The Current Rising of Sea Levels

Introduction Floods are defined as "water that normally covers dry land." 1 Although this is a natural process, it may be exacerbated by human activities 13 out of 20 gigantic cities are located on the coast 3 (Figure 1), because the population of coastal areas is dense, the world More than 600 million people live in less than 10 meters. 3 Common causes of floods do not fall into floods due to three main causes 2 Storm surges are larger waves than usual due to strong onshore wind, low pressure and tropical cyclone increases and other storms .

Current sea level rise rate is three times past past speed and seems to be accelerating. During the past century, the world sea level rose by 4 to 8 inches. The best estimate for scientists is that the sea surface will increase an additional 19 inch, possibly 37 inches by 2100. Destruction of ecosystems and rise in temperature may cause some ecosystems to disappear. As some species that can not be adapted die, the global temperature rise is expected to result in loss of species diversity. According to a recent survey, at least 279 animals and plants already respond to global warming.

It is unlikely that the sea level will rise due to the increase in carbon dioxide. For beginners, the level of sea level rise and fall is beyond people's imagination. The world's average sea level rise in the 20th century was about 15 cm (6 inches). The IPCC model currently predicts higher levels, but researchers have discovered that there is no relevance between carbon dioxide and sea level. The sea level rises linearly and the increase rate does not increase. So far, the increase is very close to natural factors, not human factors. By the end of the century the sea level is estimated to rise 5-20 cm

Sea level rise is not the same at any position on the earth, and the sea level drops in several places. Local factors include crustal deformation, ground subsidence, tides, tides and storms. Sea level rise is expected to last for hundreds of years. Due to the long response time of the climate system, we predict that the sea level rise will rise by about 2.3 meters (7.5 feet) per degree centigrade in the next 2,000 years.