We quantify the contributions of different convection states to the magnetic flux throughput of the magnetosphere during 2010. To do this we provide a continuous classification of convection state for the duration of 2010 based upon observations of the solar wind and interplanetary magnetic field, geomagnetic indices, and field‐aligned currents measured by the Active Magnetosphere and Planetary Electrodynamics Response Experiment. Convection states are defined as (1) quiet, (2) weak activity, substorm (3) growth, (4) expansion and (5) recovery phases, (6) substorm driven phase (when relatively steady magnetospheric convection occurs), (7) recovery bays (when recovery phase is accompanied by a negative excursion of the AL electrojet index), and (8) periods of multiple intensifications (storm‐time periods when continuous short‐period AL activity occur). The magnetosphere is quiet for 46% of the time, when very little convection takes place. The majority of convection occurs during growth and driven phases (21% and 38%, respectively, of open magnetic flux accumulation by dayside reconnection). We discuss these results in the context of the expanding/contracting polar cap model of convection, and describe a framework within which isolated substorms and disturbances during periods of more continuous solar wind‐magnetosphere driving can be understood.

中文翻译：

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Dungey循环中的磁层通量：2010年对流状态的确定

我们量化了2010年期间不同对流状态对磁层磁通量的贡献。为此，我们根据对太阳风和行星际磁场，地磁指数的观测，提供了2010年期间对流状态的连续分类。由主动磁层和行星电动力学响应实验测得的磁场和磁场对准电流。对流状态定义为（1）安静，（2）活动弱，亚暴（3）增长，（4）扩张和（5）恢复阶段，（6）亚暴驱动阶段（发生相对稳定的磁层对流时），（7 ）回收舱（当回收阶段伴有AL电喷射指数的负偏移时），（8）多次强化的时期（发生连续短期AL活动的暴风雨时期）。当很少发生对流时，磁层在46％的时间内保持安静。大多数对流发生在生长和驱动阶段（通过日间重新连接分别占开放磁通积累的21％和38％）。我们在对流扩展/收缩极盖模型的背景下讨论这些结果，并描述了一个框架，在该框架内可以理解在更连续的太阳风-磁层驱动期间孤立的亚暴和干扰。日间重新连接产生的开放式磁通量积聚）。我们在对流扩展/收缩极盖模型的背景下讨论这些结果，并描述了一个框架，在该框架内可以理解在更连续的太阳风-磁层驱动期间孤立的亚暴和干扰。日间重新连接产生的开放式磁通量积聚）。我们在对流扩展/收缩极盖模型的背景下讨论这些结果，并描述了一个框架，在该框架内可以理解在更连续的太阳风-磁层驱动期间孤立的亚暴和干扰。