Bingham Statistical Distributions in Paleomagnetism: In Search of a Technique to Determine Paleolongitudes

古地磁学中的宾厄姆统计分布：寻找确定古经度的技术

• 批准号: 9705755
• 负责人: Rob Van der Voo
• 金额: $ 6.91万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-09-01 至 2000-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9705755&HistoricalAwards=false
• 关键词: Bingham; Statistical; Distributions; Paleomagnetism; Search

97-05755 Van der Voo Bingham statistical analysis can be applied to paleomagnetic data to test whether the azimuths of the long axes of the Bingham ellipses lie tangent to an apparent polar wander path (APWP). The long axes are expected to be parallel to the APWP trends if the paleomagnetic directions sampled sufficient time to reflect apparent polar wander. The method has been tested with the North American APWP, validating the methods and the hypothesis. The plotting of a pole with its azimuthal cord provides additional definition to an APWP. More importantly for this proposed study is that these tangents to the APWP can be used in intercontinental comparisons that may yield relative paleolongitude information. This proposed study intends to evaluate this idea with three test cases, some of which remain rather controversial: (1) a comparison of proposed Pangea configurations (A, B and C), (2) a comparison of paleolongitudinal positions of North and South America during the middle Paleozoic evolution of the Iapetus Ocean, and (3) Proterozoic configurations of the Rodinia Supercontinent. ***

97-05755范德沃·宾汉统计分析可以应用于古地磁资料，以检验宾汉椭圆长轴的方位是否与视极移路径相切。如果古地磁方向采样了足够的时间来反映明显的极移，那么长轴预计将与APWP趋势平行。该方法已经用北美APWP进行了检验，验证了方法和假设的正确性。标绘带有方位线的极点为APWP提供了额外的定义。对于这项拟议的研究来说，更重要的是，这些与APWP的切线可以用于洲际比较，从而可能产生相对的古经度信息。这项拟议的研究打算用三个测试案例来评估这一想法，其中一些仍然存在相当大的争议：(1)拟议的盘古配置(A、B和C)的比较，(2)Iaptus洋中古生代演化期间北美和南美洲古纵向位置的比较，以及(3)Rodinia超大陆的元古界配置。***