Estimating Bulk Density in Vertically Exposed Stoney Alluvium Using a Modified Excavation Method
| Autor: | Kristofor R. Brye, David M. Miller, S. J. Formica, M. A. Van Eps, T. L. Morris |
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| Rok vydání: | 2004 |
| Předmět: |
Hydrology
Conservation of Natural Resources Geologic Sediments Geological Phenomena Environmental Engineering Sediment Geology Management Monitoring Policy and Law Pollution Bulk density Turbidite Soil Rivers Soil water Water Movements Erosion Environmental science Alluvium Turbidity Waste Management and Disposal Environmental Monitoring Water Science and Technology Stream capacity |
| Zdroj: | Journal of Environmental Quality. 33:1937-1942 |
| ISSN: | 0047-2425 |
| DOI: | 10.2134/jeq2004.1937 |
| Popis: | Despite many decades of education and refining land-use practices, accelerated stream bank erosion is still prevalent in the United States. Eroding stream banks produce a sediment load to the riverine system and can cause reduced water quality as a result of increased suspended sediment. As total maximum daily loads (TMDLs) for water bodies impaired by turbidity or suspended sediments become more numerous, a simple, in situ field technique will be needed to estimate the bulk density of readily erodible stream bank material so that reasonably accurate sediment loading rates can be estimated. In this study, the excavation/polyurethane-foam technique for estimating total bulk density was applied to vertically exposed alluvium with high coarse-fragment content. Though not previously attempted in vertically exposed alluvium with high coarse-fragment content, the excavation/polyurethane-foam technique appears to provide a reasonably accurate estimate of the total and soil (2-mm size fraction) bulk density from vertically exposed, alluvial deposits with high coarse-fragment content (i.e.,70%) along eroding stream banks. Obtaining bulk density estimates using this method would facilitate calculation of sediment loading rates to riverine systems with actual field data. |
| Databáze: | OpenAIRE |
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