Browsing Reports by Issue Date

Now showing items 21-40 of 120

    • Simulation of the Continuous Snowmelt Process 

      Laramie, Richard L.; Schaake, Jr., John C. (Cambridge Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Massachusetts Institute of Technology, 1972-01)
      The efficient design of many water management projects requires the ability to predict the time distribution of runoff from a melting snowfield. A continuous model of the snow accumation and melting processes is presented ...

    • A Mathematical Model for the Prediction of Unsteady Salinity Intrusion in Estuaries 

      Thatcher, M. Llewellyn; Harleman, Donald R. F. (Cambridge, Mass. : Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Department of Civil Engineering, Massachusetts Institute of Technology, 1972-02)
      The salinity structure of a tidal estuary fed by upstream fresh water sources is an important factor of water quality. In addition, this structure is intimately related to the circulation of the estuary because of density ...

    • Wave Reflection and Transmission at Permeable Breakwaters 

      Sollitt, Charles K.; Cross, III, Ralph H. (Cambridge, Mass. : Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Department of Civil Engineering, Massachusetts Institute of Technology, 1972-03)
      Rubble mound breakwaters are designed to protect exposed marine areas from excessive wave activity. Observations of breakwaters interacting with surface waves in laboratory models and in full scale field applications ...

    • Mass Transport in Water Waves Part I: Theory 

      Mei, Chiang C.; Liu, Philip L-F. (Cambridge, Mass. Dept. of Civil Engineering, Massachusetts Institute of Technology, 1972-04)
      When a fluid is in periodic wave motion, a fluid particle is carried by a velocity field varying from place to place. At different instants the location of the particle differs and so does the velocity field in its immediate ...

    • Mathematical Simulation of Tidal Time-averages of Salinity and Velocity Profiles in Estuaries 

      Fisher, John S.; Ditmars, John D.; Ippen, Arthur T. (1972-07)

    • Prediction of Unsteady Salinity Intrusion in Estuaries: Mathematical Model and User's Manual 

      Thatcher, M. Llewellyn; Harleman, Donald R. F. (Cambridge, Massachusetts : Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Dept. of Civil Engineering, School of Engineering, Massachusetts Institute of Technology, 1972-11)
      Foreword: This report is intended as a documentation of the computer program and as a user's manual for the implementation of the mathematical model for the prediction of unsteady salinity intrusion in estuaries. The details ...

    • An Analytical and Experimental Study of Transient Cooling Pond Behavior 

      Ryan, Patrick J.; Harleman, Donald R. F. (Cambridge : Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Dept. of Civil Engineering, Massachusetts Institute of Technology, 1973-01)
      Cooling ponds offer many advantages as a means of closed cycle heat dissipation. These are simplicity, low maintenance.and power requirements, aesthetic and possible recreational values, and high thermal inertia. A cooling ...

    • Mathematical Models of the Massachusetts Bay 

      Connor, Jerome J.; Wang, John D.; Briggs, Douglas A.; Madsen, Ole S.; Christodoulou, Georgios C.; e.a. (Cambridge, Mass. : Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Dept. of Civil Engineering, School of Engineering, Massachusetts Institute of Technology, 1973-10)
      Part 1. The vertically integrated conservation of mass and momentum equations for shallow water bodies are reviewed. The equations used in this study are based on only two assumptions: hydrostatic pressure and squares of ...

    • The Design of Rainfall Networks in Time and Space 

      Rodriguez-Iturbe, Ignacio; Mejia, Jose M. (Cambridge, Mass. : Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Dept. of Civil Engineering, Massachusetts Institute of Technology, 1973-11)
      A methodology for the design of precipitation networks is formulated. The network problem is discussed in its general conception and then focus is made in networks to provide background information for the design of more ...

    • The Methodology of Bayesian Inference and Decision Making Applied to Extreme Hydrologic Events 

      Wood, Eric F.; Rodriguez-Iturbe, Ignacio; Schaake, Jr., John C. (Cambridge, Mass. : Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Department of Civil Engineering, Massachusetts Institute of Technology, 1974-01)
      This study presents the methodology of Bayesian inference and decision making applied to extreme hydrologic events. Inference procedures must consider both the natural or 'modelled' uncertainty of the hydrologic process ...

    • Stochastic Modeling of Groundwater Systems 

      Gelhar, Lynn W.; Ko, Peter Y.; Kwai, Herman H.; Wilson, John L. (Cambridge, Mass. : Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Dept. of Civil Engineering, Massachusetts Institute of Technology, 1974-09)
      This research developed important new results on the use of spectral analysis techniques to evaluate groundwater resources. The linear theory of aquifer spectral response in the frequency domain is developed, including ...

    • Evaluation of Techniques for Numerical Calculation of Storm Surges 

      Pagenkopf, James R.; Pearce, Bryan R. (Cambridge Massachusetts Institute of Technology. Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, 1975-02)
      Two numerical models are employed to describe the water motion in a coastal region associated with the passage of a hurricane or severe storm. The first is two-dimensional, employs the vertically integrated or "tidal" ...

    • Theoretical and Experimental Investigation of Emergency Heat Releases from Floating Nuclear Power Plants 

      Jirka, Gerhard H.; Wood, Duncan W.; Harleman, Donald R. F. (Cambridge : Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Dept. of Civil Engineering, Massachusetts Institute of Technology, 1975-11)
      A combined analytical and experimental study is made of the hydrodynamic and heat transport aspects of transient heat releases during emergency cooling operations at floating nuclear power plants located in protective ...

    • MINEQL: A Computer Program for the Calculation of Chemical Equilibrium Composition of Aqueous Systems 

      Westall, John C.; Zachary, Joseph L.; Morel, Francois M. M. (Cambridge, Mass. : Water Quality Laboratory, Ralph M. Parsons Laboratory for Water Resources and Environmental Engineering sic, Dept. of Civil Engineering, Massachusetts Institute of Technology, 1976)
      Introduction: This report describes the computer program for the computation of chemical equilibria in aqueous systems, MINEQL. The purpose of the report is to present the program in sufficient detail that the reader not ...

    • Sediment Transport in the Coastal Environment 

      Madsen, Ole Secher; Grant, William D. (Cambridge, Mass. : Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Dept. of Civil Engineering, Massachusetts Institute of Technology, 1976-01)
      The subject of sediment transport in the coastal zone is investigated and the answers to some of the basic questions of sediment transport in unsteady, oscillatory flow are presented. By adopting Jonsson's (1966) results ...

    • Groundwater Pollution: Technology, Economics and Management 

      Wilson, J. L.; Lenton, R. L.; Porras, J. (Cambridge : Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Dept. of Civil Engineering, School of Engineering, Massachusetts Institute of Technology, 1976-01)
      A review of the technical, economic and management aspects of groundwater pollution is presented. The groundwater pollution problem is described and several of its important characteristics are pointed out. A description ...

    • Staged Diffusers in Shallow Water 

      Almquist, Charles W.; Stolzenbach, Keith D. (Cambridge, Mass. : Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Dept. of Civil Engineering, Massachusetts Institute of Technology, 1976-06)
      The discharge of waste heat from electric power plants into natural water bodies has the potential for adversely affecting the aquatic ecology of the receiving water. Because each discharge site has its own physical and ...

    • Modelling of Unidirectional Thermal Diffusers in Shallow Water 

      Lee, Joseph H.; Jirka, Gerhard H.; Harleman, Donald R. F. (Cambridge, Mass. : Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Dept. of Civil Engineering, Massachusetts Institute of Technology, 1977-07)
      This study is an experimental and theoretical investigation of the temperature field and velocity field induced by a unidirectional thermal diffuser in shallow water. A multiport thermal diffuser is essentially a pipe laid ...

    • Ocean Thermal Energy Conversion Plants: Experimental and Analytical Study of Mixing and Recirculation 

      Jirka, Gerhard H.; Johnson, R. Peter; Fry, David J.; Harleman, Donald R. F. (Cambridge : Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Massachusetts Institute of Technology. Department of Civil Engineering, 1977-09)
      Ocean thermal energy conversion (OTEC) is a method of generating power using the vertical temperature gradient of the tropical ocean as an energy source. Experimental and analytical studies have been carried out to determine ...

    • A Stochastic Dynamic Programming Model for the Operation of the High Aswan Dam 

      Alarcon, Luis F.; Marks, David H. (Cambridge, Mass. : Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Dept. of Civil Engineering, Massachusetts Institute of Technology, 1979-11)
      With the construction of the High Aswan Dam in Egypt, reliable irrigation throughout the whole year and the use of water for the generation of a high percentage of the electricity needs of the country are possible. Moreover, ...