海底日变数据初探

发布时间：2018-02-21 12:04

本文关键词： 日变改正海底纬度水深　出处：《地质论评》2017年S1期 　论文类型：期刊论文

【摘要】：正海洋磁力数据处理主要包括剔除奇异点、地磁日变、船磁方位改正、数据滤波等,地磁日变和船磁方位改正是影响磁测数据精度的主要因素,而船磁改正又会受日变改正精度的影响,因此日变改正对于海洋磁测而言至关重要。对海洋磁力日变改正而言,在近海区域我们可以采用沿岸的地磁台站的日变数据进行日变改正处理,这在一定程度上削弱了地磁日变对磁测精度的影响;在远海,显然超出了陆地地磁台的控制范围,近年来出现了多台站地磁日变改正技术,构造
[Abstract]:Positive ocean magnetic data processing mainly includes eliminating singularity, geomagnetic diurnal variation, ship magnetic azimuth correction, data filtering and so on. Geomagnetic diurnal variation and ship magnetic azimuth correction are the main factors that affect the precision of magnetic survey data. And the ship magnetic correction will be affected by the accuracy of the diurnal variation correction, so the daily variation correction is very important for the marine magnetic measurement. In the offshore area, we can use the daily variation data of the coastal geomagnetic station to correct the daily variation, which to some extent weakens the influence of the geomagnetic diurnal variation on the magnetic measurement accuracy. In the far sea, it is obviously beyond the control range of the terrestrial geomagnetic station. In recent years, the technique of correction of geomagnetic diurnal variation has appeared in many stations.
【作者单位】：广州海洋地质调查局;浙江省地球物理地球化学勘查院;青海省地质调查局;
【分类号】：P738.3

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