A coral reef offshore is a significant source of sand particles. The shape of a beach depends on whether the waves are constructive or destructive, and whether the material is sand or shingle. Constructive waves move material up the beach while destructive waves move the material down the beach. On sandy beaches, the backwash of the waves removes material forming a gently sloping beach. On shingle beaches the swash is dissipated because the
Dunes are formed when sand creeps up the windward side and falls down the leeward side. Deflation is another type
Lava deltas are created when pahoehoe goes into the ocean and stays there for a long time. Lava deltas are fan shaped pieces of land that form in the ocean. When the lava flows into the ocean, it cools really quickly and breaks into pieces, which can be sand sized or block sized. The different pieces collect on a slope underwater and build the base of a structure that in time can hold up the lava flows that form the delta above the water. When the pieces of lava collect on a steep slope, then the side of the delta crumbles often and creates a bunch of submarine landslides.
Ambereen Alvi Geo 102 Extra Credit Ocean Currents Ocean Currents: How They are Made and Work What is an Ocean Current? And what does it have to do with you? Ocean curents are the continuos, direct movement of ocean water generated by forces upon the ocean. This can depend on things we can experience directly like wind, temperature, and water density, and also those things a little less obvious like the rotation and mass of our earth. Together these things work to create ocean currents that help in the overall vitality on our earth dynamic surface.
This is the wave motion that is so damaging to structures. The third general type of earthquake wave is called a surface wave, reason being is that its motion is restricted to near the ground surface. Such waves correspond to ripples of water that travel across a lake. Surface waves in earthquakes can be divided into two types. The first is called a Love wave.
Currents are the ocean’s constant flow of water that is pushed on by either the wind or from tides that are caused by the moon’s gravitational field. Currents can occur along coasts, and sometimes only affect small areas. A longshore current is caused when waves strike the beach at an angle. The front part of the wave hits the shallow water first and slow down. Rip currents are a dangerous effect of longshore currents.
Solar radiation has been suspected to play a role in coral bleaching. The consequent exposure to high or low temperatures, increased solar radiation, desiccation, and sea water dilution by heavy rains could all play a role in zooxanthellae loss, but could also very well lead to coral death. -Fresh water dilution Rapid dilution of reef waters from storm-generated precipitation and runoff has been demonstrated to cause coral reef bleaching. Generally, such bleaching events are rare and confined to small, near-shore areas. Nearly all of the world’s major coral reef regions (Caribbean/western Atlantic, eastern Pacific, central and western Pacific, Indian Ocean, Arabian Gulf, Red Sea) experienced some degree fo coral bleaching and mortality during the 1980s.
Not only does this leads to erosion but, when sand dunes occur this can cause health risk to the lives of citizens living in a particular area. In areas such as China which is rapidly turning into a desert has the most critical effect on this country. Critics want to plant trees to help offset set this horrible situation but this will not be a solution to the problem. As people continue to build homes and eliminate trees this might become an issue across the globe as global warming is on the rise. Erosion is powerful among desert and glacial areas.
The persona asks himself why a wall is need between properties and people => boundary. • The force of nature is shown as the wall is dismantled, which means that nature is against the wall itself. “Spills the upper boulders in the sun” => another reference to nature. • The holes in the wall are important: “gaps even two can pass abreast”. • The disorder in lines and in the syntax => condition of the wall => dismantled.
The sea animal cannot adjust to these changes in the ocean due to global warming. Pollution is another big problem that is threatening our ocean. The ocean has become a dumping ground. These toxins are affecting the ocean in a harmful way. This is also hurting sea life.