  Vibrations can dynamically stabilize otherwise unstable liquid interfaces and
produce new dynamic equilibria, called vibro-equilibria. Typically, the
vibrations are homogeneous in the liquid and the liquid interface remains
approximately flat. Here, we produce controlled vertical vibration gradients by
taking advantage of the resonant oscillations of sinking submerged bubbles. The
locally increased amplitude of the vibrations induces a local elevation of the
liquid interface that can be controlled and engineered. The mean elevation of
the interface can be linked theoretically with the local vibration amplitude by
a simple formula that is tested experimentally. In addition, the transport of a
floating body at the interface can be induced by secondary flows triggered by
the amplitude gradients of the liquid vibrations.
