They may be initiated when a drill hole penetrates a confined, high-pressure aquifer. Despite efforts to contain the resulting flows, such drill holes sometimes flow out of control or they may even "blow" out with considerable force (similar blowouts can happen when oil or gas wells are drilled, and zones of high-pressure fluids - liquids or gases - are encountered). The flows may continue for several months, or even years, resulting in considerable amounts of water and washed material being carried upward to the surface of the ground. References Bluemle, J. P., and Clayton, L., 1984, Large-scale glacial thrusting and related processes in North Dakota: Boreas 13, 279 - 299 p. Bluemle, J. P., 1993, Hydrodynamic blowouts in North Dakota: in Aber, J. S. (ed), Glaciotectonic and Mapping Glacial Deposits: Proceedings of the INQUA Commission on Formation and
Describe how, and explain why, channel characteristics change downstream. (15 marks) Channel characteristics are changed when the river flows downstream by many factors such as cross-profile of a river, wetted perimeter, erosion, hydraulic radius, roughness and efficiency. Channel characteristics change as the river flows from upstream to downstream. In the upper course the river tends to be more narrower, steep and uneven due to the deposition of large boulders it also has a larger wetted perimeter. 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.
Bobby Kmetz Oct 21, 2010 Research Report #1Topic In the world today there are many things that are affecting are environment and a lot of those things have to do with effecting the land and soil around us that we use every day to grow plants on and use to raise livestock on. With all the damaging things that are happening to the worlds soil that we all know of such as erosion and irrigation of lands one type of soil degradation that is just as serious as all the others is overgrazing. Overgrazing can degrade soil because of the way it is treated by the animals and not maintained by the land owners. In the book Essential environments it briefly talks about what different activities have effect on the soils. It talks about how even though
Acid Rain in North America is a very serious issue which needs to be addressed. It affects the environment in many different ways affecting, lakes, trees, animal, and other living things. If people are willing to help, the chances of disaster will be decrease, but if actions do not take place, then the acid rain will cause a lot of damages to the environment. Wet deposition is a form of acid deposition which includes fog or snow. In this process acidic water flows over and through the ground and affects varieties of plants and animals.
Soil type is one factor that influences erosion. Some soil types are more prone to erosion than others. Based on the data you gathered in this experiment, which soil types do you think are the most easily eroded, soils with a high sand content or soils with a high clay content? Explain your
| Soil Erosion | Tree major practices | Rosa Flores 2/18/2013 | Three major practices that expose soil to erosion and how they can be corrected. Soil erosion is the loss of soil caused by particles being carried away by wind or water. Erosion moves the smaller particles first and hence degrade the soil to a coarser, sandier, stonier texture. The major causes of soil erosion are over-cultivation, overgrazing, and deforestation. They are creating problems to create a more sustainable society but it can be corrected.
This isolation may be due to human practices or natural occurrences which drive aggradation or in‐stream incision. When high flows occur under these physical conditions, the stream or river has a restricted area to flow and higher flow velocities and energies are produced. Ideally, during high flows the river system would be able to over top its banks and spread over a large flat area surrounding the river, the floodplain (Figure 1). Floodplain reconnection reestablishes the connection between the stream system and its floodplain. This is accomplished through lowering or setting back natural or constructed levees currently blocking the flow of water out of the main channel.
Weathering also plays an important role in the climate of this area. It changes because of two kinds of weathering- physical and chemical. Physical weathering happens when large masses of rock are physically broken down into smaller pieces, whereas for chemical weathering, it changes the chemical makeup of rocks. These two factors transform the combing of what occurs in the area. Much of the world has
People excrete wastes and litter that flow into water systems, and animal habitats, this is slowly polluting water and killing wildlife. And the more the population grows the more wasted were going to produce and cause pollution and damage to the environment. More housing and buildings being built means that were building over were habitats live, the loss of these forests leads to extinction of plants and animals. Also more people means that more goods (like clothes, TVs etc) are wanted, more jobs are needed so more factories are being built witch is affecting out air pollution, which eventually is destroying out atmosphere. Also more food is required so more intensive farming methods are used.
This means that there is a call for more farmland and cattle fields, resulting in the loss of more forests. Anytime there is a need for more land, trees will be cut down to make room. Businesses that want to expand and create new buildings are another reason deforestation is being overlooked. All of these causes of deforestation affect the environment greatly. With so many trees being cut down for the growing population, many different types of species that live in the forests are being killed or forced to move from their homes.