Research of geomagnetic spatial-temporal variations in China by the NOC method

被引：14
|
作者：
Gu Zuo-Wen [1 ]
Chen Bin [1 ]
Gao Jin-Tian [1 ]
Xin Chang-Jiang [2 ]
Yuan Jie-Hao [1 ]
Di Chuan-Zhi [1 ]
机构：
[1] China Earthquake Adm, Inst Geophys, Beijing 100081, Peoples R China
[2] Lanzhou Geomagnet Observ, Lanzhou 730000, Peoples R China
来源：
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION | 2009年 / 52卷 / 10期
关键词：
Geomagnetic spatial-temporal variations; Natural orthogonal components (NOC); China Geomagnetic Model (CGM); China; REFERENCE FIELD; SECULAR VARIATION; MODEL;
D O I：
10.3969/j.issn.0001-5733.2009.10.020
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
The geomagnetic data at 36 observatories in China during 1995 similar to 2006 were calculated by using the natural orthogonal component (NOC) method. We have obtained the eigenvalues and their corresponding eigenvectors in the space and time domains for the above-mentioned data matrix. A comparative analysis between its spatial-temporal distribution and the China Geomagnetic Model (CGM) is made, and its physical meaning is studied. The research shows that the these observational data contain rich information of the internal and external geomagnetic source fields. The first and the second eigenvalues of the geomagnetic field components F, D and I, and the temporal variations of the geomagnetic main field described by the first and the second eigenvalues of the corresponding spatial-temporal domains coincide fairly well with the CGM.
引用
收藏
页码：2602 / 2612
页数：11
相关论文
共 43 条
  • [1] ON REGIONAL GEOMAGNETIC CHARTS
    ALLDREDGE, LR
    [J]. JOURNAL OF GEOMAGNETISM AND GEOELECTRICITY, 1987, 39 (12): : 723 - 738
  • [2] GEOMAGNETIC LOCAL AND REGIONAL HARMONIC ANALYSES
    ALLDREDGE, LR
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH, 1982, 87 (NB3): : 1921 - 1926
  • [3] An Z C, 1993, Acta Geophysica Sinica, V36, P753
  • [4] New gravity and magnetic anomaly maps of Turkey
    Ates, A
    Kearey, P
    Tufan, S
    [J]. GEOPHYSICAL JOURNAL INTERNATIONAL, 1999, 136 (02) : 499 - 502
  • [5] Barton C. E., 1988, Exploration Geophysics, V19, P401, DOI 10.1071/EG988401
  • [6] International geomagnetic reference field: The seventh generation
    Barton, CE
    [J]. JOURNAL OF GEOMAGNETISM AND GEOELECTRICITY, 1997, 49 (2-3): : 123 - 148
  • [7] Regional orthogonal models of the geomagnetic field changes over the Far East
    Burdelnaya, IA
    Filippov, SV
    Golovkov, VP
    Fujiwara, S
    Tanabe, T
    Nishi, S
    Kaidzu, M
    Matsuzaka, S
    [J]. EARTH PLANETS AND SPACE, 1999, 51 (04): : 287 - 296
  • [8] Interpretation of the gravity and magnetic anomalies of the Cappadocia region, Central Turkey
    Büyüksaraç, A
    Jordanova, D
    Ates, A
    Karloukovski, V
    [J]. PURE AND APPLIED GEOPHYSICS, 2005, 162 (11) : 2197 - 2213
  • [9] Campbell W.H., 2003, Introduction to Geomagnetic Fields, V2nd ed.
  • [10] CHEN Z, 1944, SCI B, V1, P9
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