地球与行星物理论评（中英文）2024，Vol.55Issue(5)：609-618,10.DOI:10.19975/j.dqyxx.2024-007
太阳风流相互作用区边界压力波中的静电波
Electrostatic waves in pressure waves bounding solar wind stream interaction regions
摘要
Abstract
The solar wind stream interaction region is bounded by a pair of forward-reverse pressure waves that commonly steepen into forward and reverse shock waves at large heliocentric distances.It remains unclear whether electrostatic(ES)wave modes are present in pressure wave ramps and provide energy dissipation as they do in shock waves.In this study,we identified 76 pressure waves bounding SIRs near 1 AU utilizing Wind meas-urements from 1995-2020 and determined that 27 pressure waves(18 forward and nine reverse)had at least one waveform capture in the pressure ramp.The ES wave modes included three main wave types:ion acoustic waves(IAWs),Langmuir waves,and ES solitary waves(ESWs).The dominant mode in the forward pressure wave ramp was the IAW,whereas those in the reverse pressure wave ramp were the Langmuir wave and ESW.The IAWs provided an approximately anomalous resistivity of 0.01-2 Ω·m.A positive correlation existed between the maxi-mum of the IAW amplitude and the strength of the pressure wave.These results indicate that IAWs can potentially provide energy dissipation for forward pressure waves.关键词
压力波/离子声波/能量耗散Key words
pressure wave/ion acoustic wave/energy dissipation分类
地球科学引用本文复制引用
王相函,郭建鹏..太阳风流相互作用区边界压力波中的静电波[J].地球与行星物理论评（中英文）,2024,55(5):609-618,10.基金项目
This research was supported by the National Natural Science Foundation of China(Grant Nos.42074212,42374214)and the Key Research Program of the Institute of Geology and Geophysics,CAS(Grant No.IGGCAS-201904) （Grant Nos.42074212,42374214）
