Increasing the length of a land streamer by multiple shots

We propose an acquisition geometry to increase the length of land streamers two or more times by using more than one source located at offsets equal to 2x or more of the original length of the streamer, respectively. The signal-to-noise ratio of the far-offset refractions are boosted using refraction interferometry. Field data are recorded to show the feasibility of this approach and to compare the land streamer traces to those recorded by planted receivers. First arrival traveltimes and the frequency-wavenumber content for both data sets are compared to one another. The goal is to use land streamer data with multiple sources as a fast method for accurately estimating shallow velocity models for statics corrections and engineering applications.