重力梯度法中台阶倾角的确定与实际应用  

Step Angle of Gravity Gradient Method Determining and the Practical Application

作　　者：孙鹏飞[1] 吴燕冈[1] 

机构地区：[1]吉林大学地球探测科学与技术学院

出　　处：《金属矿山》2011年第11期116-119,共4页Metal Mine

基　　金：全国油气资源战略选区调查与评价项目(编号:XQ-2004-07);大庆探区外围区域地球物理场与中;新生代盆地构造特征项目(编号:XQ-2004-07-05)

摘　　要：在计算重力梯度时使用波数域,引入别列兹金滤波因子来压制求导过程的误差放大,理论模型试验表明其空间参量图更接近实际;通过对谐波数N和滤波因子指数n的选择,压制复杂地形中干扰源的影响,并阐述了N和n的关系;通过对Vzz和Vxz沿测线方向的水平求导来精确确定台阶转折点位置,并根据重力异常曲线和地质资料剔除无意义的波峰和波谷,减少计算工作量。This article used wave number space in the calculation of the gravity gradient,the introduction of B. M derivative filter factor to suppress the error amplification process. Model experiments show that the spatial parameters is closer to the aetual figure;Filtering the harmonic number N and the choice of filter factor index n to suppress interference sources in the complex terrain, and describe the relationship between N and n ; Gravity gradient method is usually the peak and trough for Vzz choice with the subjectivity of human experience,Author think by Vzz and Vxz of the lateral line along the horizontal direction of the derivative position to aceurately determine the level turning point,using gravity anomalies curves and geological data to eliminate meaningless peaks and troughs, to reduce the computational workload.

关 键 词：波数域重力梯度法 高阶导数 松辽盆地 别列兹金滤波因子 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]