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首页> 外文会议>Cluster and double star symposium >CROSS-SCALE: A MULTI-SPACECRAFT MISSION TO STUDY CROSS-SCALECOUPLING IN SPACE PLASMAS
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CROSS-SCALE: A MULTI-SPACECRAFT MISSION TO STUDY CROSS-SCALECOUPLING IN SPACE PLASMAS

机译：跨尺度：研究空间等离子体中跨尺度耦合的多空间任务

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Collisionless astrophysical plasmas exhibit complexityrnon many scales: if we are to understand their propertiesrnand effects, we must measure this complexity. We canrnidentify a small number of processes and phenomena,rnone of which is dominant in almost every space plasmarnregion of interest: shocks, reconnection and turbulence.rnThese processes act to transfer energy betweenrnlocations, scales and modes. However, this transfer isrncharacterised by variability and 3D structure on at leastrnthree scales: electron kinetic, ion kinetic and fluid. It isrnthe nonlinear interaction between physical processes atrnthese scales that is the key to understanding thesernphenomena and predicting their effects. However,rncurrent and planned multi-spacecraft missions such asrnCluster and MMS only study variations on one scale inrn3D at any given time - we must measure the three scalesrnsimultaneously fully to understand the energy transferrnprocesses. We propose a mission, called Cross-Scale, tornstudy these processes. Cross-Scale would comprisernthree nested groups, each consisting of up to fourrnspacecraft. Each group would have a differentrnspacecraft separation, at approximately the electron andrnion gyroradii, and a larger MHD scale. We wouldrntherefore be able to measure variations on all threernimportant physical scales, simultaneously, for the firstrntime. The spacecraft would fly in formation through keyrnregions of near-Earth space: the solar wind, bowshock,rnmagnetosheath, magnetopause and magnetotail.
机译：无碰撞天体等离子体的复杂性在很多方面都没有：如果我们要了解它们的特性和作用，就必须测量这种复杂性。我们可以识别出少数过程和现象，而这些过程和现象在几乎每个感兴趣的空间等离子区域中都占主导：冲击，重新连接和湍流。这些过程的作用是在位置，尺度和模式之间传递能量。然而，这种转移的特征在于至少在三个尺度上的可变性和3D结构：电子动力学，离子动力学和流体。这些尺度上的物理过程之间的非线性相互作用是理解神经现象和预测其作用的关键。但是，当前和计划中的多航天器任务（例如Cluster和MMS）仅在任何给定时间研究3D尺度上的变化-我们必须同时全面测量这三个尺度，以了解能量传递过程。我们提出了一项跨领域任务，以研究这些过程。跨尺度将包括三个嵌套的组，每个组最多由四个航天器组成。每一组将具有不同的航天器间隔，近似于电子和负电子陀螺半径，并且具有更大的MHD尺度。因此，我们将能够首次同时测量所有三个重要物理尺度上的变化。航天器将通过近地空间的关键区域编队飞行：太阳风，弓形震荡，磁石荒野，磁悬浮和磁尾。

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