Julien, Pierre Y.: - Pierre Y. Julien is Professor of Civil and Environmental Engineering at Colorado State University. He has 40 years of experience in the fields of hydraulics, sedimentation, and river engineering. He has authored over 600 scientific contributions including two textbooks, 35 book chapters and manuals, 195 refereed articles, and over 250 conference papers and presentations. He has delivered 25 keynote addresses world-wide, taught 20 short courses, and has guided 40 Ph.D. and over 100 Masters students to graduation. His other two textbooks are Erosion and Sedimentation (Second Edition, 2010, Cambridge) and River Mechanics (Second Edition, 2018, Cambridge).