title: Excitation of surface waves by events in southern algeria.
abstract: Surface-wave magnitudes (M(8)) of 4.1 and 3.2 are determined for two events in southern Algeria. The corresponding body-wave magnitudes (m(b)) are 5.8 and 4.9, respectively. The surface waves from these events are much smaller than would be expected from most earthquakes of comparable body-wave magnitudes, which fact suggests that these waves were generated by underground explosions.
authors.forename: R C
authors.initials: RC
authors.lastname: Liebermann
authors.forename: P W
authors.initials: PW
authors.lastname: Pomeroy