Abstract
We don't understand enough communication mechanism of pore water pressure on slip surface.
In the present paper, we shall try to make a few new theoretical models of complicated mechanism of ground water level fluctuation in landslide areas.
By the modeling of mechanism, we shall be able to catch both timelags between rainfall and ground water level fluctuation and the fluctuation size is a match for rainfall.
We design two theoretical models, tank model and Ψ function model. After that, we explain theory of each model. And we set standards of modeles for valuation. Therefore we provided two models that is effective to understand properties of ground water level fluctuation in landslide areas.
