Discharge of sediment in channelized alluvial streams
Water Resources Bulletin
By: Andrew Simon
Links
- More information: Publisher Index Page (via DOI)
- Download citation as: RIS | Dublin Core
Abstract
Approximately 400 million cubic feet of channel sediments have been delivered to the Mississippi River from the Obion-Forked Deer River system in the last 20 years. The discharge of sediment from these channelized networks in West Tennessee varies systematically with the stage of channel evolution. Maximum bed-material discharges occur during the initial phases of degradation (Stage III). In contrast, yields of suspended-sediment peak during the threshold stage (Stage IV: large-scale mass wasting) as sediments are delivered from main-channel banks and tributary beds. Suspended-sediment yields then decrease as aggradation (Stage V) becomes the dominant trend in the main channels, but remains relatively high through restabilization (Stage VI) because of continued degradation and widening in the tributaries. Bed-material discharges decrease from the degradation stage (III) to Stage V, and increase again during restabilization (Stage VI) because secondary aggradation increases gradients and incipient meandering serves to rework bed sediments. Additional aspects of the subject are discussed.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Discharge of sediment in channelized alluvial streams |
| Series title | Water Resources Bulletin |
| DOI | 10.1111/j.1752-1688.1989.tb01330.x |
| Volume | 25 |
| Issue | 6 |
| Year Published | 1989 |
| Language | English |
| Publisher | American Water Resources Association |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Water Resources Bulletin |
| First page | 1177 |
| Last page | 1188 |
| Google Analytic Metrics | Metrics page |