Multidecadally resolved polarity oscillations during a geomagnetic excursion
Chou, Yu-Min1,2; Jiang, Xiuyang3; Liu, Qingsong2,4; Hu, Hsun-Ming1; Wu, Chung-Che1; Liu, Jianxing4,5; Jiang, Zhaoxia6; Lee, Teh-Quei7; Wang, Chun-Chieh8; Song, Yen-Fang8; Chiang, Cheng-Cheng8; Tan, Liangcheng9,10; Lone, Mahjoor A.1; Pan, Yongxin11; Zhu, Rixiang11; He, Yaoqi12; Chou, Yu-Chen1; Tan, An-Hung13; Roberts, Andrew P.14; Zhao, Xiang14; Shen, Chuan-Chou1,15; Chou,Yu-Min
2018-09-04
发表期刊PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷号115期号:36页码:8913-8918
文章类型Article
摘要Polarity reversals of the geomagnetic field have occurred through billions of years of Earth history and were first revealed in the early 20th century. Almost a century later, details of transitional field behavior during geomagnetic reversals and excursions remain poorly known. Here, we present a multidecadally resolved geomagnetic excursion record from a radioisotopically dated Chinese stalagmite at 107-91 thousand years before present with age precision of several decades. The duration of geomagnetic directional oscillations ranged from several centuries at 106-103 thousand years before present to millennia at 98-92 thousand years before present, with one abrupt reversal transition occurring in one to two centuries when the field was weakest. These features indicate prolonged geodynamo instability. Repeated asymmetrical interhemispheric polarity drifts associated with weak dipole fields likely originated in Earth's deep interior. If such rapid polarity changes occurred in future, they could severely affect satellites and human society.
关键词Multidecadally Resolved Polarity Oscillations Geomagnetic Excursion Abrupt Reversal Transition Asymmetrical Interhemispheric Polarity Drifts Stalagmite U-th Dating
WOS标题词Science & Technology
DOI10.1073/pnas.1720404115
关键词[WOS]INSTABILITY TIME-SCALE ; MAGNETIC-FIELD ; HIGH-PRECISION ; REVERSALS ; GEODYNAMO ; RECORD ; IDENTIFICATION ; SPELEOTHEM ; MICROSCOPY ; EVOLUTION
收录类别SCI
所属项目编号106-2628-M-002-013 ; 105R7625 ; 107L901001 ; Y01316111
语种英语
WOS研究方向Science & Technology - Other Topics
项目资助者Science Vanguard Research Program of the Ministry ofScience and Technology (MOST) Grant ; Science Vanguard Research Program of the Ministry ofScience and Technology (MOST) Grant ; National Taiwan University Grant ; National Taiwan University Grant ; Higher Education Sprout Project of the Ministry of Education, Taiwan, Republic of ChinaGrant ; Higher Education Sprout Project of the Ministry of Education, Taiwan, Republic of ChinaGrant ; SouthernUniversity of Science and Technology Grant ; SouthernUniversity of Science and Technology Grant
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000443555000046
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5309
专题黄土与第四纪地质国家重点实验室(2010~)
通讯作者Chou,Yu-Min
作者单位1.Natl Taiwan Univ, High Precis Mass Spectrometry & Environm Change L, Dept Geosci, Taipei 10617, Taiwan
2.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen 518055, Peoples R China
3.Fujian Normal Univ, Coll Geog Sci, Minist Educ, Key Lab Humid Subtrop Ecogeog Proc, Fuzhou 350117, Fujian, Peoples R China
4.Qingdao Natl Oceanog Lab Sci & Technol, Lab Marine Geol, Qingdao 266237, Peoples R China
5.State Ocean Adm, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Peoples R China
6.Ocean Univ China, Coll Marine Geosci, Qingdao 266100, Peoples R China
7.Acad Sinica, Inst Earth Sci, Taipei 11529, Taiwan
8.Natl Synchrotron Radiat Res Ctr, Hsinchu 30076, Taiwan
9.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China
10.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Shaanxi, Peoples R China
11.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
12.Guizhou Minzu Univ, Coll Tourism & Air Serv, Guiyang 550025, Guizhou, Peoples R China
13.Chien Hsin Univ Sci & Technol, Dept Mech Engn, Taoyuan 32097, Taiwan
14.Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 2601, Australia
15.Natl Taiwan Univ, Res Ctr Future Earth, Taipei 10617, Taiwan
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Chou, Yu-Min,Jiang, Xiuyang,Liu, Qingsong,et al. Multidecadally resolved polarity oscillations during a geomagnetic excursion[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2018,115(36):8913-8918.
APA Chou, Yu-Min.,Jiang, Xiuyang.,Liu, Qingsong.,Hu, Hsun-Ming.,Wu, Chung-Che.,...&Chou,Yu-Min.(2018).Multidecadally resolved polarity oscillations during a geomagnetic excursion.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,115(36),8913-8918.
MLA Chou, Yu-Min,et al."Multidecadally resolved polarity oscillations during a geomagnetic excursion".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 115.36(2018):8913-8918.
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