  Collisionless shocks and plasma turbulence are crucial ingredients for a
broad range of astrophysical systems. The shock-turbulence interaction, and in
particular the transmission of fully developed turbulence across the
quasi-perpendicular Earth's bow shock, is here addressed using a combination of
spacecraft observations and local numerical simulations. An alignment between
the Wind (upstream) and MMS (downstream) spacecraft is used to study the
transmission of turbulent structures across the shock, revealing an increase of
their magnetic helicity content in its downstream. Local kinetic simulations,
in which the dynamics of turbulent structures is followed through their
transmission across a perpendicular shock, confirm this scenario, revealing
that the observed magnetic helicity increase is associated with the compression
of turbulent structures at the shock front.
