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

始新世太平洋板块的高分辨率表观极地漂移

• 批准号: 9205875
• 负责人: Katerina Petronotis
• 金额: $ 6.27万
• 依托单位: University of New Mexico
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-08-01 至 1995-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9205875&HistoricalAwards=false
• 关键词: Resolution; Apparent; Polar; Wander; Pacific

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.

该奖项将填补太平洋视极地的一个关键空白 浏览记录Vine的轮廓的偏斜度分析- 马修斯磁场异常。 PI将联合收割机与偏度 数据使用一种新的方法，已开发的同时解决 古地磁的纬度，经度和它们的95% 置信限和异常偏度及其95%置信度 最大似然、最小似然和最大似然的最佳拟合数据的限值 常识 她将分析太平洋异常的偏度 12r-24r（32-57 Ma）。 这些数据将填补 手肘前关键时段的古地磁数据 在夏威夷-皇帝链上， 在21-25年期间进行重组。 她会用这些结果 进一步限制了南移的时间和速度， 夏威夷热点相对于古地磁轴，构建 异常偏度的详细年表，以测试替代 板块重建，并调查地心轴向 偶极假说