solo_L3_rpw-lfr-surv-swf-b data product is generated from solo_L2_rpw-lfr-surv-swf-b to display the magnetic field spectra evolution below 12288 Hz of the 3 components in the SRF frame. All snapshot types are used:

  • F2: 2048 points sampled at 256 Hz
  • F1: 2048 points sampled at 4096 Hz
  • F0: 2048 points sampled at 24576 Hz

Snapshots are organized in triplets (F2, F1, F0) and are centered on the same time t, with the next triplet centered on time t+Dt. Dt is variable, frequent values are 30 s, 100 s, 300 s. The snaphot F2 lasts 8 s, F1 lasts 0.5 s and F1 lasts 83 ms, but to make the graph readable, the spectra are represented with the resolution Dt
The frequency scale consists of three intervals [0 Hz, 112 Hz], [112 Hz, 1008 Hz] and [1008 Hz, 12288 Hz], each with its own resolution.
There are two pages: the first shows the density spectrograms of the three components of the magnetic field, and the second shows the median spectrum over the period and the spectrogram of density ratios relative to the median spectrum.

DOI: https://doi.org/10.57780/esa-3xcjd4w

Data product key facts
Type of data Spectrum
Intensity units log(nT^2/Hz) for page 1, log(ratio) for page 2
X-axis quantity Time
X-axis units Hours, Minutes, Seconds (HH:MN:SS)
X-axis resolution variable, typical values are 30 s, 100 s, 300 s
X-axis range [time of first snapshot, time of last snapshot]
X-axis scale Linear
Y-axis quantity Frequency
Y-axis units Hz
Y-axis resolution [0.5 Hz, 8 Hz, 48 Hz] depending on interval
Y-axis range [0 Hz, 112 Hz], [112 Hz, 1008 Hz] and [1008 Hz, 12288 Hz]
Y-axis scale linear by interval
Data format PNG
Granularity 1 file per day

To display it

Visit Display data page and select the type of data : SCM snapshot waveform spectrogram (Survey L2)

Authors

Matthieu Kretzschmar and Jean-Yves Brochot.

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