High Resolution Apparent Polar Wander of the Pacific Plate During the Eocene

该奖项将通过分析Vine- Matthews磁异常记录剖面的偏度来填补太平洋视极漂移的关键空白。PI将使用一种新方法将偏度数据结合在一起，该方法已开发用于同时解决古地磁苍白纬度，经度及其95%置信限，以及异常偏度及其95%置信限，这些数据在最大似然，最小二乘意义上最适合数据。她将分析太平洋异常12r-24r （32-57 Ma）的偏度。这些资料将填补在夏威夷-皇帝链肘部之前和跨越21-25年代主要板块重组的关键时期的古地磁资料的巨大空白。她将利用这些结果进一步限制夏威夷热点相对于古地磁轴向南运动的时间和速率，构建异常偏度的详细年表，测试替代板块重建，并研究地磁轴偶极子假说。

This award will fill a critical gap in Pacific apparent polar wander through analysis of the skewness of profiles recording Vine- Matthews magnetic anomalies. The PI will combine together skewness data using a new method that has developed to solve simultaneously for the paleomagnetic pale latitude, longitude and their 95% confidence limits, and anomalous skewness and its 95% confidence limits that best fit the data in a maximum-likelihood, least- squares sense. She will analyze the skewness of Pacific anomalies 12r-24r (32-57 Ma). These data will fill a large gap in paleomagnetic data for the critical interval preceding the elbow in the Hawaiian-Emperor chain and spanning the major plate reorganization during chrons 21-25. She will use the results to further constrain the timing and rate of southward motion of the Hawaiian hotspot relative to the paleomagnetic axis, to construct a detailed chronology of anomalous skewness, to test alternative plate reconstructions, and to investigate the geocentric axial dipole hypothesis.