Abstract
Using an automated novel approach we conduct a reproducible systematic
survey of electromagnetic ion cyclotron wave activity detected by Van
Allen Probe B during the time period 2013 January 1 – 2019 July 15. We
identify approximately 500 hours of EMIC wave activity, an occurrence
rate of ∼ 0.85%. Accounting for satellite dwell time, we find that
EMIC waves preferentially occur on the dayside, between 9 and 15
magnetic local time. This is true for both the H+ and He+ wavebands.
Higher amplitude waves are found at higher values of L shell, while
weaker waves occur at low L. The highest amplitudes are concentrated at
high L near dawn and dusk. It is also found that EMIC wave occurrence is
enhanced during periods of strong geomagnetic activity, with an
occurrence rate of 2.7%. During storm times, waves preferentially occur
in the afternoon and early evening sectors. The full list of
electromagnetic ion cyclotron wave detection times and their properties
is made publicly available to the community. This provides a reference
catalog for comparison with other magnetospheric phenomena and other
wave databases.