航磁全轴梯度数据地质解释优势研究

A Study of geological interpretation with the tri-axial aeromagnetic gradients

中国国土资源航空物探遥感中心成功研制出具有完全自主知识产权的航磁全轴梯度勘查系统,在中国的北部某地区进行了航磁全轴梯度测量飞行,获得了横向梯度、纵向梯度和垂向梯度数据.本文简要介绍了测区地质概况、飞行方案及数据处理等,重点对梯度数据在断裂构造划分等方面进行了探讨,认为航磁梯度数据比总场数据更加清晰显示构造走向,并比较了实测和转换的垂向梯度数据,结果表明实测垂向梯度在反映地质体边界等方面具有一定优势.

China Aero Geophysical Survey ＆ Remote Sensing Center for land and Resources successfully developed the tri axial aeromagnetic gradient system with self-owned intellectual property rights, and tested at the north area in China, gained the magnetic gradients data of three directions. We briefly describe the survey area geology, flight programs and data processing, and discuss the geological interpretation with gradient data. The interpretation results show that the gradient data could more clearly reflect the structural trend and the measured vertical gradient data could better determine the geological boundaries than calculated vertical gradient data.