Xem 1-19 trên 19 kết quả Inland waters
  • The naval operations described in the following pages extended, on the seaboard, over the Gulf of Mexico from Key West to the mouth of the Rio Grande; and inland over the course of the Mississippi, and its affluents, from Cairo, at the southern extremity of the State of Illinois, to the mouths of the river. Key West is one of the low coral islands, or keys, which stretch out, in a southwesterly direction, into the Gulf from the southern extremity of the Florida peninsula. It has a good harbor, and was used during, as since, the war as a naval station. From Key West to...

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  • Human activities may seriously affect the quality of aquatic ecosystems. Pathogen organisms, nutrients, heavy metals, toxic elements, pesticides, pharmaceuticals and various other organic micropollutants enter to aquatic environment through a range of point and diffuse sources. The presence of these compounds has adverse impacts on aquatic biota. It is well recognised that the distribution and the abundance of various species in aquatic systems are directly related to the water quality and hydrological conditions....

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  • Water-resource managers have long strived to meet their goals of system reliability and environmental protection in the face of many uncertainties, including demographic and economic forecasts, intrinsic weather variability, and short-term climate change induced by El Ni

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  • Transportation is made ​​of material production and transportation of goods. Transportation is divided into road transport (often referred to as the transport), water transport (shipping), air transport. Road transport including trains, cars and roads. Water transport, including maritime transport and inland waterway transport. Use of air transport aircraft

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  • This Section of Part 2 of BS 6100 has been prepared under the direction of the Basic Data and Performance Criteria for Civil Engineering and Building Structures Standards Policy Committee. A general introduction to and explanation of this glossary is given in Part 0 of BS 6100, which itemizes the Parts, Sections and Subsections into which this glossary is divided and provides a general alphabetical index of all the terms in the Sections and Subsections already published.

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  • These research teams study for example the impact and mechanisms of greenhouse gas emissions and atmospheric pollutant on climate, ozone depletion and carbon sinks (oceans and inland waters, forests and soil). They do research to understand the mechanisms and assess the impact of global change on the water cycle, water quality and availability, as well as soil functions and quality to provide the bases for management tools for sustainable water systems. Biodiversity and ecosystems are analysed to understand and minimise the negative impacts of human activities.

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  • The EU Water Framework Directive (2000/60/EC) is probably the most significant legislative instrument in the water field that was introduced on an international basis for many years. It moves towards integrated environmental management with key objectives to prevent any further deterioration of water bodies, and protect and enhance the status of aquatic ecosystems and associated wetlands. It aims to promote sustainable water consumption and will contribute to mitigating the effects of floods and droughts.

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  • There rules shall apply to all vessels upon the high seas and in all waters connected there with navigable by seagoing vessels.Nothing in there rules shall interfere with the operation of special rules made by an appropriate authority for roadsteads, harbors, river, lakes or inland water connected with the high seas navigable

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  • It has often been stated that no two well-designed sewerage schemes are alike, and although this truism is usually applied to inland towns, it applies with far greater force to schemes for coastal towns and towns situated on the banks of our large rivers where the sewage is discharged into tidal waters. The essence of good designing is that every detail shall be carefully thought out with a view to meeting the special conditions of the case to the best advantage, and at the least possible expense, so that the maximum efficiency is combined with the minimum cost. It will...

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  • A classic example of a water system severely affected by hu- man development is the Aral Sea, fed by the Amu Darya and Syr Darya. The Aral Sea was once the fourth largest inland body of water in the world, after Lake Superior, supporting 24 unique species of fish and a large fishing population. The Soviet Union built a series of dams and irrigation systems to divert river flows in order to grow cotton on around 3 million hectares of new farmland, but these massive freshwater withdrawals (first order impacts) led to the shrinking of the Sea and a corresponding increase in...

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  • The Mekong River Delta in Vietnam can be considered as a large tropical wetland, in which two typical eco-forest wetlands can be distinguished: the inland Melaleuca forest wetlands and the coastal mangrove forest wetlands. Their main functions are the provision of forest commodities, the regulation of the water balance and biodiversity conservation. However as elsewhere under human pressure their existence is under the threat of forest fires and deforestation. Their protection requires the implementation of a multi-level national or sub-national planning policy.

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  • The search for oil occurs in geological sediments, as opposed to volcanic rocks. Several processes are involved in the creation of sediments. First, the inland continental volcanic rock is continuously being weakened and eroded by weathering processes (mechanical (through water, ice and wind) and chemical erosion). Secondly and simultaneously, the eroded material is being transported by water, ice and wind and gradually the material may be broken down into smaller pieces (from boulders to gravel, to sand, to silt and finally to clay).

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  • small water bodies like ponds now contributes 80% of the country’s inland fish production. However, future growth in freshwater aquaculture to meet rising demand for fish is likely to be constrained by limited supplies of land for digging new ponds and of water to fill them. In this context, reservoirs offer immense scope for increasing fish production.

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  • Appropriate water management control the level of thought, especially water birds on the marsh and inland lakes, to be effective in reducing stranding damage (Eddy Underhill 1974). Thus, accessible marsh habitat is very important. reproduction of these species. Maintain, protect and restore the integrity and connectivity of the Lake Huron basin (Including St.Marys River) wetlands will ensure that important spawning, nursery and feeding habitat available for esocids, centrarchids, percids, ictalurids, and a variety of prey fish....

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  • Climate change can also be expected to have serious consequences on water resources. Melting glaciers, higher intensity and more variable rainfall events, and increasing temperatures will contribute to increased inland flooding, water scarcity and decreasing water quality. Overall, the greatest human requirement for freshwater resources is for crop irrigation, particularly for farming in arid regions and in the great paddy fields of Asia.

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  • The world’s major food items, core requirements for human health, come from wetland ecosystems. Rice, a staple food item for almost half the world’s popu- lation, is grown in a wide range of environments, mostly wetland ecosystems. Rice receives 35–45% of the world’s irrigation water and some 24–30% of developed freshwater resources.

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  • The story of American ships and sailors is an epic of blue water which seems singularly remote, almost unreal, to the later generations. A people with a native genius for seafaring won and held a brilliant supremacy through two centuries and then forsook this heritage of theirs. The period of achievement was no more extraordinary than was its swift declension. A maritime race whose topsails flecked every ocean, whose captains courageous from father to son had fought with pike and cannonade to defend the freedom of the seas, turned inland to seek a different destiny and took no more...

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  • Canada is the child of the sea. Her infancy was cradled by her waterways; and the life-blood of her youth was drawn from oceans, lakes, and rivers. No other land of equal area has ever been so intimately bound up with the changing fortunes of all its different waters, coast and inland, salt and fresh. The St Lawrence basin by itself is a thing to marvel at, for its mere stupendous size alone. Its mouth and estuary are both so vast that their salt waters far exceed those of all other river systems put together. Its tide runs farther in from the Atlantic than any...

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  • Leave Port Essington. Clarence Strait. Hope Inlet. Shoal Bay. Land for Observations. Explore a new Opening. Talc Head. Port Darwin. Continue Exploration. Mosquitoes and Sandflies. Nature of the Country. Its parched appearance. Large ant's nest. Return to Shoal Bay. Visit from the Natives. Remarks. Their teeth perfect. Rite of Circumcision. Observations on the Migrations of the Natives. Theory of an Inland Sea. Central Desert. Salt water drunk by Natives. Modes of procuring water. Survey the harbour. Natives on a raft. Anecdote. Bynoe Harbour. Well. Brilliant Meteors. Natives on Point Emery.

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