Su Z., H. Zhu, F. Xiao, H. Zheng, Y. Wang, C. Shen, M. Zhang, S. Wang, C. A. Kletzing, W. S. Kurth, G. B. Hospodarsky, H. E. Spence, G. D. Reeves, H. O. Funsten, J. B. Blake, D. N. Baker, J. R. Wygant, (2015), Disappearance of plasmaspheric hiss following interplanetary shock, Geophysical Research Letters, 42, 3129-3140, doi:10.1002/2015GL063906

Abstract

AbstractPlasmaspheric hiss is one of the important plasma waves controlling radiation belt dynamics. Its spatiotemporal distribution and generation mechanism are presently the object of active research. We here give the first report on the shock-induced disappearance of plasmaspheric hiss observed by the Van Allen Probes on 8 October 2013. This special event exhibits the dramatic variability of plasmaspheric hiss and provides a good opportunity to test its generation mechanisms. The origination of plasmaspheric hiss from plasmatrough chorus is suggested to be an appropriate prerequisite to explain this event. The shock increased the suprathermal electron fluxes, and then the enhanced Landau damping promptly prevented chorus waves from entering the plasmasphere. Subsequently, the shrinking magnetopause removed the source electrons for chorus, contributing significantly to the several-hours-long disappearance of plasmaspheric hiss.

Authors (sorted by name)

Baker Blake Funsten Kurth Reeves Shen Spence Su Wygant Xiao Zhang Zheng Zhu

Journal / Conference

Geophysical Research Letters

Acknowledgments

The interplanetary parameters and geomagnetic indices are obtained at the CDAWeb (http://cdaweb.gsfc.nasa.gov/cdaweb/istp_public/). The RBSP data are available at the websites (http://emfisis.physics.uiowa.edu/Flight/forEMFISIS, http://www.rbsp-ect.lanl.gov/data_pub/ for ECT, and http://www.space.umn.edu/rbspefw-data/ for EFW). We acknowledge K. Ronnmark for the using of WHAMP code. This work was supported by the National Natural Science Foundation of China grants 41274169, 41274174, 41422405, 41174125, 41131065, 41121003, 41074120, 41231066, and 41304134; the Chinese Academy of Sciences grant KZCX2‐EW‐QN510 and KZZD‐EW‐01‐4; and the National Key Basic Research Special Foundation of China grant 2011CB811403. This work was also supported from JHU/APL contracts 921647, 967399, and 922613 under NASA Prime contract NAS5‐01072.

Bibtex

@article{doi:10.1002/2015GL063906,
author = {Su, Zhenpeng and Zhu, Hui and Xiao, Fuliang and Zheng, Huinan and Wang, Yuming and Shen, Chao and Zhang, Min and Wang, Shui and Kletzing, C. A. and Kurth, W. S. and Hospodarsky, G. B. and Spence, H. E. and Reeves, G. D. and Funsten, H. O. and Blake, J. B. and Baker, D. N. and Wygant, J. R.},
title = {Disappearance of plasmaspheric hiss following interplanetary shock},
year={2015},
journal = {Geophysical Research Letters},
volume = {42},
number = {9},
pages = {3129-3140},
keywords = {plasmaspheric hiss, interplanetary shock, Landau damping, cyclotron resonance, cyclotron instability, radiation belt},
doi = {10.1002/2015GL063906},
url = {https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1002/2015GL063906},
eprint = {https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/2015GL063906},
abstract = {AbstractPlasmaspheric hiss is one of the important plasma waves controlling radiation belt dynamics. Its spatiotemporal distribution and generation mechanism are presently the object of active research. We here give the first report on the shock-induced disappearance of plasmaspheric hiss observed by the Van Allen Probes on 8 October 2013. This special event exhibits the dramatic variability of plasmaspheric hiss and provides a good opportunity to test its generation mechanisms. The origination of plasmaspheric hiss from plasmatrough chorus is suggested to be an appropriate prerequisite to explain this event. The shock increased the suprathermal electron fluxes, and then the enhanced Landau damping promptly prevented chorus waves from entering the plasmasphere. Subsequently, the shrinking magnetopause removed the source electrons for chorus, contributing significantly to the several-hours-long disappearance of plasmaspheric hiss.}
}