Thursday

Dynamical behavior in spicular waveguide reflects the embedded wave-mode(s), and is key to the understanding of their role in mass, energy and momentum transfer across the Interface-Region. The transverse, torsional and field-aligned motions of spicules have previously been observed in imaging-spectroscopy and analyzed separately for wave-mode identification. Here, we have combined the line-of-sight (LOS) and plane-of-sky (POS) velocity components, using the high spatial/temporal resolution Hα imaging-spectroscopy data from the CRisp Imaging SpectroPolarimeter (CRISP) based at the Swedish Solar Telescope (SST) to achieve a better understanding of these motions as a whole. Coupled evolution of LOS and POS velocity components, along with intensity variations indicate presence of both compressible and incompressible wave-modes in spicular structures. Observations of these coupled wave-modes and their interpretation in spicule structures will be discussed. The talk will emphasise the combined LOS and POS dynamics in fine temporal and spatial scale evolution of resultant 3D components, but also on more precise interpretation of wave-mode(s) embedded in the observed waveguides.