THE SCIENCE OF S.L. DINGMAN: THE APPLICATION OF PHYSICAL PRINCIPLES TO HYDROLOGIC PROBLEMS AT ITS BEST
Examples of his ability to summarize, apply physical principles and explain using mathematical reasoning the key hydrologic processes are apparent throughout Physical Hydrology in Box inserts located in virtually every chapter of the book. Many times I have referred to these concise descriptions in order to better understand and use hydrologic models and for deriving estimates of various quantities and rates of movement through the hydrologic cycle. I have also found rich content within Larry's research papers going back to his days at Harvard and CRREL.
I present here a concept that Larry never had the chance to explore while at UNH, but which was written on the white board in his office for at last two years, that I think deserves attention by fluvial morphologists: The application of Hamilton's Principle, stating that the difference between potential and kinetic energy within a dynamic system should be minimized such that Int(PE - KE)=( Min. Value) where the minimum value is a characteristic of the system, may be a productive approach to looking at flow resistance and downstream hydraulic processes in river systems.