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Let $A$ be an abelian variety over a discretely valued field. Edixhoven hasdefined a filtration on the special fiber of the N\'eron model of $A$ thatmeasures the behaviour of the N\'eron model under tame base change. Weinterpret the jumps in this filtration in terms of lattices of logarithmicdifferential forms in the case where $A$ is the Jacobian of a curve $C$, and wegive a compact explicit formula for the jumps in terms of the combinatorialreduction data of $C$.

A logarithmic interpretation of Edixhoven's jumps for Jacobians