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一、问题的提出经动静校正后的时间剖面,任意一道的时间为某一反射点的回声反射时。当界面水平时,绘制剖面的方法是很简单的,只要求出对应于x_1、x_2、x_3……x_i的法线深度h_1、h_2、h_3……h_i,并用它作半径,以1/2x_1、1/2x_2、1/2x_3……1/2x_i为圆心划弧,作这些弧的公共包络线,便为所求之反射界面。但是,当界面倾斜时,用同样的方法绘制剖面时,往往得到折线形式的界面,在下倾方向接收的观测点绘制的界面倾角变小,反之倾角变大,造成这种畸变的原因在于:当界面倾斜时,真实反射点R(见图1)所对应的地面位置不在1/2x处的N点,而是在M点。为此,在绘制倾斜界面时,必须找到反射
First, the problem proposed by the static and dynamic after the time profile, at any time for a reflection of the echo reflex point. When the interface is horizontal, the method of drawing the section is very simple, as long as the normal depths h_1, h_2, h_3 ... h_i corresponding to x_1, x_2, x_3 ...... x_i are obtained and used as the radii to 1 / 2x_1, 1 / 2x_2, 1 / 2x_3 ... 1 / 2x_i is the arc center of circle, and the common envelope of these arcs is the required reflection interface. However, when the interface is tilted, when the section is drawn in the same way, the interface in the form of a polygonal line is often obtained. The inclination of the interface drawn at the observation point received in the downtilt direction becomes smaller. On the contrary, the inclination becomes larger. The reason for this distortion is that when When the interface is tilted, the ground position corresponding to the true reflection point R (see Figure 1) is not at point N at 1 / 2x but at point M. For this reason, reflection must be found when drawing a slanted interface