论文信息 - Ground vibration near explosions.

Ground vibration near explosions.

Records are shown of the three components of ground vibration taken at distances out to 3284 meters following small explosions of dynamite about ten meters underground. The apparatus used to record this motion is described, and its limitations discussed. The refracted compressional waves recorded are used to calculate roughly the thickness of the near surface layers. Three principal dispersed waves are recognized and described. It is shown that two of these do not behave like any well known type of wave motion. It is pointed out that this is not surprising since the near surface material is probably neither homogeneous nor elastic and these conditions are required by the classical theories. The third dispersed wave is shown to closely resemble a modified Rayleigh wave. Three published theories of such modified motion are reviewed and compared with the observations. The recorded data are also compared with other similar records copies of which have been published.

B. F. Howell | Benjamin F. Howell

[1] J. A. Sharpe. The production of elastic waves by explosion pressures; II, Results of observations near an exploding charge , 1942 .

[2] R. Stoneley,et al. THE TRANSMISSION OF RAYLEIGH WAVES IN A HETEROGENEOUS MEDIUM , 1934 .

[3] H. Jeffreys. On the Surface Waves of Earthquakes. , 1925 .

[4] W. M. Ewing,et al. VELOCITY OF ELASTIC WAVES IN GRANITE , 1932 .

[5] Beno Gutenberg,et al. Handbuch der Geophysik , 1932 .

[6] L. Don Leet,et al. Ground vibrations near dynamite blasts , 1939 .

[7] Lee Ld. Earth motion from the atomic bomb test. , 1946 .

[8] F. S. Lamb,et al. On the Propagation of Tremors over the Surface of an Elastic Solid , 1904 .

[9] R. Stoneley,et al. The Effect of the Ocean on Rayleigh Waves , 1926 .

[10] Ch'eng Yi Fu. Studies on seismic waves; II, Rayleigh waves in a superficial layer , 1946 .

[11] R. Stoneley,et al. Elastic waves at the surface of separation of two solids , 1924 .

[12] B. Gutenberg. Energy ratio of reflected and refracted seismic waves , 1944 .

[13] L. Rayleigh. On Waves Propagated along the Plane Surface of an Elastic Solid , 1885 .

[14] Joseph A. Sharpe,et al. The Production of Elastic Waves by Explosion Pressures. I. Theory and Empirical Field Observations , 1942 .