RUI: Paleointensity Before and After the Kauai R-N Transition

RUI：考艾岛 R-N 转变前后的古强度

• 批准号: 8904831
• 负责人: Scott Bogue
• 金额: $ 7万
• 依托单位: Occidental College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-09-01 至 1993-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8904831&HistoricalAwards=false
• 关键词: RUI; Paleointensity; Before; After; Kauai

"Epitransitional" geomagnetic fields (i.e, those which immediately precede or follow polarity reversals) probably reflect changes in normally stable core processes. They are therefore more likely to exhibit repeatable behavior than the fields resulting from the less stable, more disorderly processes predominant during the midpoints of reversals. Distinctive epitransitional field behavior is apparent in the Steens Mountain transition zone, which shows 1) field dispersion being high before the reversals and normal afterwards and 2) field intensity steady before the reversal and oscillating afterwards. Work supported by the Research Corporation shows that the dispersion of field directions follows exactly the same pattern before and after an R-N reversal recorded in basaltic flows on Kauai, Hawaii. The key question is whether the behavior of field intensity is also repeated. Construction of an apparatus for paleointensity experiments (funded by a RUI Research Instrumentation grant) has exhausted summer salary support from the Research Corporation grant. This award provides support for the paleointensity experiments and thus allow completion of the Kauai project. Undergraduate students will continue to be involved in every aspect of the study.

“外延”地磁场（即 紧接在极性反转之前或之后）可能 反映了正常稳定的核心过程的变化。 他们是 因此，更有可能表现出可重复的行为比 由于不太稳定，更无序的过程而产生的场 在反转的中点占主导地位。 鲜明 在Steens山，外延场行为是明显的 过渡区，表明1）场色散高 反转前和反转后正常; 2）场强 反转前稳定，反转后振荡。 工作 研究公司支持的研究表明， 磁场方向的变化完全遵循之前的模式， 在考艾岛玄武岩流中记录的R-N反转之后， 夏威夷。 关键问题是场的行为 强度也在重复。 一种装置的构造， 古强度实验（由RUI研究资助 仪器补助金）已耗尽夏季工资支持， 研究公司的资助 该奖项支持 古强度实验，从而使完成的 考艾岛项目。 本科生将继续在 参与了研究的各个方面。