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从三十年代初期,地震反射波法首先用于石油勘探,直到七十年代后期,都只是应用纵波。陆上震源(炸药和各种不同的地面机械震源)主要产生纵波。在这种波型中,介质粒子位移平行于波传播方同,并且,大多是由于介质压缩所产生的,如炸药在井中爆炸,重锤冲击地面,或一种机械震源垂直地在地面振动产生纵波那样。相反,横波在传播过程中,介质
From the early 1930s, the seismic reflection wave method was first applied to petroleum exploration and only applied longitudinal waves until the late 1970s. Onshore sources (explosives and various ground-based mechanical sources) generate mainly longitudinal waves. In this wave pattern, the displacement of the media particles is parallel to the wave propagation and is mostly due to media compression such as explosives exploding in the well, the hammer striking the ground, or a mechanical source vibrating vertically on the ground producing a longitudinal wave That way. On the contrary, the shear wave in the medium of propagation