  We discuss and model an experiment to study quasi-condensate growth on an
atom chip. In particular, we consider the addition of a deep dimple to the weak
harmonic trap confining an ultracold one-dimensional atomic Bose gas, below or
close to the characteristic temperature for quasi-condensate formation. The
subsequent dynamics depends critically on both the initial conditions, and the
form of the perturbing potential. In general, the dynamics features a
combination of shock-wave propagation in the quasi-condensate, and
quasi-condensate growth from the surrounding thermal cloud.
