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Method of seismic surveying, a marine vibrator arrangement, and a method of calculating the depths of seismic sources
Method of seismic surveying, a marine vibrator arrangement, and a method of calculating the depths of seismic sources
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机译:地震勘测方法,船舶振动器布置以及计算地震源深度的方法
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摘要
A method of seismic surveying comprises emitting seismic energy at two or more different depths during a sweep. In one embodiment, the depth of a seismic source is varied during a sweep, by raising or lower the source while it is emitting seismic energy. In another embodiment, an array of two or more marine vibrators is used as the source of seismic energy, with the vibrators in the array being disposed at different depths. The invention allows notch frequencies in the amplitude spectrum to be eliminated, and allows improvements in both the spectral flatness and the amplitude at low frequencies.
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