Chapter 15 – Restless Realm: Oceans and Coasts Key Point • Why does ocean water circulate? • How does the topography of the ocean floor change from a continental margin to the mid-ocean ridge? How are the oceans mapped? • How do ocean waves and breakers form? • How sediments are moved along a shore line and what coastal features are formed? • Be able to recognize both depositional and erosional coastal landforms Why should we study the oceans? • 70% of Earth’s
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discovered: In the BP Oil Spill‚ more than 200 million gallons of crude oil was pumped into the Gulf of Mexico for a total of 87 days‚ making it the biggest oil spill in U.S. history. 16‚000 total miles of coastline have been affected‚ including the coasts of Texas‚ Louisiana‚ Mississippi‚ Alabama‚ and Florida. Even though the gushing well was capped in July 2010‚ oil is still washing up on shores‚ which might cause long-term damages to people living in the area. The initial oil rig explosion killed
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What are geomorphic processes and how do they affect the coast at Hengistbury Head? Setting the scene Hengistbury Head is a scenic and historic headland near the town of Bournemouth on the south coast of England. It stands mid-way between Poole harbour and Hurst spit and forms the main division between Poole and Christchurch Bays. Coastal Processes | Description | Sub Aerial | Coastal erosional processes that are not linked to the action of the sea. Erosion occurs via rain‚ weathering
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is veritably "moved" from one stretch of beach to another. On rocky coasts‚ coastal erosion results in dramatic rock formations in areas where the coastline contains rock layers or fracture zones with different resistances to erosion. Softer rocky areas become eroded much faster than harder ones‚ and erosion on rocky coasts can literally take centuries of battering waves to make a noticeable impression. On sedimentary coasts‚ however‚ like the beaches of North Carolina‚ coastal erosion typically
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The US has many fabulous beaches that offer spectacular activities whether for the whole family‚ couples or even friends. The best beaches in United States are truly desirable from sun up to sun down. Dr. Stephen Leatherman‚ a professor for environmental studies and a known beach specialist‚ showcases the best of US beaches annually. The lush greens‚ pure sands and crystal waters make up the 10 proud beaches of America. Caladesi Island State Park Caladesi Island is found along the beautiful sandy
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alluvial processes (water) and climatic processes (weather). Hydrological Processes Hydrological Processes refer to water. Waves are continually affecting Otakimiro Point (i.e. the Headland). At Muriwai‚ waves are responsible for shaping the coast everyday (and night!). Hydrological Vocab * The movement of waves back down the beach. * The movement of waves up on to the beach. * These occur on shores with a steeply angled shore. The waves curl over and crash loudly. They are destructive
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a little coastal community like Ngunguru. Why this important well who wants to be stuck inside because there’s nothing to do‚ not me. So this shows that your not only living in a great place you’ll never be bored again. Ngunguru and the tutukaka coast one of the best diving and game fishing locations in new Zealand‚ ask any man that targets marlin or charters to the poor knights. Last season alone there were one hundred plus marlin weigh at the tutukaka game base. The poor knights only twenty two
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movement of sand. This changes drastically‚ when development puts up manmade barriers to protect homes and property‚ which changes the dynamic and distribution of the sand causing major erosion in different areas along the shoreline. Along the pacific coast‚ shoreline erosion is contributed to a narrowing of many beaches‚ due to the alteration of natural systems by people. The bulk of the sand on many of these beaches is supplied by rivers that transport it from the mountain regions. This process has
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Coastal Processes Coasts are shaped by the sea and the action of waves. Waves act in different ways‚ through the processes of erosion‚ transportation and deposition. Coasts: A coast is found where the land meets the sea. Coasts undergo change due to coastal processes and (as with rivers) there are main processes at work: Erosion Transportation Deposition Each of these processes involves the power of the sea and the effect of waves that are carried to shore. However other factors also
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deposited further inland‚ near the back of the beach. Another factor that may affect the development of depositional landforms is beach type. Drift-aligned beaches form when wave approach the coastline at an angle and sediment is transported along the coast by the action of longshore drift. When wave approach the shore‚ sediment is pushed up at an oblique angle by swash (this angle is determined by the prevailing winds) and removed back to the sea by backwash. Spits are formed when there is an abrupt
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