Mesoscale Structures

这项提议的目的是为了更好地理解地球磁尾中电流片的物理特性。pi将澄清带电粒子作为电流载体的作用，这些带电粒子不服从导向中心近似。这项研究将集中于中尺度结构的详细建模，而不是试图生成整个尾巴的不太精确的模型。还将开发一系列磁场模型和相应的电流片模型。最后，一个特定的磁场模型将测试这样的建议，即尾部离子轨道类型的变化可能对极光场对齐或伯克兰电流的产生很重要。＊＊＊

The objective of this proposal is to better understand the physics of the current sheet in the Earth's magnetotail. The PIs will clarify the role, as current carriers, of charged particles that do not obey the guiding center approximations. The study will concentrate on the detailed modeling of mesoscale structures rather than on an attempt to generate less exact models of the entire tail. A series of magnetic field models and corresponding model current sheets will also be developed. Finally, a specific magnetic field model will test the suggestion that variations in ion orbit types in the tail can be important to the generation of auroral field-aligned or Birkeland currents. ***