Composite velocity map derived from IRIS spectral and SJI observations between 15:10 and 15:27 UT. Doppler velocity is shown in the background with the red-blue colorbar. Negative velocities indicate horizontal motions moving towards the observer (blueshifts). Streamlines show the direction of the POS velocity, their color give the value of the POS velocity, and their thickness is related to the observed intensity in IRIS SJI.
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