K e y w o r d s S y s t e m of nonlinear equations, Ice sheet models. 1. THE MODEL EQUATIONS To show the re la t ionship between mul t iva lued flux laws and the sudden and rapid movemen t s of the ice sheets (surging) oscil lat ing be tween slow and fast flow regimes, it is useful to consider the (simple) pa rame te r i zed 0-D model proposed by Fowler and Johnson [1]. Neglect ing spat ia l de...

One of the main features of the Minimal Supersymmetric Standard Model (MSSM) is the existence of an absolute tree-level upper bound mh on the mass of the CP = +1 lightest Higgs boson, equal to mZ , that could affect detectability at future colliders. The above bound is spoiled by radiative corrections and by an enlarged Higgs sector, as e.g. a gauge singlet. Radiative corrections in the MSSM ca...

An upper bound on the tree-level mass of the lightest Higgs boson of the Supersymmetric Singlet Majoron Model is obtained. Contrary to some recent claims, it is shown to be of the same form as the general mass bound previously calculated for supersymmetric models with an extended Higgs sector. Soft-breaking masses or exotic vacuum expectation values do not enter in the tree-level bound [which i...