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DOI | 10.1073/pnas.1720404115 |
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 | |
2018-09-04 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2018 |
卷号 | 115期号:36页码:8913-8918 |
文章类型 | Article |
语种 | 英语 |
国家 | Taiwan; Peoples R China; Australia |
英文摘要 | 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. |
英文关键词 | multidecadally resolved polarity oscillations geomagnetic excursion abrupt reversal transition asymmetrical interhemispheric polarity drifts stalagmite U-Th dating |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000443555000046 |
WOS关键词 | MAGNETIC-FIELD ; HIGH-PRECISION ; RECORD ; IDENTIFICATION ; REVERSALS ; GEODYNAMO ; TH-230 ; MODEL ; BLAKE ; ROCK |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204981 |
专题 | 地球科学 资源环境科学 气候变化 |
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 |
推荐引用方式 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.,...&Shen, Chuan-Chou.(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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