<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; ">Hi Andre<DIV> we have in press also a paper on the effects of earth sphericity on trench deformation in subduction and the effects of earth curvature are visible but small for a 2000km wide plate. We used abaqus for it. You can have a look on:</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><BR class="khtml-block-placeholder"></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#000000">G. Morra</FONT><FONT class="Apple-style-span" color="#000000">, K. Regenauer-Lieb and D. Giardini</FONT><FONT class="Apple-style-span" color="#000000"> </FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-style-span" style="text-decoration: underline; "><FONT class="Apple-style-span" color="#000000">Curvature of Oceanic Arcs</FONT></SPAN><FONT class="Apple-style-span" color="#000000"> </FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#000000">Geology</FONT><FONT class="Apple-style-span" color="#000000">, in press in October 2006 </FONT><A href="http://www.gfd.geophys.ethz.ch/~gabrielemorra/pdf/easyPreprint.pdf"><FONT class="Apple-style-span" color="#000000">PDF</FONT><FONT class="Apple-style-span" color="#000000"> </FONT></A></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><BR class="khtml-block-placeholder"></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">the pdf is on</DIV><DIV><A href="http://www.gfd.geophys.ethz.ch/~gabrielemorra/">http://www.gfd.geophys.ethz.ch/~gabrielemorra/</A></DIV><DIV>you can compare those effects with the one that you obtain from rebound. </DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Gabriele</DIV><DIV><BR><DIV><DIV>On Jul 26, 2006, at 12:48 PM, Andre Gebauer wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Dear GEOQUS-members,</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">I have a little problem. The model that should be created has a dimension of</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">1800x1800x760 km (l w h ). This model should show vertical deformations by</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">loading of<SPAN class="Apple-converted-space"> </SPAN>air pressure (not considered is the<SPAN class="Apple-converted-space"> </SPAN>attraction effect of the</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">airmass). The vertical displacement is only determined of several singular</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">places. So only the nearer proximity of the places is viewed.</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Now the question: Should this model be calculated spherical?</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">The most papers says – no. f. e.:</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Wolf, D. (1984). The relaxation of spherical and flat Maxwell Earth models</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">and effects due to the presence of the lithosphere. J. Geophys., 56,</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">24-33.</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Amelung, F. and Wolf, D. (1994). Viscoelastic perturbations of the Earth:</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">significance of the incremental gravitational force in models of glacial</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">isostasy. Geophys. J. Int., 117 (3), 864-879.</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Wu, P. and Johnston, P. (1998). Validity of using flat-earth finite</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">element models in the study of postglacial rebound. In P. Wu, editor,</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Dynamics of the Ice Age Earth: A Modern Perspective, pages 191-202. Trans</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Tech Pub., Zurich, Switzerland.</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Wu, P., Z. Ni & G. Kaufmann, Postglacial Rebound with Lateral Heterogeneities :</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">from 2D to 3D modeling.in "Dynamics of the Ice Age Earth: A Modern Perspective"</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">edited by P.Wu, Trans Tech Publ., Switzerland, p.557-582 (1998).</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">But someone gave me some doubts. If you have other papers or results for</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">modeling with flat earth please send them to me.</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Cheers,</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">André Gebauer</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">----------------------------------------------------------------</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">This mail was sent through <A href="http://webmail.uni-jena.de">http://webmail.uni-jena.de</A></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">_______________________________________________</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Geoqus mailing list</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A href="mailto:Geoqus@lists.ruhr-uni-bochum.de">Geoqus@lists.ruhr-uni-bochum.de</A></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A href="http://lists.ruhr-uni-bochum.de/mailman/listinfo/geoqus">http://lists.ruhr-uni-bochum.de/mailman/listinfo/geoqus</A></DIV> </BLOCKQUOTE></DIV><BR></DIV></BODY></HTML>