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Authors: Wei Chao, Dai Lei, Duan Suping, Wang Chi, Wang YuXian, et al.
Title: Multiple satellites observation evidence: High-m Poloidal ULF waves with time-varying polarization states
Abstract: We report multi‐spacecraft observations of ULF waves from Van Allen Probes (RBSP), Magnetospheric Multiscale (MMS), Time History of Events and Macroscale Interactions during Substorm (THEMIS), and Geostationary Operational Environmental Satellites (GOES). On August 31, 2015, global‐scale poloidal waves were observed in data from RBSP‐B, GOES and THEMIS from L=4 to L=8 over a wide range of magnetic local time (MLT). The polarization states varied towards purely poloidal polarity. In two consecutive orbits over 18 hours, RBSP‐A and RBSP‐B recorded gradual variation of the polarization states of the poloidal waves; the ratio (|Ba|/|Br|) decreased from 0.82 to 0.13. After the variation of polarization states, the poloidal ULF waves became very purely poloidal waves, localized in both. . .
Date: 05/2019 Publisher: Earth and Planetary Physics Pages: 190 - 203 DOI: 10.26464/epp2019021 Available at: https://agupubs.onlinelibrary.wiley.com/doi/10.26464/epp2019021
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