In warmer periods there is less ice and the water is warmer, so expands and sea levels rise. In colder periods the ocean water is colder so contracts and sea levels fall. There are also other land changes that occur, such as knick points, river terraces and incised meanders. Knick points are the part of the river/channel where there is a sharp change in channel slope, such as a waterfall. Knick points reflect different conditions and processes on the river often caused by previous erosion.
Three effects that urbanization including flood control efforts has on flooding are water being forced into smaller channels that creates floods, the ground is also less porous and less permeable than rural land, which forces the water to run off instead of filtering into the ground, and natural buffers are destroyed that all lead to flooding. Urban flood controls that attempt to lessen floods are artificial levees, dams, and altering of a stream channel. Causes and the types of floods are regional floods-seasonal during rapid melting of snow or heavy rains. Another is flash floods that influences rainfall intensity and duration, surface conditions, and topography, ice jam floods that is stream rising that breaks up the ice and creates ice flows that can pile up and suddenly give away causing a flash flood. The last is dam failure floods, which is when a dam gives way.
Throughout and after an ice age, eustatic change takes place. At the start of an ice age, the temperature falls and water is frozen and stored in glaciers inland, suspending the hydrological cycle. This results in water being taken out of the sea but not being put back in leading to an overall fall in sea level. Conversely, as an ice age ends, the temperature begins to rise and so the water stored in the glaciers will renter the hydrological cycle and the sea will be replenished, increasing the sea levels. Increases in temperature outside of an ice age will also affect the sea level
The bank of the river channel becomes worn away as a result of vertical erosion, due to the processes of hydraulic action which is the forces of flowing water against the river bed and banks caused by the volume of flowing water compared to kinetic energy and attrition which is the material being carried in the river colliding which then breaks the loads down into smaller pieces. Also the velocity of the water in its upper course of the river is slower as more energy is needed in overcoming friction on the uneven channel. however as the river travels more downstream less vertical and more lateral erosion begins to take place, the process of erosion which takes place her is attrition which is the carrying an breaking of the load and also abrasion which is when the material collides and wears away the bed rock, resulting the the river channel becoming more smoother, an also during the mid course you are more likely to come across flood plains. The channel characteristics also change when going downstream as the roughness decreases meaning that features such as potholes cannot be formed as the bed load is too small due to erosion wearing it away and breaking it down in to more smaller and rounder particles. Also as result of traveling downstream the mid-course and lower course tend to be more efficient and also has a smaller wetted perimeter.
This was significant because they were able to manufacture by products of the iron ore and export them in exchange for money or other goods. Some of these by products included plows, tools, kettles, nails, and large blocks of iron which they also exported to England. Because the Middle Colonies had such a wealth of resources, it was an ideal place for colonists to live. In addition to the resources and the production of mills, the Middle Colonies also had prospering cities. Along the coast of the Middle Colonies were excellent harbors, which were supreme sites for cities.
The data in table 1 shows that there were more species found in the samples taken from Fort Wetherill. With Providence River being known as a primary producer it would be assumed that there would be more abundant species. Because there are a variety of nutrients available in the Providence River, more species would be able to develop and survive. Although the variety of species did not follow the predicted hypothesis, there is a trend seen when examining figures three and four. When looking at the three most abundant species found in both locations, there are significantly fewer Polychaete Larvae and Unidentified Copepod found at Fort Wetherill.
This is accomplished through lowering or setting back natural or constructed levees currently blocking the flow of water out of the main channel. Doing so increases the cross sectional area wetted perimeter of flow, thus reducing velocity and momentum (Rakovan and Renwick,
It is debatable of if it was the first. The Indus Valley was well known for their highly sophisticated wells and water storage systems in the ancient world. They also developed a system of weights and trade, wonderful types of pottery and jewelry. Traders would use The Indus River to do their trading because boat by river was an easy way to travel with a large amount of goods. By In the Indus River Valley, the largest cities of the area were located directly next to the Indus River (Martin).
By it being so close, they had easy access and took advantage of their opportunity. On the other hand, Mesopotamia had a great source of water as well. They were surrounded by two rivers called the Tigris and Euphrates. They both were next to a source of water which complemented them with fertile land and
Naturally, the lager the drainage basin the longer the way the water needs to cover the longer the taken time to reach the measuring location. This also means the lager the drainage basin the longer the lag time which can be referred to hydrograph B. Hydrograph A represents more likely a small drainage basin where the water only has to travel a short distance. The shape of a