The 1954 and 1980 Algerian earthquakes: Implications for the characteristic-displacement model of fault behavior
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Abstract
Joint epicenter determination of earthquakes that occurred in northern Algeria near Ech Cheliff (named Orleansville in 1954 and El Asnam in 1980) shows that the earthquake of 9 September 1954 (M=6.5) occurred at nearly the same location as the earthquake of 10 October 1980 (M=7.3). The 1954 main shock and earliest aftershocks were concentrated close to the boundaries of segment B (nomenclature of Deschamps et al., 1982; King and Yielding, 1984) of the 1980 fault system, which was to experience approximately 8 m of slip in the 1980 earthquake. Later aftershocks of the 1954 earthquake were spread over a broad area, notably in a region north of the 1980 fault system that also experienced many aftershocks to the 1980 earthquake. The closeness of the 1954 main shock and earliest aftershocks to the 1980 segment B implies that the 1954 earthquake involved either 1) rupture of segment B proper, or 2) rupture of a distinct fault in the hanging wall of footwall block of segment B.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | The 1954 and 1980 Algerian earthquakes: Implications for the characteristic-displacement model of fault behavior |
| Series title | Bulletin of the Seismological Society of America |
| DOI | 10.1785/BSSA0810020446 |
| Volume | 81 |
| Issue | 2 |
| Year Published | 1991 |
| Language | English |
| Publisher | Seismological Society of America |
| Description | 22 p. |
| First page | 446 |
| Last page | 467 |
| Country | Algeria |
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