Direct statics estimation from ground-roll data

• Statics correction can be computed by inverting the dispersion curves of surface waves (groundroll). • Inversion results generally require intensive processing and are affected by solution nonuniqueness. Here, we directly estimate the statics correction from the dispersion curves of surface waves, without the need for inverting the data. This...

Low-frequency SNR improvement of refracted waves by cascaded correlation and convolution

Seismic interferometry is the process where new impulse responses, i.e. Green’s functions, are retrieved between two points by cross-correlation, convolution or deconvolution of wavefield responses. Seismic interferometry is also referred to as Green’s function retrieval. Newly retrieved Green’s function might contain spurious events that arise...

Merging active and passive seismic reflection data with interferometry by multidimensional deconvolution

Seismic interferometry, also referred to as Green's function retrieval by crosscorrelation, is a technique with many applications, such as for the reconstruction of surface seismic, VSP, to Ocean-Bottom data using active or passive data. Due to the impurity of the Green's function retrieved in the presence of one-sided illumination or intrinsic...