  In this talk I summarize recent work done in collaboration with Cliff Burgess
and Denis Michaud, in which we performed a detailed investigation of how solar
neutrinos propagate through helioseismic waves. We find that the MSW solar
neutrino spectrum is not modified at all in the presence of seismic waves. This
finding differs from earlier estimates mainly because most helioseismic waves
are too weak in the vicinity of the MSW resonance to be of relevance for
neutrino propagation. A special class of waves may however by subject to an
instability and potentially have very large amplitudes. These waves do have
long wavelengths, a situation for which the formalism employed in earlier
analyses does not apply. Our numerical simulation significantly reduces their
influence on neutrino propagation.

High Energy Physics - Phenomenology