1887

Abstract

A high-fidelity marine seismic vibrator would allow control of the phase of the seismic source wavefield. Phase control can be used to encode high-multiplicity simultaneous-source data. By changing the phase of the source wavefield from shot-to-shot following a prescribed sequence of phase delays, energy from selected sources can be coherently shifted into different parts of the frequency-wavenumber spectrum in the common-receiver domain. Results of this approach are demonstrated using realistic synthetic examples. A comparison with the more conventional time-dithered air-gun approach indicates that the phase sequencing approach gives an improved result, with a lower separation error. The phase sequencing approach cannot be used as effectively with air guns because they only allow changes to the overall time delay of the source.

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/content/papers/10.3997/2214-4609.201802105
2018-08-22
2024-03-29
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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201802105
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