Modelling of spatial-temporal changes of the geomagnetic field in Japan

被引：0
|
作者：
Xiaoli Ji
Mitsuru Utsugi
Hiroki Shirai
Akira Suzuki
Jinlan He
Satoshi Fujiwara
Yoshihiro Fukuzaki
机构：
[1] Geographical Survey Institute,Institute for Geothermal Sciences, Graduate School of Science
[2] Kyoto University,undefined
来源：
Earth, Planets and Space | 2006年 / 58卷
关键词：
Geomagnetic regional model; spatial-temporal model; secular variation; Natural Orthogonal Components; Spherical Cap Harmonic;
D O I：
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中图分类号：
学科分类号：
摘要：
A geomagnetic regional model is constructed to provide a spatial-temporal variation of three orthogonal components (X, Y, Z) in Japan. In order to obtain a high temporal and spatial resolution, Natural Orthogonal Components (NOC) analysis and Spherical Cap Harmonic (SCH) analysis were employed to produce a spatial-temporal model based on the observed data from geomagnetic observatories and continuous geomagnetic stations. Using this model, we calculated the secular variation between 1999 and 2004 in Japan. The root mean square (RMS) scatter of the model is less than 3 nT, which indicates a good agreement between calculated and input data.
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页码：757 / 763
页数：6
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