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Results 1 - 10
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208
Johannessen: Soft Shore Protection as an Alternative to Bulkheads Soft Shore Protection as an Alternative to Bulkheads— Projects And Monitoring
"... Traditional “hard ” bulkheading has been the norm at Puget Sound and Northwest Straits shores until very recently, when “soft shore protection ” alternatives have been encouraged by regulators and well-informed citizens. Soft shore protection locally entails the use of indigenous materials such as g ..."
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beach on Blakely Island in San Juan County was restored in early 1998 and the backshore area was extensively replanted. An 850 ft long enhanced beach that included a wide gravel berm and a replenished sandy backshore was constructed at a severely degraded Samish Island beach in 1997. Monitoring results
Large-scale natural gradient tracer test in sand and gravel
- Cape Cod, Massachusetts
"... A large-scale natural gradient tracer experiment was conducted onCape Cod, Massachusetts, to examine the transport and dispersion f solutes ina sand and gravel aquifer. The nonreactive tracer, bromide, and the reactive tracers, lithium and molybdate, were injected as a pulse in July 1985 and monitor ..."
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Cited by 73 (2 self)
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A large-scale natural gradient tracer experiment was conducted onCape Cod, Massachusetts, to examine the transport and dispersion f solutes ina sand and gravel aquifer. The nonreactive tracer, bromide, and the reactive tracers, lithium and molybdate, were injected as a pulse in July 1985
A systematic analysis of eight decades of incipient motion studies, with special reference to gravel-bedded rivers. Water Resources Research 33:1993–2029
, 1997
"... Data compiled from eight decades of incipient motion studies were used to calculate dimensionless critical shear stress values of the median grain size, �* c50 Calculated �* c50 values were stratified by initial motion definition, median grain size type (surface, subsurface, or laboratory mixture), ..."
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Cited by 89 (10 self)
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of grain motion define subparallel Shields curves, with the latter generally underlying the former; values derived from competence functions define a separate but poorly developed field, while theoretical values predict a wide range of generally higher stresses that likely represent instantaneous, rather
HETEROGENEITY OF INFILTRATION RATES IN ALLUVIAL FLOODPLAINS AS MEASURED WITH A BERM INFILTRATION TECHNIQUE
"... ABSTRACT. Hydrologic heterogeneities (e.g., macropores and gravel outcrops) in floodplains are hypothesized to play an integral role in impacting flow and leaching between the soil surface and shallow alluvial aquifers, which are intricately connected to streams. Infiltration is often assumed to be ..."
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ABSTRACT. Hydrologic heterogeneities (e.g., macropores and gravel outcrops) in floodplains are hypothesized to play an integral role in impacting flow and leaching between the soil surface and shallow alluvial aquifers, which are intricately connected to streams. Infiltration is often assumed
Fluvial Characteristics of the Diamondiferous Droogeveldt Gravels,
"... The Late Cretaceous toearly Tertiary Droogeveldt gravels, one of the more famous alluvial diamond ig-gings in the Vaal basin of South Africa for both grade and large stone size, were totally exploited inthe earlier part of this century. The best recoveries were obtained from high elevation (1,100- t ..."
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,100- to 1,130-m elev) bimodal gravels ituated in narrow (2- to 20-m wide), straight-sided, bedrock depressions <1 km long, some 5 to 10 km from the current Vaal River (1,000-m elev). These gravels, forming afining-upward profile, comprise cobble to pebble, silica-rich clasts characteristic of the current
Morphodynamics, Sedimentation and Sediment Dynamics of a Gravel Beach.
"... D50 2- 8mm), was studied with reference to its sedimentology. Three time scales were sampled for nearshore hydrodynamics, intertidal morphologies and sedimentologies. A series of surveys were carried out over individual tidal cycles (sampling every 5- 10mins for between 6 and 9hrs); on consecutive l ..."
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the collection and analysis of high-resolution sediment data. The gravel beach step and berm are accretionary features, tidally modulated, and evolve under different time scales. A new technique to determine bed mobility from the nearshore, using underwater video cameras, was devised. Nearshore sediment
Crowe (2001), Experimental study of the transport of mixed sand and gravel
- Water Resour. Res
"... Abstract. We measured a wide range of transport rates for five different sand/gravel mixtures in a laboratory flume. Each mixture used the same gravel, and sand was added to produce mixtures containing 6, 15, 21, 27, and 34 % sand. Control of other variables allows us to isolate the effect of bed sa ..."
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Cited by 26 (5 self)
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Abstract. We measured a wide range of transport rates for five different sand/gravel mixtures in a laboratory flume. Each mixture used the same gravel, and sand was added to produce mixtures containing 6, 15, 21, 27, and 34 % sand. Control of other variables allows us to isolate the effect of bed
Forest Restoration and Reclamation of Gravel Pits in Canada
"... The glacial and geologic history of North America has resulted in numerous deposits of clean gravel near the soil surface throughout Canada, particularly in the area known as the Canadian Shield (Zavitz 1961). Gravel is a widely used and highly sought after material making its extraction economicall ..."
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The glacial and geologic history of North America has resulted in numerous deposits of clean gravel near the soil surface throughout Canada, particularly in the area known as the Canadian Shield (Zavitz 1961). Gravel is a widely used and highly sought after material making its extraction
FIELD OBSERVATIONS OF STEP DYNAMICS ON A MACROTIDAL GRAVEL BEACH
"... Abstract: A data set consisting of detailed measurements of the hydrodynamics, morphological and sedimentological change, and sediment transport, has been collected from the region of the beach step on a macrotidal gravel beach. The step is an accretionary feature which evolves with a different r ..."
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Abstract: A data set consisting of detailed measurements of the hydrodynamics, morphological and sedimentological change, and sediment transport, has been collected from the region of the beach step on a macrotidal gravel beach. The step is an accretionary feature which evolves with a different
Sediment Transport in the Restoration of Gravel-bed Rivers
"... A successful stream restoration design must be able to transport the sediment supplied to it with the available flow. Although this guidance is widely cited, only water supply is routinely incorporated in a consistent manner in restoration design. A number of factors can alter both the caliber and r ..."
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Cited by 3 (1 self)
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A successful stream restoration design must be able to transport the sediment supplied to it with the available flow. Although this guidance is widely cited, only water supply is routinely incorporated in a consistent manner in restoration design. A number of factors can alter both the caliber
Results 1 - 10
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208
