Paleomagnetism, Geomagnetic Reversals and Dynamo Theory

古地磁学、地磁反转和发电机理论

• 批准号: 8902208
• 负责人: Ronald Merrill
• 金额: $ 10.94万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-12-01 至 1992-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8902208&HistoricalAwards=false
• 关键词: Paleomagnetism; Geomagnetic; Reversals; Dynamo; Theory

The major goal of this work is to obtain estimates of the dipole and quadrupole families of dynamo theory from the present back into the Mesozoic. This will be done by using paleomagnetic data from lava flows that provide estimates of the paleosecular variation with latitude. The results should be robust for several reasons, including that one can distinguish the relative strengths of the two families with time without having accurate continental reconstructions and because unreasonable a-priori assumptions relating the paleomagnetic data to the geomagnetic field are not required. The data and analyses yield valuable tests of models for reversals of the Earth's magnetic field that involve interactions between the dipole and quadrupole families.

这项工作的主要目标是获得估计的 从目前的发电机理论的偶极和四极家庭 回到中生代 这将通过使用古地磁 熔岩流的数据提供了古世俗的估计 随纬度变化。 结果应稳健， 几个原因，包括一个可以区分相对 两个家庭的实力与时间没有准确的 因为不合理的先验 将古地磁数据与地磁数据联系起来的假设 字段不是必需的。 这些数据和分析产生了有价值的 地球磁场逆转模型的测试， 涉及偶极和四极族之间的相互作用。