نتایج جستجو برای: riprap
تعداد نتایج: 109 فیلتر نتایج به سال:
Invasions by alien species may cause a decline in populations of vulnerable protected species through interference and resource competition. During the last decade, four invasive goby species of Ponto-Caspian origin have displayed rapid dispersal in The Netherlands. High densities of these species have been recorded in large rivers and hydrologically connected water bodies such as canals and fl...
Roadside mineral licks form when road salt used to de-ice highways in winter runs off surfaces and accumulates roadside ditches. Some ungulates are attracted these as they seek satisfy their requirements. Within the distribution of moose (Alces alces (Linnaeus, 1758)) North America, motorists often encounter visiting mid-summer, with many jurisdictions reporting summer peaks moose–vehicle colli...
Land use practices in Colorado during the last two centuries altered the supply of sediment and water to many channels in the upper South Platte Basin. As a result of increased supply of sediment and mobility and reduced peak flows, the characteristics of pools associated with channel constrictions, referred to as forced pools, may have been altered. Increased supply of sediment and reduced tra...
A common approach used to mitigate riverbank erosion and maintain watercourse alignments has been through the application of riprap or larger, more stable particles channel boundaries along reaches interest. However, very often, these large become dislodged from their intended locations (failed measures), becoming part bed material composition. In natural systems, immobile sediments boulders ca...
The Sabine–Neches Waterway (SNWW) is home to the largest commercial port of United States military and refineries that produce 60% nation’s jet fuel. deposited sediments from bank erosion due wake wash result in frequent dredging keep waterway operational. This study investigates vessel-generated waves their impacts on erosion. Surface wave data at Golden Pass City Port Arthur Park dock were me...
Living shoreline marshes are coastal wetlands constructed as alternatives to “hardened shorelines” (e.g., bulkheads, riprap) mitigate erosion and allow for landward migration of intertidal habitat sea level rises. shorelines designed mimic natural fringing over time should be sinks carbon other nutrients. We collected soil cores aboveground plant material from 13 pairs living different ages deg...
A few decades ago, river erosion protective approaches were widely implemented, such as straightening the course, enhancing riverbed/bank stability with layers of concrete or riprap, and increasing channel conveyance capacity (i.e., overwidening). However, recent research has established that practices can be tremendously costly adversely affect rivers’ ecological health. To alleviate these eff...
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