Index: /issm/trunk/src/m/model/marshall.m
===================================================================
--- /issm/trunk/src/m/model/marshall.m	(revision 8540)
+++ /issm/trunk/src/m/model/marshall.m	(revision 8541)
@@ -202,4 +202,6 @@
 WriteData(fid,md.hydro_gamma,'Scalar','hydro_gamma'); 
 WriteData(fid,md.hydro_kn,'Scalar','hydro_kn');
+WriteData(fid,md.hydro_p,'Scalar','hydro_p');
+WriteData(fid,md.hydro_q,'Scalar','hydro_q');
 WriteData(fid,md.meltingpoint,'Scalar','meltingpoint');
 WriteData(fid,md.referencetemperature,'Scalar','referencetemperature');