Temporal-spatial analyses of the geomagnetic field in China based on IGRF12

Temporal-spatial analyses of the geomagnetic field in China based on IGRF12
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基于IGRF12的中国地磁场时空分析

DOI:
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发表时间:
2015
期刊:
World Journal of Modelling and Simulation
影响因子:
--
通讯作者:
Hanyu Chen
Hanyu Chen
中科院分区:
其他
文献类型:
--
作者:
Yi Jiang;Yong Jiang;Yan Feng;Baojia Liu;Kai Zhao;Shuai Fu;Hanyu Chen

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相似文献

基于最新的第12代国际地磁参考场(IGRF 12)模型,分析了2010年中国及邻区地磁场的时空变化,IGRF 12与IGRF 11的差异,以及2010-2015年两个模型地磁场长期变化的差异,此外,还研究了北京站和兰州站IGRF 12与INTERMAGNET观测资料长期变化的误差。最后利用IGRF 12计算了2010-2015年和2015-2020年的地磁长期变化,并进行了比较。结果表明,2010-2020年期间,IGRF 12地磁场长期变化呈现线性变化。由于建模原理相同,两个模型之间的差异很小,元素X、Y、Z、F、H的绝对差值小于7 nT,D、I的绝对差值小于0.009º。两种模型的年变化率分布相似。但由于建立模型所需的测量数据不同,两种模型在局部地区存在一定差异,如Y和D的中东部地区,Z和F的西南部地区。测量数据与IGRF 12有明显差异,其原因是区域磁异常、未考虑外场、IGRF的截断阶数和地磁台站测量误差等。
Based on the newest 12th International Geomagnetic Reference Field (IGRF12) model, we have.analyzed the temporal-spatial changes of geomagnetic field over China and its adjacent regions, the differences.between IGRF12 and IGRF11 in 2010.0, The differences of geomagnetic secular variation between two.models during 2010–2015, in addition the errors of secular variation between IGRF12 and the INTERMAGNET.measuring data in Beijing and Lanzhou stations were also researched. Finally, the geomagnetic secular.variation were calculated and compared by IGRF12 between 2010–2015 and 2015–2020. Results show that.geomagnetic secular variation in China by IGRF12 presents linear variation during 2010–2020. Due to the.same modeling principle, so that the difference between two models is slight, the absolute difference values.of elements X, Y , Z, F, H are less than 7nT and that of D, I are less than 0.009º. The distribution of.annual change rate of two models is similar. However, because of the measuring data that to create models.are different, two models partially differ in local areas, such as the middle and eastern areas of Y and D,.the southwestern areas of Z and F. There are obvious differences between measuring data and IGRF12, the.reasons include the regional magnetic anomalies, not take into account the external field, the truncation order.of IGRF and the measuring errors at geomagnetic stations.
DOI: --
发表时间: 2003
期刊: Chinese Journal of Geophysics
影响因子: --
作者:
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通讯作者: D. Wang
DOI: 10.1007/978-3-540-38366-6_32
发表时间: 2003
期刊: --
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作者:
R. Holme;N. Olsen;M. Rother;H. Lühr
通讯作者: R. Holme;N. Olsen;M. Rother;H. Lühr
DOI: 10.1007/pl00001062
发表时间: 2000-10
影响因子: 2
作者:
E. Thebault;Cc Finlay;H. Toh
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DOI: 10.1111/j.1365-246x.2010.04804.x
发表时间: 2010-12-01
影响因子: 2.8
作者:
Finlay, C. C.;Maus, S.;Zvereva, T. I.
通讯作者: Zvereva, T. I.
DOI: --
发表时间: 2012
期刊: --
影响因子: --
作者:
DI Chuan-zhi
通讯作者: DI Chuan-zhi