We present an algorithm for measuring the speed and thickness of reaction fronts, and from
those quantities, the diffusivity and the reaction rate of the active chemical species. This front-
tracking algorithm provides local measurements suitable for statistics and requires only a
sequence of concentration fields. Though our eventual goal is front tracking in advection-
reaction-diffusion, here we demonstrate the algorithm in reaction-diffusion. We test the
algorithm with validation data in which front speed and thickness are prescribed, as well as …