منابع مشابه
Bulletin of the Seismological Society of America
Observations of Love and Rayleigh waves on WWSSN and Canadian Network seismograms have been used to place constraints upon the source parameters of the August 1, 1975, Oroville earthquake. The 20-sec surface-wave magnitude is 5.6. The surface-wave radiation pattern is consistent with the fault geometry determined by the body-wave study of Langston and Butler (1976). The seismic moment of this e...
متن کاملBulletin of the Seismological Society of America
In the course of historical or statistical study of earthquakes in any given region i t is frequently desirable to have a scale for rating these shocks in terms of their original energy, independently of the effects which may be produced at any particular point of observation. On the suggestion of Mr. H. O. Wood, it is here proposed to refer to such a scale as a "magnitude" scale. This terminol...
متن کاملBulletin of the Seismological Society of America
THE RESPONSE of hitherto known practical forms of seismographs depends upon the relative motion of a pendulum and the moving ground to which ~ts supporting structure is fastened. The various kinds of seismographs differ in the type of pendulum used, such as gravity, spring, torsion, and/or they differ in the type of magnifying and recording elements which they employ. They all measure or indica...
متن کاملOf the Seismological Society of America Blasts
Seismographic registration of vibratory earth motion was begun with an experimental torsion seismometer assembly at the laboratories of the Mount Wilson Observatory in Pasadena, California, in January, 1923. Not long af terward a second assembly was put into experimental operation at the Norman Bridge Labora to ry of Physics at the California Institute of Technology at Pasadena. Wi th many smal...
متن کاملBulletin of the Seismological Society of America
Near-source ground motion at four azimuths but constant epicentral range 1s computed from a buried circular strike-slip fault in a half-space. Particle acceleration, velocity, and displacement at each station on the free surface is computed in the frequency band 0.0 to 5.0 Hz. The assumed dislocation is denved from the Kostrov (1964) displacement function for a continuously propagating stress r...
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ژورنال
عنوان ژورنال: Nature
سال: 1915
ISSN: 0028-0836,1476-4687
DOI: 10.1038/095439a0