magnetic declination

Analysis and researches of the trend variation of magnetic declination component on Mengcheng Station

蒙城地震台地磁偏角分量趋势性变化分析研究

Seismic instrument orientation and magnetic declination

地震仪器定向与磁偏角

A method of automatically computing magnetic declination via the geomagnetic declination map

一种利用磁偏角地磁图自动计算磁偏角的方法

The Precursory Characteristics of Magnetic Declination and Its Time-magnitude Empirical Equation

磁偏角前兆特征与时间震级经验方程

Study and Analysis on Abnormal Changes in Magnetic Declination and Earthquake Precursory Anomaly at Mengcheng Magnetic Station

蒙城台磁偏角非正常变化与地震前兆异常的分析与研究

An imaginary line connecting points on the Earth 's surface where the magnetic declination is the same .

在地球表面上连结具有相同磁偏角各点的一条联线。

Yesterday , we talked about magnetic declination .

昨天我们谈到了磁场偏移。

The degree of difference between the positions of these two poles when seen at various locations is called magnetic declination .

在不同地点所观测到的这两个极位置之间的差异度数，被称为磁偏角。

So , a method of automatically computing magnetic declination based on 2D Lagrange interpolation via the geomagnetic declination map is presented .

因此，文中提出了一种利用磁偏角地磁图基于二维拉格朗日插值多项式的磁偏角自动计算方法，并详细论述了其原理。

From August , 2003 , the changes in magnetic declination of relative observation are large than that before at Mengcheng magnetic station .

蒙城地磁台相对观测磁偏角自2003年8月起，变化较大。

Furthermore , we found the magnetic declination affects the vertical drifts , and it leads to a better correlation with the irregularity occurrence with the vertical drifts for all seasons .

而且磁偏角会影响到四个季节的垂直上升漂移速度的变化，所以也会造成在其相对应的季节有不同的不规则体的产升机率。

Rock and ore body are different in their remanent magnetization and induced magnetization leading to different anomaly and different magnetic declination and magnetic inclination Therefore the difference can be used to judge the anomaly natures .

由于岩矿体剩余磁化强度与感应磁化强度的差异导致岩矿磁异常差异及磁偏角、磁倾角的不同，根据这一特征来判别异常性质。

The whisker was determined as α - SiC by means of electron diffraction and the direction of the whisker along axis was determined as < 1100 > with the method of calibration of relative magnetic declination .

借助电子衍射的方法确定该晶须为α-SiC；用相对磁偏转角校正的方法确定其轴向生长方向为<1100>。

The famous saentist Shen Kuo ( the author of Dream Creek Notes ) of the Northern Song Dynasty discovered the existence of magnetic declination ( the angu-lar devicrtion of a compass needle from true north ) ,

北宋著名科学家沈括（《梦溪笔谈》著者），在制作和应用指南针的科学实践中发现了磁偏角的存在。