P.S. Hill D.A. George 2009 An analysis of concepts presented by George and Hill [George, D.A., Hill, P.S., 2008. Wave climate, sediment supply and the depth of the sand-mud transition: A global survey. Marine Geology, 254, 121-128.] regarding the depth of the sand-mud transition (h_SMT) was performed by Guill??n and Jim??nez [Jorge Guill??n and Jos?? A. Jim??nez, Comment on "Wave climate, sediment supply and the depth of the sand-mud transition: A global survey" by D.A. George and P.S. Hill [Marine Geology 254 (2008) 121-128], Marine Geology, in press]. We are pleased that our proposed definition of the h_SMT was confirmed to be appropriate. We are encouraged that the authors agree that wave period and wave height should both be used to determine h_SMT as we demonstrated in our Eq. (1), which calculates the bed shear stress at h_SMT. More in-depth research should focus on characterizing the role of sediment supply in determining h_SMT. ?? 2009 Elsevier B.V. All rights reserved. application/pdf 10.1016/j.margeo.2009.06.007 en Reply to the Comment on "Wave climate, sediment supply and the depth of the sand-mud transition: A global survey" by D.A. George and P.S. Hill [Marine Geology 254 (2008) 121-128] article