| 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. |
| Genre: | Article |
| ProdID: | 70018898 |
| Citation Author: | Parker, R. S.; Osterkamp, W. R. |
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| Citation End Page: | 213 |
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| Citation Language: | English |
| Citation Larger Work Title: | Effects of scale on interpretation and management of sediment and water quality. Proc. symposium, Boulder, 1995 |
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| Citation Number Of Pages: | 7 |
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| Citation Search Results Text: | Identifying trends in sediment discharge from alterations in upstream land use; 1995; Article; Journal; Effects of scale on interpretation and management of sediment and water quality. Proc. symposium, Boulder, 1995; Parker, R. S.; Osterkamp, W. R. |
| Citation Start Page: | 207 |
| Citation Volume: | 226 |
| Citation Year: | 1995 |
| Type: | citation/reference |
| Text: | Identifying trends in sediment discharge from alterations in upstream land use; 1995; Article; Journal; Effects of scale on interpretation and management of sediment and water quality. Proc. symposium, Boulder, 1995; Parker, R. S.; Osterkamp, W. R. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DOCUMENT): | http://iahs.info/redbooks/a226/iahs_226_0207.pdf |
| Date Other: | Sun, 1 Jan 1995 00:00 -0600 |
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