海洋测绘2017，Vol.37Issue(5)：22-25,4.DOI:10.3969/j.issn.1671-3044.2017.05.004
不同方式地磁观测数据对磁测精度的影响分析
Analysis of Effects Made by Using Different Geomagnetic Observation Data upon Magnetic Measurement Precision
摘要
Abstract
The reasonable selection of diurnal magnetic correction data is directly related to marine magnetic survey data precision.This paper describes a 4000m long geomagnetic observation submerged buoy which is put in the southern South China Sea and the simultaneously surface magnetic survey.Based on the analysis and study of the marine diurnal variation data,surface magnetic data and land magnetic observatory data nearby,following conclusions are obtained.Firstly,when applying diurnal magnetic data to process marine survey data,the accuracy of shallow water data is better than that of deep water.What is more,the shallow water data has higher consistence with land magnetic observatory data than that of deep water.Secondly,whether the ship magnetism heading error correction curve is symmetrical or not is highly related to the reasonable selection of diurnal magnetic data.Lastly,for the sake of fully recording of local magnetic disturbance when executing marine magnetic survey in open sea,the marine magnetic diurnal observation device is recommended to deploy in shallow waters as close to working area as possible.关键词
海洋磁测/地磁日变校正/船磁影响校正/日变观测/测量准确度Key words
marine magnetic survey/diurnal magnetic correction/ship magnetism heading error correction/diurnal observation/measurement accuracy分类
天文与地球科学引用本文复制引用
廖开训,徐行,王功祥,张向宇,王劲松,赵强..不同方式地磁观测数据对磁测精度的影响分析[J].海洋测绘,2017,37(5):22-25,4.基金项目
国家重大科学仪器开发专项(2014YQ100817) （2014YQ100817）
国家自然科学基金(91028007). （91028007）
