Wolf, Detlef2010-02-082016-03-312010-02-082016-03-311985321595580http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-50663http://elib.uni-stuttgart.de/handle/11682/7139http://dx.doi.org/10.18419/opus-7122The flexure of an incompressible, thick elastic plate floating on an inviscid substratum and subject to an external gravity field is re-analysed. The solution is derived from momentum equations which account for the advection of hydrostatic pre-stress. This is contrasted with a recently published thick-plate solution derived from momentum equations without a pre-stress term. It is demonstrated that neglecting pre-stress advection renders the solution singular when the model degenerates into an inviscid half-space. If pre-stress advection is included, the solution remains correct in this limit. A numerical comparison of both types of thick-plate solution with results based on conventional thin-plate theory further shows that, for geophysically relevant models, the difference in the momentum balance entails discrepancies between the thick-plate solutions which are comparable to the errors introduced by the thin-plate approximation.eninfo:eu-repo/semantics/openAccessPlatte <Geologie> , Faltung <Geologie>550article2010-09-30