Geophysics and Geophysical Exploration ISSN:1229-1064(Print) 2384-051X(Online) 지구물리와 물리탐사

We formerly reported a new method for the upward continuation of potential field on spherical patch area including Earth’s curvature, which has been neglected in most studies on rectangular area with flat Earth assumption. This new method is applicable to downward continuation as well by only assigning corresponding value for the ratio of two radii; r2/r1, i.e., target radius r2 versus datum radius r1. In addition, the inherent problem of this method due to spherical surface geometry is described, and its one possible remedy is given.