  The Weil-Petersson and Takhtajan-Zograf metrics on the Riemann moduli spaces
of complex structures for an $n$-fold punctured oriented surface of genus $g,$
in the stable range $g+2n>2,$ are shown here to have complete asymptotic
expansions in terms of Fenchel-Nielsen coordinates at the exceptional divisors
of the Knudsen-Deligne-Mumford compactification. This is accomplished by
finding a full expansion for the hyperbolic metrics on the fibers of the
universal curve as they approach the complete metrics on the nodal curves above
the exceptional divisors and then using a push-forward theorem for conormal
densities. This refines a two-term expansion due to Obitsu-Wolpert for the
conformal factor relative to the model plumbing metric which in turn refined
the bound obtained by Masur. A similar expansion for the Ricci metric is also
obtained.
