2010.0年代蒙古地区地磁场曲面样条

陈斌; 袁洁浩; 王雷; 徐如刚; 倪喆; 顾左文; 冯丽丽

doi:10.3799/dqkx.2014.177

2010.0年代蒙古地区地磁场曲面样条

doi: 10.3799/dqkx.2014.177

陈斌^{1, 2},
袁洁浩¹,
王雷³,
徐如刚³,
倪喆⁴,
顾左文¹,
冯丽丽¹

1.
中国地震局地球物理研究所, 北京 100081
2.
美国地质调查局, 加利福利亚门罗帕克 94025
3.
安徽省地震局, 安徽合肥 230031
4.
云南省地震局, 云南昆明 530100

基金项目:

2011年度国家科技计划项目"远东地区地磁场、重力场及深部构造观测与模型研究" 2011DFB20120

2012年度地震行业科研专项经费项目"中国综合地球物理场观测-鄂尔多斯地块周缘地区" 201208009

国家留学基金委"2013年地震科技青年骨干人才培养项目" 201304190011

详细信息

中图分类号: P318.1+1, P318.1+3
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出版历程
- 收稿日期: 2014-04-03
- 刊出日期: 2014-12-01

Geomagnetic Field over Mongolia for 2010.0 Epoch Using Spherical Cap Harmonic Method

1.
Institute of Geophysics, China Earthquake Administration, Beijing 100081, China
2.
U.S. Geological Survey, Menlo Park, CA 94025, USA
3.
Earthquake Administration of Anhui Province, Hefei 230031, China
4.
Earthquake Administration of Yunnan Province, Kunming 530100, China

摘要

摘要: 蒙古为我国的北方重要邻国, 其境内的西蒙古构造块体为我国主要地震带——南北地震带的主要北端构造.应用曲面样条(SP)方法, 对蒙古地区119个野外地磁测点的观测数据进行了计算, 获得2010.0年代蒙古地区地磁场空间分布, 并与EMM2010.0模型给出蒙古地区地磁场空间分布进行比较.结果表明: 曲面样条方法建立的蒙古地区地磁场模型与EMM给出的地磁场描述的蒙古地区各地磁要素的空间分布基本类似, 但在局部地区存在一定差异, 该差异在局部地区能达到±30'(I), ±60'(D), ±500 nT(H、F、X、Y、Z).
- 地磁场 /
- 曲面样条方法 /
- 蒙古地区
Abstract: Mongolia is an important neighbor of northern China. Western Mongolia ancient tectonic is a major structure in north of north-south tectonic earthquake zone, one important earthquake zone in China. In this paper, surfaces spline (SP) method is used to calculate the geomagnetic data on 119 sites in Mongolia on 2010.0 epoch, and the geomagnetic spatial structure in Mongolia is obtained. The results show that the geomagnetic spatial distribution of magnetic components given by SP model and EMM is similar, but there are some differences in part. These differences can reach ±30' for I, ± 60' for D and ± 500 nT for H, F, X, Y, Z.
- geomagnetic field /
- surfer spline (SP) /
- Mongolia

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图 1 蒙古地区地磁野外测点分布

●表示测点；▲表示边界点

Fig. 1. The survey sites in Mongolia

下载: 全尺寸图片幻灯片

图 2 曲面样条方法和EMM模型描述的2010.0蒙古地区地磁场空间分布(单位：nT(F、H、X、Y、Z)，1°(D、I))

Fig. 2. The geomagnetic spatial structure in Mongolia by Surfer Spline and EMM model for 2010.0 epoch

下载: 全尺寸图片幻灯片

图 3 曲面样条方法和EMM模型描述的蒙古地区地磁场差异的空间分布(单位：nT(F、H、X、Y、Z)，1′(D、I))

Fig. 3. The geomagnetic spatial structure of deference between Surfer Spline and EMM model in Mongolia

下载: 全尺寸图片幻灯片

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