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This paper deals with the blow-up properties of solutions to a degenerate parabolic system coupled via nonlinear boundary flux. Firstly, we construct the self-similar supersolution and subsolution to obtain the critical global existence curve.  Secondly, we establish the precise blow-up rate estimates for solutions which blow up  in a finite time. Finally, we investigate the localization of blow-up points. The critical  curve of Fujita type is conjectured with the aid of some new results.

Blowup behaviors for degenerate parabolic equations coupled via nonlinear boundary flux