12. Imaging/Interpretation Frontiers
New Separation Method of Regional-residual Gravity Anomaly by Means of Geostatistical Spatial Filtering
Hyoungrae Rim, Yeong-Sue Park, Muteak Lim, Sung Bon Koo and Young Chal Lee
Korea Institutd of Geoscience and Mineral Resources, Korea.
Abstract
We propose a spatial filtering scheme using factorial kriging, a kind of geostatistical technique for separation of regional and residual gravity anomaly. It is based on the assumption that regional anomalies have longer distance relation and residual anomalies have an effect on a smaller range. Gravity anomaly was decomposed into two variogram models depending on each influence range. And best-fitted variogram models could produce the separated regional-residual anomalies by means of factorial kriging. This algorithm was examined with synthetic gravity data, and applied to real microgravity data for figuring out the abandoned mineshaft as well.
Last modified: Mon May 22 09:57:20 2006