Survey of magnetospheric line radiation events observed by the DEMETER spacecraft

0330765 - ÚFA 2013 RIV US eng J - Článek v odborném periodiku
Němec, František - Parrot, M. - Santolík, Ondřej - Rodger, C. J. - Rycroft, M. J. - Hayosh, Mykhaylo - Shklyar, D. - Demekhov, A.
Survey of magnetospheric line radiation events observed by the DEMETER spacecraft.
Journal of Geophysical Research. Roč. 114, May 7 (2009), A05203/1-A05203/11. ISSN 0148-0227
Výzkumný záměr: CEZ:AV0Z30420517
Klíčová slova: Magnetospheric Line Radiation * MLR * DEMETER
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
Impakt faktor: 3.082, rok: 2009
http://onlinelibrary.wiley.com/doi/10.1029/2008JA014016/abstract

Magnetospheric line radiation (MLR) events are electromagnetic waves in the frequency range between about 1 and 8 kHz that, when presented as a frequency-time spectrogram, take the form of nearly parallel and clearly defined lines, which sometimes drift slightly in frequency. They have been observed both by satellites and ground-based instruments, but their origin is still unclear. We present a survey of these MLR waves observed by the DEMETER spacecraft (at an altitude of about 700 km). Three years of VLF Survey mode data were manually searched for MLR events, creating the largest event satellite database of about 650 events, which was then used to investigate the wave properties and geographical occurrence. Finally, the most favorable geomagnetic conditions (Kp and Dst indices) for the occurrence of MLR events have been found. It is shown that MLR events occur mostly at L > 2, they occur primarily inside the plasmasphere, and there is a lower number of events occurring over the Atlantic Ocean.
Trvalý link: http://hdl.handle.net/11104/0176477