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浅水采集的资料中,浅层初至波能量很强,有效反射波都被淹没其中,无法清晰地识别反射波。在资料处理过程中,常规的方法是直接将初至波部分切除,然而在切除初至波的同时也切除了浅层有效反射波,损失了反映浅层构造的信息。本文利用τ-p变换的方法可以有效的衰减初至波,突出有效反射波,从而避免了浅层有效反射能量的丢失。实际资料应用表明,该方法取得了较好的效果。
In the data collected by shallow water, the energy of the first arrival wave in the shallow layer is very strong, and the effective reflected waves are all submerged therein, so that the reflected wave can not be clearly identified. In the process of data processing, the conventional method is to cut off the first-arrival wave directly. However, the first-arrival wave is also cut off while the shallow effective reflection wave is removed, and the information reflecting the shallow structure is lost. In this paper, τ-p transform method can effectively attenuate the first arrival wave, highlight the effective reflected wave, thus avoiding the loss of shallow effective reflection energy. The actual data shows that the method has achieved good results.