国际地磁参考场

模型（BJ）和国际地磁参考场模型（IGRF）从理论上计算并分析了1690年以来地磁场能量在地球内部的分布及长期变化。

Jackson ( BJ ) and the International Geomagnetic Reference Field ( IGRF ), the distribution of geomagnetic field and its secular variation going back to 1690 year are calculated and analyzed theoretically .

利用BJ模型和国际地磁参考场（IGRF）模型资料，研究了地球主磁场的周期特点。

Based on the data of the Bloxham & Jackson Geomagnetic model ( BJ for short ) and the International Geomagnetic Reference Field ( IGRF ), the features of the geomagnetic main field periodicity are discussed .

用PC-1500型袖珍式计算机计算国际地磁参考场的方法和程序设计

A method and program design for calculation of international geomagnetic field by using PC-1500 type pocket-size computer

根据最新公布的第7代国际地磁参考场模型（IGRF），用4种方法计算1900～2000年的地球磁场的西漂，分析西漂的时间变化规律和不同纬度圈的漂移特点。

Based on the seventh generation of International Geomagnetic Reference Field models , the westward drift of geomagnetic field for 1900 & 2000 were calculated by using four methods and analyzed the variation features of with time and different latitudes .

IGRF（国际地磁参考场）是有关地球主磁场与长期变化的模型，IGRF的误差主要来源于：忽略外源场、球谐级数的截断、台站分布的不均匀、测量、忽略地壳磁异常场等。

IGRF ( International Geomagnetic Reference Field ) are the models of geomagnetic main field and secular variation . The IGRF errors are from neglecting external field , truncation level of the spherical harmonic series , observatory distribution , measurement , and neglecting the crust geomagnetic anomalies .

第七代国际地磁参考场的检验与评价

Examination and evaluation of international geomagnetic field for the seventh generation

国际地磁参考场在中国大陆地区的误差分析

Analysis of the international geomagnetic reference field error in the China Continent

国际地磁参考场资料在我国得到广泛应用。

The data of international geomagnetic reference field are widely used in China .

国际地磁参考场及其计算

International Geomagnetic Reference Field & Computation

地球磁场由国际地磁参考场和磁力异常场叠合建立。

Earth 's magnetic field is composition of International Geomagnetic Reference Field and magnetic anomaly field .

国际地磁参考场与局部地磁场模型的研究，具有深远的学科意义与巨大的实用价值。

The researches on international geomagnetic reference field model and regional geomagnetic field model have profound scientific significance and are of great practical value .

针对现有地磁场模型精度偏低、模型边界效应等问题，深入分析了传统补充国际地磁参考场值的缺陷。

Taking aim at lower precision and boundary effect of the current region geomagnetic field model , the shortage of appending the IGRF data to the regional boundary was analyzed deeply .

中国海域地球磁场模式为舰船消磁而建，由国际地磁参考场与网格节点描述的地壳场迭合形成。

The geomagnetic field model in China offshore area is built for ship 's demagnetization , which is overlapped by international geomagnetic reference field and the earth 's crust field described by the grid node .