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Nature - autonomous learning

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Table 4.1 (a) The status of river variables during time spans of decreasing duration. Reproduced from Schumm and Lichty (1965)Status of variables during designated time spansRiver variables Geological Modern Present1 Time Independent Not relevant Not relevant2 Geology Independent Independent Independent3 Climate Independent Independent Independent4 Vegetation (type and density) Dependent Independent Independent5 Relief Dependent Independent Independent6 Palaeohydrology (long-term discharge of water and sediment) Dependent Independent Independent7 Valley dimensions (width, depth, slope) Dependent Independent Independent8 Mean discharge of water and sediment Indeterminate Independent Independent9 Channel morphology (width, depth, slope, shape, pattern) Indeterminate Dependent Independent10 Observed discharge of water and sediment Indeterminate Indeterminate Dependent11 Observed flow characteristics (depth, velocity, turbulence, etc.) Indeterminate Indeterminate Dependentcontinued

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