  We investigate the signal from supernova relic neutrinos in future large
scale observatories, such as MEMPHYS (UNO, Hyper-K), LENA and GLACIER, at
present under study. We discuss that complementary information might be gained
from the observation of supernova relic electron anti-neutrinos and neutrinos
using the scattering on protons on one hand, and on nuclei such as oxygen,
carbon or argon on the other hand. When determining the relic neutrino fluxes
we also include, for the first time, the coupling of the neutrino magnetic
moment to magnetic fields within the core-collapse supernova. We present
numerical results on both the relic electron neutrino and anti-neutrino fluxes
and on the number of events for electron neutrinos on carbon, oxygen and argon,
as well as electron anti-neutrinos on protons, for various oscillation
scenarios. The observation of supernova relic neutrinos might provide us with
unique information on core-collapse supernova explosions, on the star formation
history and on neutrino properties, that still remain unknown.
