Seismology of solar spicules based on Hinode/SOT observations

We analyze the time series of Ca ii H-line obtained from Hinode/SOT on the solar limb. The time-distance analysis shows that the axis of spicule undergos quasi- periodic transverse displacement. We determined the period of transverse displacement as  40 _ 150±8 s and the mean amplitude as  0:1 _ 0:5 arc sec. For the oscillation wavelength of   1/0.06 arc sec  11500 km, the estimated kink speed is  13_ 83 km s -1. We obtained the magnetic eld strength in spicules as B0 = 2 _ 12:5±1 G and the energy ux as 7 { 227 Jm -2 s -1.