Index: /issm/trunk-jpl/src/m/classes/geometry.m
===================================================================
--- /issm/trunk-jpl/src/m/classes/geometry.m	(revision 11805)
+++ /issm/trunk-jpl/src/m/classes/geometry.m	(revision 11806)
@@ -39,4 +39,7 @@
 				checkmessage(['equality thickness=surface-bed violated']);
 			end 
+			if solution==TransientSolutionEnum & md.transient.isgroundingline,
+				checkfield(md,'geometry.bathymetry','NaN',1,'size',[md.mesh.numberofvertices 1]);
+			end
 		end % }}}
 		function disp(obj) % {{{