| 单词 | palaeosecular variation |
| 释义 | > as lemmaspalaeosecular variation Of or relating to slow and long-lasting changes in the orientation of the Earth's magnetic field in the geological past. Chiefly in palaeosecular variation. ΚΠ 1962 Jrnl. Geophysical Res. 67 3461 Methods are discussed for deducing the amount of dispersion produced by the paleosecular variation in the magnetization of a rock formation against the background of noise due to experimental errors, partial remagnetization, subsequent tectonic movement, etc. 1979 Eos 60 818 (heading) Late Pleistocene paleosecular variation in marine sediments from the Gardar Drift, NE Atlantic Ocean. 1996 Science 9 Aug. 776 All the statistical field models produced thus far by the paleomagnetic community are restricted to the description of paleosecular variation, which implies that the paleosecular regime is physically distinct from the reversing regime. < as lemmas |
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