Ultra High Energy Neutrinos in the Mediterranean: detecting nu_tau and   nu_mu with a km^3 Telescope
  We perform a study of the ultra high energy neutrino detection performances of a km^3 Neutrino Telescope sitting at the three proposed sites for ANTARES, NEMO and NESTOR in the Mediterranean sea. We focus on the effect of the underwater surface profile on the total amount of yearly expected tau and mu crossing the fiducial volume in the limit of full detection efficiency and energy resolution. We also emphasize the possible enhancement of matter effect by a suitable choice of the geometry of the Telescope. 
A. Cuoco, G. Mangano, G. Miele, S. Pastor, L. Perrone, O. Pisanti and   P.D. Serpico