DOI: 10.1002/2016GL068345
论文题名: Empirical evidence for latitude dependence and asymmetry of geomagnetic spatial variation in mainland China
作者: Lu S. ; Zhang H. ; Li X. ; Liu D. ; Wang X.
刊名: Geophysical Research Letters
ISSN: 0094-9027
EISSN: 1944-8758
出版年: 2016
卷: 43, 期: 9 起始页码: 4350
结束页码: 4357
语种: 英语
英文关键词: evidence
; geomagnetic asymmetry
; latitude dependence
; mainland China
Scopus关键词: Hidden Markov models
; Magnetic variables measurement
; Markov processes
; evidence
; geomagnetic asymmetry
; Geomagnetic variation
; latitude dependence
; Mainland chinas
; Spatio-temporal properties
; Statistical properties
; Statistical signatures
; Geomagnetism
; asymmetry
; convection
; data set
; geomagnetic field
; geomagnetism
; latitude
; outer core
; spatial variation
; spatiotemporal analysis
; China
英文摘要: Spatiotemporal geomagnetic variation is a significant research topic of geomagnetism and space physics. Generated by convection and flows within the fluid outer core, latitude dependence and asymmetry, as the inherent spatiotemporal properties of geomagnetic field, have been extensively studied. We apply and modify an extension of existing method, Hidden Markov Model (HMM), which is an efficient tool for modeling the statistical properties of time series. Based on ground magnetic measurement data set in mainland China, first, we find the parameters of HMM can be used as the geomagnetic statistical signature to represent the spatiotemporal geomagnetic variations for each site. The results also support the existence of the geomagnetic latitude dependence more apparently. Furthermore, we provide solid empirical evidence for geomagnetic asymmetry relying on such ground magnetic measurement data set. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84970991279&doi=10.1002%2f2016GL068345&partnerID=40&md5=9526e1ec769ff2ab5fff45f5bcd6e96a
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9990
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Electronic Engineering, Tsinghua University, Beijing, China
Recommended Citation:
Lu S.,Zhang H.,Li X.,et al. Empirical evidence for latitude dependence and asymmetry of geomagnetic spatial variation in mainland China[J]. Geophysical Research Letters,2016-01-01,43(9).