在实际工作中,斜坡地形比水平地形更为常见,野外队的不少同志希望能给出斜坡地形上进行异常延拓和Z_a、H_a互算的简便方法。以便现场使用。本文通过建立新座标系,讨论了在斜坡地形上对磁异常进行向上延拓和Z_a、H_a互算的理论和方法,分析了由Z_a计算H_a的幅值偏离问题,最后用实例说明方法的应用效果。关于新座标系中的正反演方法,将另文讨论。 In practical work, the slope topography is more common than the horizontal terrain, and many comrades in the field team hope to give a simple and convenient method for abnormal extension and Z_a, H_a mutual calculation on the slope topography. For on-site use. In this paper, by establishing a new coordinate system, the theory and method of upward extension of magnetic anomaly and interaction of Z_a and H_a on slope topography are discussed. The amplitude deviation of H_a calculated by Z_a is analyzed. Finally, an example is given to illustrate the application of the method effect. The method of inversion in the new coordinate system will be discussed separately.