Theoretical Investigation of Magnetospheric Convection

磁层对流的理论研究

• 批准号: 9122310
• 负责人: Richard Wolf
• 金额: --
• 依托单位: William Marsh Rice University
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-09-01 至 1996-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9122310&HistoricalAwards=false
• 关键词: Theoretical; Investigation; Magnetospheric; Convection

This project centers on continued development of the Rice Convection Model (RCM) to study the Earth's magnetosphere and its coupling to the ionosphere and thermosphere. This three-year project concentration on eliminating the fundamental shortcoming of the present RCM, namely the inconsistency between the pressure distribution computed by the RCM from adiabatic-convection theory and the magnetic forces implied by the inputted magnetic-field model. A new algorithm will be developed for fast calculation of 3d magnetic fields that are approximately consistent with RCM- computed pressure distributions. The first convection-model calculation with approximately self-consistent B will asssume steady inputs, no near-Earth neutral line, and no other major non-adiabatic processes. The second self-consistent calculation will represent a classic, idealized magnetospheric substorm, including a growth phase, an expansion phase with disruption of the near-tail plasma sheet, and a recovery phase with reconstitution of the plasma sheet. Work will continue on other RCM investigations, including penetration of magnetospheric electric fields to low ionospheric latitudes, transport of ring- current/radiation-belt particles, and magnetic-field-aligned electric fields. Work applying the RCM to plasma transport in the Jovian magnetosphere will be pursued, though at a rate that depends on the prospects for appropriate data from the Galileo mission.

该项目的中心是继续发展水稻 研究地球磁层的对流模式（RCM）及其 耦合到电离层和热层。 这个为期三年 项目集中于消除根本缺陷 目前的RCM，即压力之间的不一致性 由RCM根据绝热对流理论计算的分布 以及由输入磁场所隐含的磁力 模型 将开发一种新的算法，用于快速计算 与RCM大致一致的3D磁场- 计算压力分布。 第一个对流模型 用近似自洽的B进行计算， 稳定的输入，没有近地中性线，也没有其他主要的 非绝热过程 第二个自洽计算 将代表一个经典的理想化的磁层亚暴， 包括生长阶段、具有破坏的扩张阶段、 近尾等离子体片，以及恢复阶段， 血浆片的重构。 将继续开展其他工作 RCM调查，包括磁层穿透 电场到低电离层纬度，传输环， 电流/辐射带粒子和磁场排列 电场 将RCM应用于血浆运输的工作 木星的磁层将继续研究， 这取决于伽利略号能否获得适当的数据 使命。