Transient Behavior of Patterns*
A simple method is described for computing the waveform to be expected from a closely-spaced pattern of shots or geophones when the individual signal is a pulse. Four strength distributions are compared, and the case of uniform strength along the pattern is discussed in detail. It is concluded that if the individual signal is a short pulse, such as a seismic reflection, then the performance of the pattern is quite comparable for the four source distributions considered.
Figures & Tables
Seismic Wave Propagation: Collected Works of J. E. White
This first chapter sets the stage for the later technical development of Dr. Whit’s career in applied seismics. Experiments, f’wst at the Acoustics Laboratory of the Massachusetts Institute of Technology and later at Mobil Oil and Marathon Oil, provided insight into the general problems of impedance measurements, transduction, filtering, and attenuation. These papers also serve as a bridge to show geophysicists how theft own experiments in seismology naturally interface with (indeed, arose out of) the larger world of sound measurements in air and water. These experiments demonstrate the power of geometrically constrained experiments to allow verification of approximate (and in some cases, exact) theories of sound.