Monday, 6 May 2013

Next lesson Examine the hydrological changes resulting from the construction of dams and reservoirs. Examine thecosts and benefits of dams and reservoirs as part of multi‑purpose schemes. Getting started click here for Diigo links and also see the Dams section of Isle. Check out the video bar as well for cool docos.

16 comments:

  1. I will be examining the interrelationship between the effects of building a dam/reservoir and the component parts of the hydrological cycle. The river is usually at dynamic equilibrium. If the components are changed, the open system will change it's equilibrium accordingly. The construction of a dam will not only affect the surface storage, it will affect the subsurface and atmospheric components of the hydrological cycle. I will be looking at the Aswan dam in egypt as an example.

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  2. This essay aims to examine the hydrological changes resulting from the construction of dams and reservoirs. To do this I will consider an argument or concept in a way that uncovers the assumptions and interrelationships of the issue. The interrelationships I will be discussing are the component parts of the hydrological cycle, the open system change equilibriums and the components are linked with atmosphere, surface, subsurface. The case study I will be using is the Aswan dam.

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    1. In this essay I will examine the hydrological changes resulting from the construction of dams and reservoirs by uncovering the assumption that the hydrological changes will only involve changes in the surface storage of rivers. I will uncover that the components of hydrological cycle are interlinked and changes to it will not only affect the surface storage but also the subsurface and atmosphere. This is because the river is usually in dynamic equilibrium and is an open system, but changes to these components change the equilibrium. This can be seen from the Aswan Dam in Egypt and how there are both costs and benefits to the construction of dams and reservoirs as part of multi-purpose schemes.

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    2. I think it's good so far but maybe you should add more vocabulary about the hydrological cycle

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  4. In this essay, I will examine the hydrological changes resulting from the construction of dams and reservoirs by interrelationship of the component parts of the hydrological cyclem such as surface storage and discharge. I will be moving away from the assumption that it is just the surface water that affects the the hydrological changes and will discuss how subsurface and atmosphere, as well as surface water, also affects the hydrological change. I will also discuss how the hydrological cycle is at dynamic equilibrium when it is a closed system and how open system changes the equilibrium. I will use the case study of Aswan Dam to further elaborate my point. Furthermore, I will examine the costs and benefits of dams and reservoirs as part of multi-purpose schemes

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  5. Great start, I would also talk about assumptions, I would also be very mindful about the hydrological cycle vocab. In my plan I would have a list of relevant words. Hydrographs, river regimes and lake weather systems would be things I would look at. Remember case study detail as well.

    Nice one dude.

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  6. This essay will consider the construction of dams and reservoirs in a way that uncovers the interrelationships and assumptions about the changes in the component parts of the hydrological cycle. The assumption is that dams and reservoirs will only affect the surface component of the hydrological cycle, when it actually affects subsurface and the atmosphere as well, because if the components are changed, the dynamic equilibrium of the cycle will shift. These are all interlinked and this essay will use the case study the Aswan Dam in Egypt as an example.

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  7. In this essay, I will attempt to examine the hydrological changes resulting from the construction of dams and reservoirs by looking at the interrelationships and assumptions surrounding the hydrological changes. Rivers hold a dynamic equilibrium, so when this dynamic is altered the equilibrium is off-balanced, making it an open system. I will look at the affects not only on the surface, but also the subsurface and atmosphere. The example I will be looking of the major effects of dams on the hydrological changes will be that of the Aswan High Dam, Egypt.

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  8. Within this essay I will examine the hydrological changes resulting from the construction of dams and reservoirs by considering an argument or concept in a way that uncovers the assumptions and interrelationships of the issue. To do so I will use the Aswan Dam to explore this idea. The Aswan Dam is an embankment dam situated across the Nile River in Aswan, Egypt. The dam became a key adjective for the Egyptian Government following the Egyptian Revolution of 1952, as the ability to control floods, provide water for irrigation and generate hydroelectricity were seen as pivotal to Egypt’s industrialisation. The Aswan Dam was constructed between 1960 and 1970, and significantly impacted Egypt’s economy and culture. In the essay I will examine the impacts both positive and negative, such as the loss of sediment, waterlogging, soil salinity and the water storage capacity. Not only will I examine this, but I will also examine the effects on surface, subsurface and atmospheric changes, and how slight changes in the environment will cause changes in the open dynamic equilibrium.

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  9. This essay will be examining the hydrological changes resulting from the construction of dams and reservoirs. I will be doing so by considering this argument in such a way that the interrelationships and assumptions are uncovered. The hydrological cycle exists in an equilibrium u consists of an open cycle which links with the atmosphere and the sub surface. I will be closely studying the Aswan Dam in Egypt, and its effects.

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  10. In this essay, I will examine the hydrological changes resulting from the construction of dams and reservoirs by interrelationship of the component parts of the hydrological cycle such as surface storage and charge. I am going to explain how the river is at dynamic equilibrium. However, the changes in the environment will impact on subsurface and atmosphere.

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    1. I will also be discussing about the Aswan Dam in Egypt and its effect

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  11. In this essay, we will explore the hydrological changes that are brought around due to the construction of dams and reservoirs. The purpose of dams and barrages are used to divert water, especially for irrigation, hydro-electric power, and reduction of downstream flow. By building another construction, this alternates the hydrological cycle as the hydrological cycle is in a dynamic equilibrium in an open system. It is assumed that the dams and reservoirs will not only change the surface discharge, but also inflict changes to the atmosphere water content and sub-surface discharge. We will also examine how each factors interlink with each other.

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  12. Great H I think you should state that often people assume the main effects are on surface storage, you are suggesting this is not the case and that all parts of the hydrological system will be effected.

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  13. Great I can see these introductions shaping up very well. Remember the hydrological cycle has stores, transfers, inputs and outputs. We did not really talk about these in the lesson but they are another good way to look at the hydrological cycle as a system. I think the assumption would be only the stores are affected by building dams. A few of you have touched on this.

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