Geomagnetic excursions: a critical assessment of the evidence as recorded in sediments of the Brunhes Epoch
Geomagnetic excursions: a critical assessment of the evidence as recorded in sediments of the Brunhes Epoch
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地磁偏移：对布鲁赫斯时代沉积物中记录的证据的严格评估
DOI：
10.1098/rsta.1982.0076
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发表时间：
1982
期刊：
影响因子：
--
通讯作者：
K. Verosub
中科院分区：
文献类型：
--
作者：
K. Verosub
自从 15 年前首次提出地磁偏移的存在以来，地磁偏移就一直吸引着地球物理学家。无论是大规模的地磁长期变化、短期的地磁反转还是中止的反转，它们都有望为地磁场起源的本质提供新的见解。不幸的是，来自布伦赫斯时代沉积物的古地磁记录的地磁偏移证据并不像理论论证那样令人信服。对现有数据的严格评估表明，哥德堡游览不太可能发生，埃里奥游览也不太可能发生。莫诺湖游览可能发生过，但它在附近同期遗址的缺失造成了严重的问题。布莱克事件似乎是复杂特征的实际短暂逆转，但确认其全球性可能相当困难。
Geomagnetic excursions have tantalized geophysicists since the earliest suggestion of their occurrence over 15 years ago. Either as large-scale geomagnetic secular variation, geomagnetic reversals of short duration or aborted reversals, they held great promise of providing new insights into the nature of the origin of the geomagnetic field. Unfortunately the evidence for geomagnetic excursions from the palaeomagnetic record of Brunhes age sediments is not as compelling as the theoretical arguments. A critical assessment of the available data indicates that the Gothenburg excursion is unlikely to have occurred and the Erieau excursion is very unlikely. The Mono Lake excursion probably occurred, but its absence in nearby contemporaneous sites creates profound problems. The Blake Event appears to be an actual short reversal of complex character, but confirmation of its global nature may be quite difficult.