HILLSLOPE HYDROGRAPHS BY THE FINITS ELEMENT METHOD

Simulation models may be used to explore the implications of making specific assumptions about the nature of a real world system, and then to make predictions of the behaviour of the system under a set of naturally occurring conditions. It is important that understanding generated by the former should be gained before predictive use of the system model. This paper describes and uses a finite-element model of transient, partially saturated water flow within a hillslope soil mantle overlying an impermeable bedrock, to make an investigation into the effects of parameter variations and initial conditions on the hillslope hydrograph. The results clearly demonstrate that the response of the hillslope system to rainfall is highly non-linear and that the initial conditions, particularly in the unsaturated zone are of paramount importance in governing the timing and magnitude of the hydrograph peak. Hillslope covergence appears as the dominant topographic parameter but the non-linearity of the response and the complex interdepandence between the soil and topographic parameters restrict the possiblity of further definite conclusions about the relative sensitivity of the simulated hillslope hydrograph to changes in these parameters. /Author/

• Corporate Authors:

  John Wiley & Sons, Incorporated

  111 River Street
  Hoboken, NJ  United States  07030-6000
• Authors:
  • Beven, K
• Publication Date: 1977-3

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 13-28
• Serial:
  • Earth Surface Processes
  • Volume: 2
  • Issue Number: 1
  • Publisher: John Wiley & Sons, Incorporated

Subject/Index Terms

• TRT Terms: Bedrock; Finite element method; Flow; Forecasting; Hydrographs; Nonlinear systems; Rainfall; Simulation; Slopes; Soils; Streamflow; Topography; Water
• Uncontrolled Terms: Nonlinearity
• Old TRIS Terms: Hillslopes
• Subject Areas: Geotechnology; Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00156144
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 23 1977 12:00AM