Free «A Rise in Sea Level» Essay Sample

The ever-rising sea levels have generated considerable researches on the major causes of the sea rise. The scientists have come up with different explanations regarding this phenomenon. Sea level has been rising each year by approximately 3.5 millimeters with an estimated 5 meters erosion of the existing beach areas (Douglas et al., 2001). The rising sea-levels have generated a great concern over the occurrence of extremely intense storms, mainly at the tropics. The rising sea levels threaten to aggravate the impacts of rising sea that expose the main land to extreme floods and other associated risks. Therefore, the sea rise effects ought to be reviewed with reference to the local effects rather than the overall global changes. The present sea-level changes account for the global, regional or domestic factors in order to offer an all-inclusive answer to the lingering question on the causes of the sea-level rise. The available elucidation lies under the climate changes that have led to the melting of polar ice, the thermal augmentation of the ocean waters together with the transforming sea dynamics and uplift or subsidence processes that relate to the tectonics and glacial isostatic modifications (Church et al., 2010). However, other contributory factors include the flow of the atmosphere together with the ocean and the source of melt water.

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Climate change has significantly contributed to the rising sea level, considering its role in the melting of the glacier ice at the poles. Over time, ice has reduced due to the melting driven by the rising temperatures associated with the climate changes. The pole temperatures have risen with time instigating the melting of glacier. This is the factor that increased the amount of underground water and the subsequent water at the oceans. Melting of the glacier is evident by the emergence of the ice-free region that has facilitated shipping through the Northwest Passage down to Canada, Greenland and Alaska (Douglas et al., 2001).

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The thermal and overall expansions of the surface under the ocean have led to the rising water levels. Increases in the temperature of the ocean water have instigated the rising of the sea level. In addition, the regions with a high surface temperature are greatly affected. The sea levels at the poles have significantly risen, indicating that the rising temperatures at the ocean together with those at the surface contribute to increase in the quantity of water in these water bodies. 

The case of subsidence and land uplift has been reflected on as another contributing factor towards the sea-level rise. British Isles is one of the regions affected by this phenomenon after an adequate observation of the region since Ice era. While other regions continue to exhibit the sinking effect, other regions undergo a similar but antagonistic effect. Studies reveal land rise with approximately 10 cm, which offsets the sea level. In response, the subsidence has led to the rising of the sea levels at various regions globally, thus demonstrating the influence of these phenomena on the sea level. Estimates are that 5 cm sinking of the land will generate approximately 10- 33 cm rise at the sea level (Douglas et al., 2001).

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The sea-level rise has considerable impacts on the different ecological systems, including the world population. The anticipated impacts associated with the sea-level rise include flooding. It may be caused by the submergence of the land surface, ecological changes, increasing height of the water tables, and erosion of the land surfaces, mainly the beaches. Coastal lands are susceptible to the submergence and flooding due to the rising waters. This will affect the surface water composition, because the saline ocean waters will intrude into the surface waters causing contamination. Further, this will affect the biological existence of the different living components. Rising levels of the ocean water will also lead to the creation of the novel environmental conditions with every organism trying to survive in its immediate surrounding (Church et al., 2010). Erosion of the beach land will have the profound effects on the economy with elimination of the beach business undertakings, including tourism. Erosion of these areas has also social implications, mainly among the individuals who reside along these regions.

The sea-level rise has threatened the existence of the various islands, mainly at the equatorial region. The waters have already eliminated several uninhabited islands present at the Central Pacific region. In Samoa, the majority of the residing groups have relocated to the elevated grounds, following the rise in the sea levels. Elsewhere, Tuvalu islanders cannot find drinkable groundwater due to the intrusion of their fresh water sources by the saline ocean water. Several regions in the tropics and subtropics have received threats on the local plants together with a wildlife populace, while coastal mangroves are being submerged, reducing the barriers to the storms and tidal waves (Church et al., 2010). 

Climate change management may greatly influence the sea level. Moreover, lessening of the greenhouse emissions may assist in preventing a significant rise in the surface temperatures. This way, the shrinkage of glaciers and overall melting may ease up and prevent additional sea-level rise. What is more, climate change might assist in the management of the current global temperatures, which may start dropping in the long run.

Different phenomena associated with the sea-level rise seem to contribute equally, although the matter of climate change and shrinking of the ice glaciers seems to have a great contribution towards the same issue. However, the temperature adjustments cannot be anticipated to stabilize without some of the consequences taking place. Therefore, the global population ought to be aware of the pending dangers associated with the sea-level rise. The strategies applied in the management of this phenomenon are the determinant factors on the future of the global population and existence of the marine life or ecosystems. 

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