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业已证明,用常规反射地震勘探法记录下来的折射波和反射波来确定速度,是一有效的方法。详细绘出自海底至其下约500米深度的沉积物中的速度图,是可能的。在这种情况下,我们研究了对常规反射地震勘探法得到的每次爆炸资料进行处理、显示和分析的方法。对所显示的爆炸资料加以解释并用反射波、折射波以及反射-折射波进行模拟,以便使所处理的野外记录相拟合。其结果就是一个详细的速度模型。我们曾对挪威北部的巴伦斯海的一条长500米、26次覆盖的反射地震测线作了研究。记录下来的数据具有高速、多次波和各种不同类型的噪音。沿这条测线我们共分析了34个“折射剖面”。按反射波数据可见,浅层界面的反射波完全与地层界面有关。沿这条剖面还确定了速度的横向变化。业已证明这项
It has proven effective to determine the velocity using refracted and reflected waves recorded by conventional reflection seismic surveys. It is possible to sketch the speed map in detail from the seabed to the sediment about 500 meters below it. In this case, we studied the method of processing, displaying, and analyzing each burst of information obtained by conventional reflection seismic surveys. The explosion information displayed is interpreted and simulated with reflected waves, refracted waves, and refracted waves to match the field records processed. The result is a detailed speed model. We have conducted a study of a reflection 500 km long, 26 times covered seismic reflection survey in the Barrens Sea in northern Norway. The recorded data has high speed, multiples and various types of noise. We have analyzed 34 “refraction profiles” along this line. According to the reflected wave data, it can be seen that the reflected wave of the shallow interface is completely related to the formation interface. Along this section also determines the speed of the lateral changes. This has been proven