Do non-dipole geomagnetic field behaviors persistently exist in the subarctic Pacific Ocean over the past 140 ka?  

140千年以来亚北极太平洋地区一直存在地磁场非偶极子行为吗?

作　　者：Yi Zhong Yanguang Liu Xiaoqiang Yang Jian Zhang Jiabo Liu Aleksandr Bosin Sergey A.Gorbarenko Xuefa Shi Ting Chen Yu-Min Chou Wei Liu Haosen Wang Congcong Gai Jianxing Liu Alexander NDerkachev Xiaoke Qiang Qingsong Liu 仲义;刘焱光;杨小强;张健;柳加波;Aleksandr Bosin;Sergey A.Gorbarenko;石学法;陈艇;周祐民;刘伟;王浩森;盖聪聪;刘建兴;Aleksandr N.Derkachev;强小科;刘青松(Centre for Marine Magnetism,Department of Ocean Science and Engineering,Southern University of Science and Technology,Shenzhen 518055,China;Key Laboratory of Marine Sedimentology and Metallogeny,First Institute of Oceanography,Ministry of Natural Resourses,Qingdao 266061,China;Laboratory for Marine Geology,Pilot National Laboratory for Marine Science and Technology(Qingdao),Qingdao 266061,China;Department of Earth Science,Sun Yat-sen University,Guangzhou 510275,China;Key Laboratory of Computational Geodynamics,University of Chinese Academy of Sciences,Beijing 100049,China;V.I.Il'ichev Pacific Oceanological Institute,Far East Branch of Russian Academy of Science,Vladivostok 690041,Russia;State Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;Research School of Earth Sciences,Australian National University,Canberra ACT 2601,Australia;State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment,Chinese Academy of Sciences,Xi'an 710061,China)

机构地区：[1]Centre for Marine Magnetism,Department of Ocean Science and Engineering,Southern University of Science and Technology,Shenzhen 518055,China [2]Key Laboratory of Marine Sedimentology and Metallogeny,First Institute of Oceanography,Ministry of Natural Resourses,Qingdao 266061,China [3]Laboratory for Marine Geology,Pilot National Laboratory for Marine Science and Technology(Qingdao),Qingdao 266061,China [4]Department of Earth Science,Sun Yat-sen University,Guangzhou 510275,China [5]Key Laboratory of Computational Geodynamics,University of Chinese Academy of Sciences,Beijing 100049,China [6]V.I.Il'ichev Pacific Oceanological Institute,Far East Branch of Russian Academy of Science,Vladivostok 690041,Russia [7]State Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China [8]Research School of Earth Sciences,Australian National University,Canberra ACT 2601,Australia [9]State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment,Chinese Academy of Sciences,Xi'an 710061,China

出　　处：《Science Bulletin》2020年第18期1505-1507,M0003,共4页科学通报（英文版）

基　　金：the National Natural Science Foundation of China(41874078,41806063,and U1606401);the National Key Research&Development Program of China(2016YFA061903);National Program on Global Change and AirSea Interaction(GASI-GEOGE-03);the Open Fund of the Key Laboratory of Marine Geology and Environment,Chinese Academy of Sciences(MGE2018KG05);Laboratory for Marine Geology,Pilot National Laboratory for Marine Science and Technology(Qingdao)(MGQNLM201818),SIGEPAX(03F0704A);State Key Laboratory of Marine Geology,Tongji University(MGK1826);Shenzhen Science and Technology Program(KQTD20170810111725321)。

摘　　要：Paleomagnetic records from globally distributed locations are essential for fully understanding geomagnetic field variations,particularly non-dipole field fluctuations[1].Paleomagnetic studies on historical time scales have demonstrated the existence of persistent geomagnetic flux patches,such as the Canadian(North America)and Siberian(East Asia)flux lobes,which may result from an organizing structure imposed on the geomagnetic field by lower mantle heterogeneity[2].Holocene paleomagnetic secular variations,reconstructed from the Alaskan margin of the Subarctic Pacific Ocean(SPO)[3]and revealed by dynamo modeling[4],further suggest that time-varying flux expulsions on the core-mantle boundary recurrently occur in high-latitude locations(Fig.la).

关 键 词：GEOMAGNETIC MANTLE HOLOCENE 

分 类 号：P318[天文地球—固体地球物理学]