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Investigation of the SA evolution by using the CHAOS-4 model over 1997-2013

文献类型：期刊论文

作者Ou JiaMing1,2; Du AiMin1,2; Xu WenYao1,2
刊名SCIENCE CHINA-EARTH SCIENCES
出版日期2016-05-01
卷号59期号:5页码:1041-1050
关键词Geomagnetic secular acceleration Geomagnetic jerk Core-mantle boundary Zonal oscillation
DOI10.1007/s11430-016-5265-0
文献子类Article
英文摘要The temporal and spatial evolution characteristics of the geomagnetic secular acceleration (SA) are investigated, based on CHAOS-4 core field model during the period of 1997-2013. The SA evolution on a short time scale is associated with the phenomenon of the geomagnetic jerk. More details of the global extent and the occurrence time of the successive jerks (the 1999, 2003, 2007, and 2011 jerks) are obtained. The location, size and reversed polarity pattern for the 1999 jerk are similar to those for the 2003 jerk in the Asian-Indian sector. While the 2007 and 2011 jerks mainly take place in the Atlantic sector. The direction and speed of the shift for the four jerks are different, identified by the occurrence time of the jerks. The zonal motions of the SA patches exhibit an oscillation pattern in the Asian-Indian sector, whereas a purely westward drifting pattern is along the equator in the Atlantic sector. It is believed that the shift of the jerks is related to the motion of SA-B (r) patches observed at the core-mantle boundary (CMB).
WOS关键词GEOMAGNETIC SECULAR VARIATION ; EARTHS MAGNETIC-FIELD ; VARIATION IMPULSE ; CORE ; JERK ; SURFACE ; TOP ; MANTLE ; ORIGIN ; WAVES
WOS研究方向Geology
语种英语
WOS记录号WOS:000374966200015
资助机构National Basic Research Program of China(2014CB845903 ; National Basic Research Program of China(2014CB845903 ; National Basic Research Program of China(2014CB845903 ; National Basic Research Program of China(2014CB845903 ; National Natural Science Foundation of China(41174122 ; National Natural Science Foundation of China(41174122 ; National Natural Science Foundation of China(41174122 ; National Natural Science Foundation of China(41174122 ; 2012CB825604) ; 2012CB825604) ; 2012CB825604) ; 2012CB825604) ; 41031066 ; 41031066 ; 41031066 ; 41031066 ; 41104093 ; 41104093 ; 41104093 ; 41104093 ; 41574162 ; 41574162 ; 41574162 ; 41574162 ; 41204122) ; 41204122) ; 41204122) ; 41204122) ; National Basic Research Program of China(2014CB845903 ; National Basic Research Program of China(2014CB845903 ; National Basic Research Program of China(2014CB845903 ; National Basic Research Program of China(2014CB845903 ; National Natural Science Foundation of China(41174122 ; National Natural Science Foundation of China(41174122 ; National Natural Science Foundation of China(41174122 ; National Natural Science Foundation of China(41174122 ; 2012CB825604) ; 2012CB825604) ; 2012CB825604) ; 2012CB825604) ; 41031066 ; 41031066 ; 41031066 ; 41031066 ; 41104093 ; 41104093 ; 41104093 ; 41104093 ; 41574162 ; 41574162 ; 41574162 ; 41574162 ; 41204122) ; 41204122) ; 41204122) ; 41204122)
源URL[http://ir.iggcas.ac.cn/handle/132A11/53504]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
作者单位1.Chinese Acad Sci, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Ou JiaMing,Du AiMin,Xu WenYao. Investigation of the SA evolution by using the CHAOS-4 model over 1997-2013[J]. SCIENCE CHINA-EARTH SCIENCES,2016,59(5):1041-1050.
APA Ou JiaMing,Du AiMin,&Xu WenYao.(2016).Investigation of the SA evolution by using the CHAOS-4 model over 1997-2013.SCIENCE CHINA-EARTH SCIENCES,59(5),1041-1050.
MLA Ou JiaMing,et al."Investigation of the SA evolution by using the CHAOS-4 model over 1997-2013".SCIENCE CHINA-EARTH SCIENCES 59.5(2016):1041-1050.

入库方式： OAI收割

来源：地质与地球物理研究所

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