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根据西太平洋暖池WP92-5,WP92-3柱样沉积物的磁性地层学研究结果,发现WP92-5柱样沉积物的磁性记录了3个地球磁场漂移(地球磁场极性反转),即Gothenburg,MonoLake(或Rubjerg)和Mungo(或Maelifell),其界限年龄分别为12.5kaB.P.,24.0(23)kaB.P.和31.0(28—31)kaB.P.;WP92-3柱样沉积物的磁性也记录了前两个地球磁场漂移。这一结果表明,西太平洋暖池区对35kaB.P.以来地球磁场极性发生的3次短暂的漂移有明显的响应。由于两柱样都采集于赤道附近南半球暖池区,其磁倾角的变化有一定的特殊性。
According to the magnetic stratigraphic study of the WP92-5 and WP92-3 column-like sediments in the western Pacific warm pool, it is found that the magnetism of the WP92-5 column-like sediment records 3 earth magnetic field drifts (the polarity reversal of the earth’s magnetic field), ie, Gothenburg, Mono Lake (or Rubjerg), and Mungo (or Maelifell) with a limit age of 12.5kaB.P., 24.0 (23) kaB.P. and 31.0 (28-31) kaB.P .; WP92-3 column The magnetism of the sediments also records the first two Earth’s magnetic field drifts. This result shows that the western Pacific warm pool area has a clear response to three short-lived drifts in the Earth’s magnetic field polarity since 35 kaB.P. As the two columns are collected in the southern hemisphere near the equator in the warm pool area, the change in the inclination of a certain degree of particularity.