Dear David,

It took a bit of time, but I am sure that you appreciate the work required to get four companion manuscripts through the review process. Anyway, the outcome is surely gratifying for you and your co-authors, as I am happy to recommend the publication in Esurf of your four companion paper, in their present form.

Kind regards,

Eric

Thank you to the authors for perservering and carefully considering the reviews on these companion papers.
Thank you to the reviewers for accepting the challenge, and encouraging the authors to improve accessibility and utility of the manuscript.
There are few in the geomorphology community who could propose, or even analytically critique, the theory advanced in these companion papers. This is not, however, a reason not to publish in ESurf. Rather, this makes it all the more important. For geomorphology, which must rest on physical principles and in particular on fluid and granular mechanics, this series of papers will mark a milestone in laying a theoretical foundation for our discipline. I thank the authors for trusting ESurf to handle this important and difficult task.