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According to the findings of Hjulström, a velocity of about 10 cm/second is required to maintain transport of grains with diameter of 2 mm. About 50 cm/second are required to start moving a settled grain of that size.
Note that these numbers are dependent on shape and density of the sediment. If styrofoam is your sediment the water doesn't have to flow at all to carry the grains and if you look at little gold nuggets the water has to flow significantly faster to carry the grains. This is one of the reasons why placer deposits form.
What else can I help you with?
Does fast moving water carry more or less sediment?
Fast moving water carries more sediment because it has more energy to erode and transport sediments from the surface of the earth. As water velocity increases, it can pick up and carry larger and heavier particles along with it.
Could a fast flowing river carry very little sediment?
Fast moving water can carry more sediment. Firstly because the potential of erosion rises with flow speed; secondly because larger grains can be transported by faster water and thirdly because the volume flow per unit time increases with flow speed. The actual amount / concentration of sediment transported by a stream is very dependent on the geology of the catchment, i.e. the amount of soft sediment available for erosion.
Does fast moving water carry less sediment than slow-moving water?
No, fast-moving water typically carries more sediment than slow-moving water because it has more energy to suspend and transport sediments. However, in very fast-flowing water, such as during a flood, sediment may be deposited when the water slows down.
In what ways does a river carry it's load?
Fast-moving water actually lifts sand and other, smaller sediment and carries it downstream. Water dissolves some sediment completely. Most large sediment falls to the bottom and moves by rolling and sliding.
What carries more sediments a fast moving or a slow moving water?
A fast-moving water carries more sediments because it has more energy to erode and transport particles. Slow-moving water has less energy and is typically not able to carry as much sediment.
Do fast moving rivers carry more smaller or larger particlees of sediment?
Fast moving rivers are capable of carrying larger rock particles than slow moving rivers.
If water is transport medium of sediment the grain size of sedimentary deposits most closley indicates the?
If water is the transport medium of sediment, the grain size of sedimentary deposits most closely indicates the energy of the transporting environment. Larger grains typically suggest higher energy conditions, such as fast-flowing rivers or turbulent waters, while smaller grains indicate lower energy settings, such as calm lakes or deep ocean floors. Additionally, the sorting of sediment grains can provide insights into the distance traveled and the dynamics of the transporting medium.
What factors affect a river's ability to erode and carry sediment?
Factors that affect a river's ability to erode and carry sediment include velocity of the water flow, volume of water, slope of the riverbed, geology of the surrounding area, and the presence of vegetation or obstructions along the river's path. High velocity and volume of water, steep slopes, soft rock formations, and minimal vegetation can increase erosion and sediment transport capacity.
Why do most rivers that have a large sedument load also have a fast flow of water?
Most rivers with a large sediment load also exhibit fast flow because swift currents are necessary to transport and suspend heavier particles. The increased velocity of the water provides the energy needed to overcome the gravitational pull on the sediment. Additionally, fast-flowing rivers often have steep gradients and turbulent flow conditions, which contribute to their ability to erode and carry sediment efficiently. This dynamic interplay between flow speed and sediment transport is crucial for shaping riverbanks and landscapes.
Which carries more sediment a fast moving river or a slow moving river?
Fast moving. sediment is heavy it settle out in slow water. But a river that just became slow after being fast looks like it has the most, because of all the settling going on.
Why can high gradient streams move large sediment particles?
High gradient streams have steeper slopes, which means they have more energy and power to transport larger sediment particles. The fast flowing water in high gradient streams can effectively carry and move these large particles due to the force of the water flow.
What is it called when a fast moving stream slows down and deposits sediment?
It is called deposition. It occurs as friction or gravity overcomes the force of the moving water.
