...Figure 8. Same as Figure  6 but for the time interval of atmospheric Pekeris waves. The color version of this figure is available only in the electronic edition. ...

...MILTON B DOBRIN Abstract The normal-mode theory of Pekeris has been applied to the water-wave dispersion recorded from the under-water explosions set off in the 1946 seismic-refraction shooting in Bikini lagoon. The aim was to ascertain from the dispersion data the velocity of sound...

...Hugo Benioff Abstract Strain seismograms of the Montana shallow earthquake of August 17, 1959 recorded at Isabella, California have the wave pattern predicted in 1904 by Lamb for a surface pressure pulse. This is equivalent to a dipole source such as given by the vertical bilateral fault slip which...

... are Now, let us investigate the effects of fluid pressure on normalized so that the arrival time of the S wave is unity. solid displacement. The time histories of solid displacement The delays of the Rayleigh waves can be predicted using the are compared with the solution provided by Pekeris and Lif...

...E. R. Kanasewich; P. G. Kelamis; Flavian Abramovici Abstract Cagniard-Pekeris method. The weathered layer is modeled as a thin low-velocity layer over a half-space. For a horizontal force in an arbitrary direction, the transverse component, in the near-field, shows detectable first arrivals...

...F. Schwab; J. Frez; G. F. Panza; A. H. Liao; E. G. Kausel abstract In this algorithmic and numerical analysis of Rayleigh-wave dispersion computations on a spherical, gravitating earth, we first simplify and optimize the existing algorithms based on the direct, Alterman-Jarosch-Pekeris ( AJP...

... constituents enables us to separate the real-time contributions due to head waves, geometrical waves and the so-called non-least-time arrivals. INTRODUCTION The Cagniard-Pekeris method of obtaining the time-dependent response of two elastic half-spaces in welded contact along a plane boundary was originally...

...Frank Press; Maurice Ewing; Ivan Tolstoy Abstract An extension of the theoretical work of Lamb and Pekeris shows that a prominent phase (Airy phase) consisting of a group of waves of period 9-11 seconds, traveling across the ocean with a velocity of approximately 0.7 of the speed of sound in water...

.... The use of singular integrals in wave propagation problems; with application to the point source in a semi-infinite elastic medium , Proc. Roy. Soc., A , 276 204 - 237 , 1963 . 2. Pekeris C.L. The seismic surface pulse , Proc. Nat...

... the phenomenon of the dispersive water wave. This effect was subsequently interpreted by Pekeris 2 in terms of the normal mode theory of propagation of explosive sound in a layered liquid. The theory predicted the existence of additional features in the pressure records, such as a forerunner ground wave...

...C. L. Pekeris; Z. Alterman; F. Abramovici Abstract In this investigation we determine the motion of the surface of a layered elastic half-space produced by a torque-pulse from a point-source situated inside the layer. The axis of the torque is vertical ( SH ) and its time variation is represented...

... (1962), and a concentrated vertical force at depth by Pinney (1954), Pekeris (1955b), and Pekeris and Lifson (1957). The latter paper confirmed th~ surface-diffracted P and S pulses for a buried point source suggested originally by Nakano 0925). The wave systems produced by a moving surface source have...

... H. Pekeris C. L. 1961 . Propagation of Rayleigh Waves in the Earth , Geophysical J. , 4 : 219 - 241 . Backus G. Gilbert...

... between the layer and the half- space. However, for the S waves generated at the source there is another possibility: they may be reflected at the free surface as P waves propagating along this surface (Pekeris, 1955b). For such rays t~ = 0, i.e., no other reflection such as P is present, whereas ~ may...

... , Band 30 , 336 - 350 . Knopoff L. 1958 . Love Waves from a Line SH -Source , J. Geoph. Res. , 63 : 619 - 663 . Pekeris C. L. 1955a . The Seismic Surface...

... 64 31.9 117.1 20-54-35 [] 13 Sep 63 37.1 116.0 17-00-00 NTS, BILBY FIG. 2. LRSM recording sites and event locations. LONG-PERIOD BODY-WAVE PROPAGATION FROM 4 ° TO 13° 327 MODEL STUDY In this section, we review the work of Pekeris and his colleagues and demonstrate the applicability of an approximate...

... Z. Jarosch H. Pekeris C. L. 1961 . Propagation of Rayleigh Waves in the Earth , Geophysical J. , 4 : 219 - 241 . Benioff...

... solutions of case 3 is found The solution for Lamb's problem for the case of a to be improved in the range of the S-wave arrival and material with a Poisson's ratio of one-quarter was de- the static offset because of the step function, when com- rived by Pekeris and Lifson (1957). Harvey also ob- pared...