  We study the distribution of the color fields due to a static quark-antiquark
pair in SU(2) lattice gauge theory. We find that the London penetration length
measured after Abelian projection in the Abelian Covariant gauge (Maximal
Abelian gauge) agrees with the one obtained without gauge fixing. Moreover the
penetration length scales according to asymptotic freedom. We put out a simple
relation between the penetration length and the string tension.
