IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
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
Source PublicationPROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume115Issue:36Pages:8913-8918
SubtypeArticle
AbstractPolarity 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.
KeywordMultidecadally Resolved Polarity Oscillations Geomagnetic Excursion Abrupt Reversal Transition Asymmetrical Interhemispheric Polarity Drifts Stalagmite U-th Dating
WOS HeadingsScience & Technology
DOI10.1073/pnas.1720404115
WOS KeywordINSTABILITY TIME-SCALE ; MAGNETIC-FIELD ; HIGH-PRECISION ; REVERSALS ; GEODYNAMO ; RECORD ; IDENTIFICATION ; SPELEOTHEM ; MICROSCOPY ; EVOLUTION
Indexed BySCI
Project Number106-2628-M-002-013 ; 105R7625 ; 107L901001 ; Y01316111
Language英语
WOS Research AreaScience & Technology - Other Topics
Funding OrganizationScience 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 SubjectMultidisciplinary Sciences
WOS IDWOS:000443555000046
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5309
Collection黄土与第四纪地质国家重点实验室(2010~)
Corresponding AuthorChou,Yu-Min
Affiliation1.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
Recommended Citation
GB/T 7714
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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