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Structure de la croute terrestre en Algerie d'après les ondes sisiuiques



It has been tried to exploit in the best ways all data of<br />the algerian shocks till 1969 using the various documents and publications<br />found in the Seismological Center of Algiers. Various methods used for the<br />near shocks ( < 700 km) first and for the farther events later, show that:<br />— The velocities are: Pg = 5,55 km/s, Sg = 3,22 km/s, Pn = 7,77 km/s,<br />Sn = 4,32 km/s at least for the smaller distances; these velocities, relatively<br />little, become greater for distances above 800 km, which means certainly<br />a great increase of velocity in the upper mantle.<br />— There is no significant variations of velocity between the regions<br />of Algiers and Sótif.<br />— The algerian shocks are shallow: most of them have a depth less<br />than 15 km

Topics: Geophysics. Cosmic physics, QC801-809, Physics, QC1-999, Science, Q, DOAJ:Geophysics and Geomagnetism, DOAJ:Earth and Environmental Sciences, Meteorology. Climatology, QC851-999
Publisher: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Year: 1972
DOI identifier: 10.4401/ag-5108
OAI identifier: oai:doaj.org/article:9620e0ff00a84a3db1ff4ac21aef9252
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