地面三分量磁测的观测误差分析
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摘要
全空间直接测量地磁总场、磁偏角和磁倾角(或X、Y和Z)三个分量参数,在我国主要是应用于地震台站的基本台网中,而移动式的三分量测量还基本没有得到应用。但从矿产勘查方面来说,移动式的测量磁场三分量可以扩大磁法勘探的应用范围,即使在坑道等特殊的地区也可以得到应用。它克服测量参数的单一,提高磁测信息量,有利于资料的解释。本文是对使用FVM400三分量磁力仪进行模型试验的总结,侧重分析了测量程序对磁测数据质量的影响因素和野外工作主要注意事项。
Direct measurement of the whole space for the total magnetic field,magnetic declination and magnetic inclination(or X,Y and Z),namely the three-component parameters are mainly used on the basic network of the seismic stations in our country.However,the movable measurement of the three-component has seldom been applied to.As to mineral exploration,movably measuring three-component of magnetic field can expand the application scope of magnetic exploration,and even can still be applied in tunnels and other special areas.Also,it can overcome the singleness of the measurement parameter and improve the magnetic information quantity,which is helpful to the interpretation.This paper summarizes the model test of using FVM400 three-component magnetometer,and focuses on analyzing the impact of measurement procedure on the quality of magnetic data and the considerations of the magnetometer used in the field.
Direct measurement of the whole space for the total magnetic field,magnetic declination and magnetic inclination(or X,Y and Z),namely the three-component parameters are mainly used on the basic network of the seismic stations in our country.However,the movable measurement of the three-component has seldom been applied to.As to mineral exploration,movably measuring three-component of magnetic field can expand the application scope of magnetic exploration,and even can still be applied in tunnels and other special areas.Also,it can overcome the singleness of the measurement parameter and improve the magnetic information quantity,which is helpful to the interpretation.This paper summarizes the model test of using FVM400 three-component magnetometer,and focuses on analyzing the impact of measurement procedure on the quality of magnetic data and the considerations of the magnetometer used in the field.
引文
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[2]管志宁,郝天珧,姚长利.21世纪重力与磁法勘探的展望[J].地球物理学进展,2002,17(2):237~244.
[3]丁鸿佳,隋厚堂.磁通门磁力仪和探头研制的最新进展[J].地球物理学进展.2004,19(4):743~745.
[4]管志宁.我国磁法勘探研究和进展[J].地球物理学报,1997,40(增刊):299~307.
[5]张昌达.航空磁力梯度张量测量及其应用——航空磁测技术的最新进展[A].中国海洋学会军事海洋学专业委员会第二届军事海洋战略与发展论坛[C].武汉,2005.
[6]管志宁.磁法勘探的发展趋势[M].北京:地震出版社,1996,52~58.
[7]张昌达.航空磁力梯度张量测量——航空磁测技术的最新进展[J].工程地球物理学报,2006,3(5):354~361.
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