Empirical model of proton fluxes in the equatorial inner magnetosphere: Development
Empirical model of proton fluxes in the equatorial inner magnetosphere: Development
复制标题
赤道内磁层质子通量的经验模型：发展
DOI：
10.1029/2000ja900158
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
I. Daglis
中科院分区：
文献类型：
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作者：
A. Milillo;S. Orsini;I. Daglis
我们根据电荷-能量-质量仪器在活动磁层粒子示踪探测器任务3年(1985-1987，接近太阳极小值)中在能量范围1-300keV和L范围3-9范围内所作的质子测量，提出了一个内部磁层的经验模型。我们对低地磁活动(Ae<；100nT)的平均质子通量进行了拟合，得到了一个多参数函数，它是五个不同部分之和，与能量、L壳、地磁时和一些独立因素有关。该模型能够准确地再现赤道内磁层的平均垂直质子通量。模型函数的不同部分再现了物理过程对磁层等离子体的影响，例如扩散。我们描述了模型开发所遵循的方法论。像这样的经验模型在我们努力利用正在进行和未来任务的全球中性原子成像测量方面至关重要。此外，它们还作为内部磁层的理论模型和数值模拟的基准。
We present an empirical model of the inner magnetosphere, based on proton measurements performed by the charge‐energy‐mass instrument in the energy range 1–300 keV and in the L range 3–9 during 3 years of the Active Magnetospheric Particle Tracer Explorers/CCE mission (1985 to 1987, i.e., near solar minimum). We have fitted the average proton fluxes at low geomagnetic activity (AE < 100 nT) and obtained a multi parametric function, which is the sum of five different parts and depends on energy, L shell, magnetic local time, and a few independent factors. The model is able to accurately reproduce the average perpendicular proton fluxes in the equatorial inner magnetosphere. The various segments of the model function reproduce the effects of physical processes, such as diffusion, on magnetospheric plasma. We describe the methodology followed for the development of the model. Empirical models like this one are critical in our effort to exploit global neutral atom imaging measurements of ongoing and future missions. Furthermore, they serve as a benchmark of theoretical models and numerical simulations of the inner magnetosphere.