Added new zisodisp structure

src/module_definitions.f90

@@ -325,6 +325,13 @@ module definitions
 
       end interface
 
+!=====[ZISODISP================================================================
+! type ziso is used to store the isostatic deflection of the basal boundary
+! due to isostasy
+
+      type ziso
+        double precision,dimension(:,:),pointer::zisodisp
+      end type ziso
 
 end module definitions