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Results taken from 270 publications on rates are summarized, and collated with those from 149 publications reviewed previously (Young, 1969, 1974). The data are classified by major climatic zone, normal or steep relief, and consolidated or unconsolidated rocks. Representative rates and their ranges are given for soil creep, solifluction, surface wash, solution (chemical denudation), rock weathering, slope retreat, cliff (free face) retreat, marine cliff retreat, and denudation, the last being compared with representative rates of uplift. Solifluction is of the order of 10 times faster than soil creep, but both cause only very slow ground loss. Solution is an important cause of ground loss for siliceous rocks, on...
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Using Natural Resource Conservation Service (NRCS) soil databases, topographic features derived from digital elevation models, stream networks, and regional climatic patterns, I developed a ranking system for watershed potential erosion rates and suitability for check-dam placement across the SRLCC. This ranking system serves as a first step for land managers to prioritize areas for check-dam installation based on relatively static factors (soil properties, topography, and hydrology) that can contribute to rates of soil erosion by water and the stability of check-dams. Many other relatively dynamic factors over time can contribute to rates of soil erosion by water, such as recent wildfire events, changes in weather...
Cosmic-ray-produced 10Be and 26Al in riverborne quartz sediment are commonly used to estimate average catchment-scale erosion rates. Likewise, the concentrations of these nuclides in ancient sediments, stored in a depositional basin, carry a record of past erosion rates in the sediment source area. This is important because such a record could be compared to records of climate change or tectonic events to elucidate relationships between climate, tectonics and erosion. If the sediments are shielded from the cosmic-ray flux after deposition, for example in deep water, their nuclide concentrations need only be corrected for radioactive decay since deposition in order to determine past erosion rates. Where sediment...
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Synopsis: The effects of the 17,400 ha Cerro Grande fire patch in New Mexico on erosion and sedimentation processes were analyzed by this study, located in the Jemez Mountains upstream of the Los Alamos Reservoir, New Mexico. This study provides a unique data set demonstrating post-fire erosion rates relative to pre-fire conditions. The fire affected a large fraction of the watershed, with 32% of the basin experiencing a moderate to high severity burn, including some of the steepest mountainous portions of the basin. Average sediment deposition was 150 m3/year prior to the fire, equivalent to an average basin-wide denudation rate of 0.009 mm/year. The year after the fire, over 21,800 m3 of sediment accumulated in...
    map background search result map search result map A Five Year Record of Sedimentation in the Los Alamos Reservoir, New Mexico, Following the Cerro Grande Fire Watershed potential erosion rate ranking system and check-dam placement suitability data within the Southern Rockies Landscape Conservation Cooperative (SRLCC) A Five Year Record of Sedimentation in the Los Alamos Reservoir, New Mexico, Following the Cerro Grande Fire Watershed potential erosion rate ranking system and check-dam placement suitability data within the Southern Rockies Landscape Conservation Cooperative (SRLCC)