Research Catalog

Title

Modelling surface runoff and soil erosion in catchments using geographical information systems : validity and applicability of the 'ANSWERS' model in two catchments in the loess area of South Limburg (The Netherlands) and one in Devon (UK) / A.P.J. de Roo.

Author

Roo, A. P. J. de, 1963-

Publication

[Amsterdam] : Koninklijk Nederlands Aardrijkskundig Genootschap ; Utrecht : Faculteit Ruimtelijke Wetenschappen, Rijksuniversiteit Utrecht, 1993.

Items in the Library & Off-site

Details

Additional Authors

Rijksuniversiteit te Utrecht. Faculteit Ruimtelijke Wetenschappen

Description

295 p. : ill., maps; 24 cm.

Series Statement

Nederlandse geografische studies = Netherlands geographical studies, 0169-4839 ; 157

Uniform Title

Nederlandse geografische studies 157.

Subject

• Runoff > Data processing
• Soil erosion > Data processing
• Geographic information systems
• Geographic Information Systems

Genre/Form

• geographic information systems.
• Geographic information systems
• Systèmes d'information géographique.

Note

• English, with a summary and vita in Dutch.
• Presented also as author's thesis (Exeter).
• Vita, p. 295.

Bibliography (note)

• Includes bibliographical references (p. 281-293).

Processing Action (note)

• committed to retain

Contents

SOIL EROSION IN SOUTH-LIMBURG: CONDITIONS AND EFFECTS: Rainfall -- Topography and slope gradient -- Stability, soil erodibility and surface sealing -- Infiltraion capacity of loess soils -- Land use in South-Limburg -- Effects of soil erosion -- PHYSICAL AND HYDROLOGICAL CHARACTERISTICS OF THE RESEARCH CATCHMENT: The Etzenrade catchment -- The Catsop catchment -- The Yendacott catchment -- Comparison of catchments -- SOIL EROSION MODELS: The contribution of models to science -- The purpose of modelling soil erosion and some criteria for model selection -- Review of major mathematical deterministic soil erosion models -- THE 'ANSWERS' MODEL: Conceptual structure of the 'ANSWERS' model -- Component relationships used in the 'ANSWERS' model -- Linking 'ANSWERS' to a Geographical Information System -- Mathematical model validation -- Reasons for using the 'ANSWERS' model -- Applicability of the 'ANSWERS model -- SENSITIVITY ANALYSIS OF THE 'ANSWERS' MODEL: Sensitivity to the structural parameters of the 'ANSWERS' model -- Sensitivity to the catchment variables of the model -- Sensitivity of rainfall intensity and spatial distribution of rainfall -- SPATIAL AND TEMPORAL VARIABILITY OF INFILTRATION IN THE ETZENRADE CATCHMENT: Infiltration equations and the 'ANSWERS' model -- Sampling and experimental setup -- Infiltration rate of loess soils under winter fallow and its spatial variability -- Fitting the Holtan equation parameters to the experimental data -- Evaluation of the Holtan/Overton infiltration model -- Crusting and infiltration -- The influence of crusting on infiltration rate -- Modelling the influence of crusting on infiltration -- Implications of sensitivity and variability for modelling surface runoff and soil erosion -- SOIL ERODIBILITY: Methods to calculate the USLE K-factor -- Determination of soil erodibility using a suspended solids sensor: experimental setup -- Sampling -- Spatial variability of the USLE, Romkens and Martin K-factor -- Temporal variability of the K-factor -- Results of the suspended solids sensing method -- 137CS AS A TRACER OF SOIL EROSION AND A TOOL FOR VALIDATING MODELS: Mapping soil erosion -- The 137Cs method -- Aim of the study -- Field and laboratory methods -- 137Cs in the Etzenrdde catchment -- Modelling bomb 137Cs using landscape factors -- Comparing bomb 137Cs with USLE estimates -- Discussion of errors -- NECESSARY MODIFICATIONS TO THE ANSWERS MODEL: The need for model modifications -- Introducing the concept of variable contributing areas into 'ANSWERS': modelling saturation overland flow -- Modelling the effects of roads -- Modelling daily soil moisture fluctuations -- Modelling the effects of crusting on infiltration -- MODEL VALIDATION: Validating distributed hydrological and soil erosion models -- Validating 'ANSWERS' in the Etzenrade catchment -- Validating 'ANSWERS' in the Catsop catchment -- Validating 'ANSWERS' in the Yendacott catchment -- ESTIMATING THE EFFECTS OF SPATIAL VARIABILITY OF INFILTRATION ON THE OUTPUT OF A DISTRIBUTED RUNOFF AND SOIL EROSION MODEL USING MONTE CARLO METHODS: Methods -- Results baseline conditions: using median infiltration values -- Results approach 1: no spatial correlation (100% nugget) -- Results approach 2: random correlation -- COMPARING FOUR DIFFERENT SOIL EROSION MODELS: A COST-EFFECTIVENESS ANALYSIS: Description of the models -- Simulation procedures -- Required input data -- Computing time -- Simulation results -- ERROR ANALYSIS AND IMPROVEMENTS OF EROSION MODELS: Error analysis -- Improving erosion models.

ISBN

9068091670

LCCN

^^^94133135^

OCLC

• 29240143
• SCSB-11791848

Owning Institutions

Harvard Library