The SwRI team, led by space physicist David McComas, was starting up IBEX's high-speedparticle detector just as the moon passed in front of its field of view.
Near some sprites, the team also found radio waves in 310-mile-wide (500-kilometer-wide) bands-and these radio waves were most likely being emitted by high-speedparticle beams.
The velocity field measurement by use of the particle image velocimetry and particle tracking velocimetry ( PIV/PTV) system in a tidal estuary model test has advantages of highspeed and accuracy.