Analyzing buzzer-acquired physically-modelled data for FWI
Joe Wong, David C. Henley, Kristopher A. Innanen
We acquired physically-modelled seismic data within a homogeneous volume of water using piezoelectric buzzer transducers as sources and receivers. The recorded signals exhibited laboratory frequencies in the range 40kHz to 100kHz. After scaling, we obtained common-source seismograms with frequencies in the range 4Hz to 10Hz. The scaled frequencies are suitable for efficient full waveform inversion (FWI) in the seismic exploration world. However, the observed source/receiver wavelets are very long, and they are different for every source-receiver position. Both factors cause the buzzer-acquired seismic data to be ill-suited for efficient FWI imaging. We investigated time-domain filtering techniques for decreasing the time durations of the source/receiver wavelets and increasing the uniformity of their codas.