Multidecadally resolved polarity oscillations during a geomagnetic excursion
文献类型：期刊论文
| 作者 | Zhao, Xiang13; Shen, Chuan-Chou12,15; Chou,Yu-Min; Jiang, Zhaoxia10; Liu, Jianxing1,3; Wu, Chung-Che15; Hu, Hsun-Ming15; Liu, Qingsong2,3; Jiang, Xiuyang4; Chou, Yu-Min2,15 |
| 刊名 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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| 出版日期 | 2018-09-04 |
| 卷号 | 115期号:36页码:8913-8918 |
| 关键词 | Multidecadally Resolved Polarity Oscillations Geomagnetic Excursion Abrupt Reversal Transition Asymmetrical Interhemispheric Polarity Drifts Stalagmite U-th Dating |
| DOI | 10.1073/pnas.1720404115 |
| 文献子类 | Article |
| 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. |
| WOS关键词 | INSTABILITY TIME-SCALE ; MAGNETIC-FIELD ; HIGH-PRECISION ; REVERSALS ; GEODYNAMO ; RECORD ; IDENTIFICATION ; SPELEOTHEM ; MICROSCOPY ; EVOLUTION |
| WOS研究方向 | Science & Technology - Other Topics |
| 项目编号 | 106-2628-M-002-013 ; 105R7625 ; 107L901001 ; Y01316111 |
| 语种 | 英语 |
| WOS记录号 | WOS:000443555000046 |
| 资助机构 | 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 |
| 源URL | [http://ir.ieecas.cn/handle/361006/5309]  |
| 专题 | 地球环境研究所_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.State Ocean Adm, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Peoples R China 2.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen 518055, Peoples R China 3.Qingdao Natl Oceanog Lab Sci & Technol, Lab Marine Geol, Qingdao 266237, Peoples R China 4.Fujian Normal Univ, Coll Geog Sci, Minist Educ, Key Lab Humid Subtrop Ecogeog Proc, Fuzhou 350117, Fujian, Peoples R China 5.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China 6.Natl Synchrotron Radiat Res Ctr, Hsinchu 30076, Taiwan 7.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Shaanxi, Peoples R China 8.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 9.Guizhou Minzu Univ, Coll Tourism & Air Serv, Guiyang 550025, Guizhou, Peoples R China 10.Ocean Univ China, Coll Marine Geosci, Qingdao 266100, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Xiang,Shen, Chuan-Chou,Chou,Yu-Min,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 | Zhao, Xiang.,Shen, Chuan-Chou.,Chou,Yu-Min.,Jiang, Zhaoxia.,Liu, Jianxing.,...&Roberts, Andrew P..(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 | Zhao, Xiang,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. |
入库方式： OAI收割
来源：地球环境研究所
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