Identifying trends in sediment discharge from alterations in upstream land use
Effects of scale on interpretation and management of sediment and water quality. Proc. symposium, Boulder, 1995
By: R. S. Parker and W. R. Osterkamp
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Abstract
Environmental monitoring is a primary reason for collecting sediment data. One emphasis of this monitoring is identification of trends in suspended sediment discharge. A stochastic equation was used to generate time series of annual suspended sediment discharges using statistics from gaging stations with drainage areas between 1606 and 1 805 230 km2. Annual sediment discharge was increased linearly to yield a given increase at the end of a fixed period and trend statistics were computed for each simulation series using Kendal's tau (at 0.05 significance level). A parameter was calculated from two factors that control trend detection time: (a) the magnitude of change in sediment discharge, and (b) the natural variability of sediment discharge. In this analysis the detection of a trend at most stations is well over 100 years for a 20% increase in sediment discharge. Further research is needed to assess the sensitivity of detecting trends at sediment stations.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Identifying trends in sediment discharge from alterations in upstream land use |
| Series title | Effects of scale on interpretation and management of sediment and water quality. Proc. symposium, Boulder, 1995 |
| Volume | 226 |
| Year Published | 1995 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Effects of scale on interpretation and management of sediment and water quality. Proc. symposium, Boulder, 1995 |
| First page | 207 |
| Last page | 213 |
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