Sea Level Rise
[2023-04-02 19:16:22]
It will not stop moving the sea. When you stroll along the beach, the waves roll and retreat, the tide is swelling. These are small everyday changes that balance over time
However, during the past century, the average altitude of the ocean is rising year by year - less than 1 cm, but these slight increases total. Today, the sea level is 5 to 8 inches (13 to 20 cm) higher than the average of 1900 years. This is a considerable change. For the past 2000 years, the sea level has not changed so much. Sea level rise rate also increases with time. Studies between 1900 and 1990 showed that sea level rose by an average of 2 mm to 7 mm per year. By 2000, this ratio has been increased to approximately 2 mm per year, and the ratio in 2016 was estimated at 4 mm per year. By the end of this century the sea level is expected to rise quickly
Scientists agree that climate change we are seeing today is primarily caused by human activities and climate change causes sea level rise. Shortly after we began burning coal, natural gas and other fossil fuels for energy, the sea level began to rise in the late nineteenth century. When burning, these high energy fuel sources will send carbon dioxide to the atmosphere. Carbon dioxide absorbs the heat of the sun, captures it, and warms the atmosphere and the earth.
As the earth warms, the sea level rises for two reasons. First, as the temperature rises, land ice such as glaciers and ice sheets melt, the water flowing into the sea melts and the sea level rises. Secondly, the warm water is relatively cold, expanding to occupy more space, increasing the amount of sea water.
Sea level rise will cause the most severe blow to the coast. If we can not control the amount of carbon dioxide in the atmosphere over the next several centuries today there will be 470-700 million coastal residents full of sea level rise today. And it leads to a temperature rise of 4 ° C. The majority of the population lives in cities. Sea level rise made the storm more dangerous, causing floods and damage in congested areas. It affects various parts of the world in various ways, and certain parts of the planet are particularly violent blows.
Sea level rise is closely related to rising temperature in the world. Despite the uncertainty that there is a possibility that the sea level will rise in this century, the rise of the sea level after this century brings increasing problems to coastal communities, infrastructure and ecosystem It is almost certain. (Permanent) flood increase, more frequent and extreme coastal floods, coastal landscape erosion, and saltwater infiltration into coastal rivers and aquifers. In order to evaluate the vulnerability of sea level rise, it is necessary to consider the physical cause, historical evidence, and forecast. Risk-based sea-level rise prospects suggest the need to emphasize how sea level changes change coastal areas and interact with coastal scale coastal flood risks.
Climate change brought about an increase in sea level rise across the country. The risk of sea level rise in the infrastructure of coastal water facilities depends on the rate of sea level rise relative to the height of a specific place. In the case of sea level rise, it will amplify the vulnerability to recent storm surges and increase the risk of long-term floods and floods. Sea level rise will extend the threat and range of storm surges in coastal areas. The water infrastructure, often located on the coast or affected by tides may be susceptible to greater changes in storm intensity. As the sea level rises and the storm increases, the threat of damage to floods and water infrastructure will continue to increase over time
The rise in the average sea level in the world is caused by the expansion of the sea water, melting the ice, mainly due to the rise in the temperature of the earth. However, sea level rise is not uniform, it varies from place to place. Sea level rise along the coast of California, Oregon, Washington