Why a big 2-D array to record microseisms?
, by Jon Claerbout, Steve Cole, Dave Nichols, and Lin Zhang
We plan to set out a two-dimensional seismic array, with our 200 group
recorders. The initial goal is to measure an emergent angle spectrum
of the microseismic noise. Our array will be designed to attenuate
surface-travelling noise as musch as possible. The dominant steeply
emerging energy is expected to be generated by the ocean surf20km distant.
Such energy should enable imaging by the theorem that the (slant stacked)
autocorrelation of the microseism is the reflection seismogram. Ultimately
we hope to reproduce a portion of a conventional reflection image, and
extend it in frequency or depth.
STANFORD