On the characteristics of successive geomagnetic jerks
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- Huy Minh Le
- Institut de Physique du Globe de Paris Hanoi Institute of Geophysics
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- Alexandrescu Mioara
- Institut de Physique du Globe de Paris
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- Hulot Gauthier
- Institut de Physique du Globe de Paris
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- Mouel Jean-Louis Le
- Institut de Physique du Globe de Paris
書誌事項
- タイトル別名
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- On the characteristics of successive ge
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Spherical harmonic models of the 1969, 1979 and 1992 geomagnetic jerks are computed using data from about 160 worldwide geomagnetic observatories. The dominance of the internal origin part with respect to the external one confirms again the internal origin of these events. A change of sign is observed between two successive jerks (1969-1979, 1979-1992). The acceleration jump of the fluid flow at the core mantle boundary (CMB) generating the three jerks is computed. Striking similarities between the three acceleration maps are observed (within the sign change mentioned above). These results suggest some long time scale memory in the processes that are responsible for the jerks. These processes remain to be elucidated.
収録刊行物
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- Earth, Planets and Space
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Earth, Planets and Space 50 (9), 723-732, 1998
地球電磁気・地球惑星圏学会 、公益社団法人 日本地震学会、特定非営利活動法人 日本火山学会、日本測地学会、日本惑星科学会
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詳細情報 詳細情報について
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- CRID
- 1390282681486985728
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- NII論文ID
- 10003735890
- 130003780735
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- NII書誌ID
- AA11211921
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- ISSN
- 18805981
- 13438832
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- NDL書誌ID
- 4590642
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可