  The time dependent neutrino oscillation signals due to the passage of a shock
wave through the supernovae are analyzed for the case of three active neutrinos
and also for the case that there are two additional sterile neutrinos. It is
shown that, even without flavour identification and energy measurement,
detailed information about the masses and mixing angles of the neutrinos may be
obtained with a detector with excellent time resolution such as IceCube. Such a
signal would also give important information about the nature of the shock wave
within the supernovae.
