SEGJ Technical Conference

Feasibility of short-time, miniature two-point microtremor arrays

Abstract We have examined the feasibility of miniature, short-time two-point microtreomr arrays, by the use of microtremor data from 463 four-point arrays having radius of 0.6 m with observation durations about 15 min. More concretely, we extracted all pairs of seismographs from each four-point array, and applied a two-point array method to each paer. Then we calculated the misfit between the analysis results by a two-point method and those obtained by applying a standard SPAC method to the corresponding four-point array data. It is revealed that about half of the analysis results by a two-point method had an adequate accuracy.