  We prove the short-time asymptotic formula for the interfaces and local
solutions near the interfaces for the nonlinear double degenerate
reaction-diffusion equation of turbulent filtration with strong absorption \[
u_t=\Big(|(u^{m})_x|^{p-1}(u^{m})_x\Big)_x-bu^{\beta}, \, mp>1, \, \beta >0. \]
Full classification is pursued in terms of the nonlinearity parameters $m,
p,\beta$ and asymptotics of the initial function near its support. Numerical
analysis using a weighted essentially nonoscillatory (WENO) scheme with
interface capturing is implemented, and comparison of numerical and analytical
results is presented.
