Non-Linear Response of the Magnetosphere

磁层的非线性响应

• 批准号: 9311522
• 负责人: Channon Price
• 金额: $ 6.21万
• 依托单位: University of Alaska Fairbanks Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-01-01 至 1997-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9311522&HistoricalAwards=false
• 关键词: Non; Linear; Response; Magnetosphere

9311522 Price There is non-linear response of the Earth's magnetospheric system to the solar wind. We propose to determine the degree of this non- linearity as a function of the level of activity and to use the 11 station magnetometer records to quantify more completely the nature of the solar wind driver and the nature of the magnetospheric response. The degree of non-linearity in the magnetospheric response to the solar wind is controlled by the level of magnetospheric activity. Our primary interest in predictability is for the identification of deterministic non-linear response; our interest in predictability qua prediction is secondary to that. To continue our previous non- linear analysis, we will analyse the response of the magnetosphere (as given by the 11 auroral oval magnetometer station records) to the solar wind input (given by the parameters v, n, B and calculated from 1 minute resolution ISEE-3 data). We should be able to identify the solar wind parameters which have the most effect on the magnetosphere and the prevailing pattern of response of the magnetosphere, as observed by the ground station magnetometers. Physically, it is likely that the present auroral electroject indices cannot reveal significant dynamical information about electroject dynamics. We will use the results of this non- linear prediction study to propose a new index based on the data from the 11 stations which more accurately represents the solar wind driven activity in the Earth's magnetosphere. we will generate the basis function whose projection leads to the least prediction error. ***

9311522价格地球磁层系统对太阳风的非线性响应。我们建议确定这种非线性程度作为活动水平的函数，并使用11个台站的磁力仪记录来更全面地量化太阳风驱动因素的性质和磁层响应的性质。磁层对太阳风响应的非线性程度受磁层活动程度的控制。我们对可预测性的主要兴趣是确定确定性的非线性反应；我们对作为预测的可预测性的兴趣是次要的。为了继续我们先前的非线性分析，我们将分析磁层(由11个极光椭圆形磁强计测站记录提供)对太阳风输入(由参数v、n、B给出，根据1分钟分辨率ISEE-3数据计算)的反应。我们应该能够确定对磁层影响最大的太阳风参数，以及地面站磁力计所观察到的磁层的主要响应模式。从物理上讲，目前的极光电喷射体指数很可能不能揭示有关电喷射体动力学的重要动力学信息。我们将利用这项非线性预测研究的结果，根据11个台站的数据提出一个新的指数，更准确地反映地球磁层中太阳风驱动的活动。我们将生成其投影导致最小预测误差的基函数。***