  Following Waxman and Bahcall we calculate the event rate, energy and zenith
angle dependence of neutrinos produced in the fireball model of gamma ray
bursts (GRB). We emphasize the primary importance of i) burst-to-burst
fluctuations and ii) absorption of the neutrinos in the Earth. From the
astronomical point of view, we draw attention to the sensitivity of neutrino
measurements to the boost Lorentz factor of the fireball $\Gamma$, which is
central to the fireball model, and only indirectly determined by follow-up
observations. Fluctuations result in single bursts emitting multiple neutrinos,
making it possible to determine the flavor composition of a beam observed after
a baseline of thousands of Megaparsecs.
