亚东—格尔木地学断面区域磁异常数据处理与地体划分

本文首先介绍了航磁数据的预处理；介绍了视磁化率填图方法及对浅层、深层视磁化率进行了综合分析，进行了方向滤波及长波磁异常的分析处理，讨论了航磁数据图象处理及其有关向题，最后提出了地体划分意见：由5条边缘断裂分割成６个地体。

REGIONAL MAGNETIC DATA PROCESSING AND TERRANE DIVIDING IN THE AREA OF THE GEOSCIENCE TRANSECT FROM YADONG TO GOLMUD

This paper introduces the data processing results of the aeromagnetic anomalies over an area about one million square kilometres in Qinghai-Xizang plateau. Before processing, the aeromagnetic anomalies are normally recorrected based on the International Geomagnetic Reference Field (IGRF) in agreement with the demand of the International Lithosphere Geoscience Transect Project. The processing methods used here include apparent magnetic susceptibility mapping, long-wave component extracting, direction filtering and digit image processing. Based on the processing results, the distribution of the fracture zones and the dividing of terranes in the processing area are discussed. Some fundamental information has been derived for the synthetical study of the geological belt from Yadong to Golmud.