Data Descriptions

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THEMIS Level 2 SCM file info:

Search Coil Magnetometer (SCM) Magnetic Field Measurements. Includes FAST SURVEY, PARTICLE BURST and WAVE BURST data. FAST SURVEY (SCF): 1/8 second time resolution. PARTICLE BURST (SCP): 1/128 second time resolution; only short bursts of data. WAVE BURST (SCW): 1/8192 second time resolution; only short bursts of data. Note that calibration parameters differ for the different modes; for SCF and SCP data, the following are used: mk = 8 (the convolution kernel used is 8 times the sample frequency), despin = 1 (use despin), n_spinfit = 2 (2 spins used to fit for misalignment, dc field calculation and despin, cleanup = 0 (no spin tone or 8/32 Hz tones), fdet = 0 (no detrend performed), fcut = 0.4 (low frequency cut-off for calibration), fmin = 0.8 (min frequency for filtering), fmax = 0 (use nyquist frequency for max frequency for filtering). For SCW data, the calibration parameters are: mk = 1, n_spinfit = 2, cleanup = 0, fdet = 0, fcut = 0.4, fmin = 2.0 , fmax = 0. An explanation of the SCM calibration parameters can be found in the SCM Calibration document.


Link to the SCM Data Variable Descriptions     Link to SCM Instrument Information
Link to the SCM Data Processing History