@misc{Wygant_2022, title={Van Allen Probe A Spectrogram Data}, url={https://hpde.io/NASA/NumericalData/RBSP/A/EFW/L2/SPEC/PT4S.html}, DOI={10.48322/78PF-4K59}, abstractNote={This data set contains Level 2 wave electric field and search coil wave magnetic fields spectral data from the Electric Field and Waves Suite (EFW) onboard Van Allen Probe A. Spectrograms between ~40 Hz and ~8 kHz are calculated on-board the EFW instrument every 4 seconds. These data include one component of the ac-coupled electric field from the rotating V12 sensors (V12ac). The electric field quantity is labeled EFW/L2. Also included are two components of the wave magnetic field from the University of Iowa EMFISIS sensors. The search coil quantities are labeled EFW/L2 spec64 smu. In the labels "smu" and "smv", the suffixes "u" and "v" refer to the u and v sensor coordinates rotating with the spacecraft. All these quantities, the nature of the on board signal processing, their filtering, time resolution and their respective coordinate systems are described in the EFW instrument paper (Wygant et al. 2013).}, publisher={NASA Space Physics Data Facility}, author={Wygant, John R.}, year={2022}, language={en} }