dextral , seismotectonics , stress field , foreshock , crust , fault (geology) , geophysics , tectonics , aftershock , physics , finite element method , thermodynamics
Field geological and seismological investigations conducted after the Guinean earthquake on December 22, 1983 show a shallow dextral strike‐slip fault with a large normal component. The NW‐SE horizontal compressive stress deduced from this event is consistent with measurements made at other places in this region. Old fissures, some of them reactivated during this earthquake, show that this intraplate area constitutes a localized weakness zone in the crust.