A waterfall is a feature of erosion found in the youth stage of a river. Waterfalls are found in areas with bands of hard and soft rock (otherwise known as resistant and less resistant rocks). The hard rock takes longer to erode than the soft rock (differential erosion) so the river erodes the land at different rates. The river erodes the soft rock by the main processes of erosion including Hydraulic Action (the force and power of the moving river) and Abrasion (the scraping of the load against
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The Ocean Ranger The Ocean Ranger was an offshore exploration oil drilling platform that sank in Canadian waters 315 kilometres southeast from St. John’s Newfoundland‚ on the Grand Banks of Newfoundland on February 15‚ 1982‚ with 84 crewmembers onboard. The Ocean Ranger was the largest semi-submersible‚ offshore exploration‚ oil drilling platform of the day. Built in 1976 by Japan’s Mitsubishi Heavy Industries‚ it operated off the coasts of Alaska‚ New Jersey‚ Ireland‚ and in November 1980 moved
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In the upper course of a river gradients are steep and river channels are narrow. Vertical erosion is greatest in the upper course of a river. As the result of this typical features include steep valley sides‚ interlocking spurs‚ rapids‚ gorges and waterfalls. When a river runs over alternating layers of hard and soft rock‚ rapids and waterfalls may form. Waterfalls commonly form where water rushes down steep hillsides in upland areas and quickly erodes the rocks. The height and number of waterfalls
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Everything on Earth cannot stay the same‚ except for the amount of mass on the planet. Even Earth itself changes. Throughout history‚ our planet’s land structures have changed drastically. Hills were formed and terrain was flattened. All of this was because of erosion. Erosion is the process of Earth being weathered down. The word “erosion” originates from the Latin word‚ “erosionem” which means “gnawing away.” Erosion is when forces of nature “gnaw away” at the Earth and cause the ground to move
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I am writing today to discuss the issue of coastal erosion and the proposed solution of beach nourishment. Coastal erosion has several causes‚ the most prominent being the breaking of waves against the coastline. While seemingly harmless‚ over time waves break away at the shoreline‚ leading to its reduction. Beaches are the one thing that protect coastal structures from such damage. They act as a line of defense for everything they surround‚ and are necessary for communities to thrive along the coast
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Human Impacts on those processes at Cronulla beach: What evidence do you see of human impact on erosion? Humans are also impacting erosion by: the many recreational activities along the beach (e.g. horse riding and four-wheel driving places on large dune areas.)‚ the rising population of Cronulla’s population and the doubled amount of people visiting the Cronulla Coast during the holidays. These factors place pressure upon the infrastructure and coastal environment‚ which can make large dune
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1) How old is the oldest oceanic crust (Atlantic‚ Pacific‚ and Indian)? Atlantic Ocean: The oldest part of the Atlantic Ocean is near the North American and African Coasts. They are approx 180 million years old. Pacific Ocean: The oldest oceanic crust in the Pacific Ocean is closest to Japan. It is approx 155-180 million years old. Indian Ocean: The oldest oceanic crust in the Indian Ocean is to the west of Australia. It is approx 140-160 years old. 2)
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bridge on the changes of river morphology are investigated by the field data as well as by numerical computations using a 2-D depth integrated water and sediment flow model. The Jamuna bridge was constructed on 1998‚ and reduced the river flood width from 14.00 km to 4.8 km. Data analyses suggest that rapid morphological changes in terms of sediment deposition and side bank erosion occur in the upstream reach of the bridge site after its construction. The results obtained from the numerical computations
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What are some of the Erosional and Depositional features found at Manchioneal? Table of Contents You should write this last in the order as seen in you syllabus. Aim To investigate and illustrate some of the erosional and depositional features in the
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A river changes as you move from the source to the mouth (downstream)‚ but also from bank to bank (across stream). In this essay I will be discussing how depth velocity and bedload size change downstream and across stream linking to past river theory (the Bradshaw method). Depth is defined as the distance between the surface of the river to the bottom (the river bed) this distance is measured in a straight vertical line. As you move from the source to the mouth the river depth increases. (which
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