  We study numerically the spin turbulence in spin-1 ferromagnetic spinor
Bose-Einstein condensates (BECs). Spin turbulence (ST) is characterized by a
-7/3 power law in the spectrum of the spin-dependent interaction energy. The
direction of the spin density vector is spatially disordered but temporally
frozen in ST, showing some analogy with the spin glass state. Thus, we
introduce the order parameter of spin glass into ST in spinor BECs. When ST
develops through some instability, the order parameter grows with a -7/3 power
law, thus succeeding in describing ST well.
