Apr 26, 2019 08:00:00

Cities in the Gulf region have to counteract the rising sea level caused by global warming

As global warming progresses, polar ice melts and is considered to cause sea level rise. There are many cities along the coast, but as the sea level rises, it is expected that damage to the coastal area will increase due to heavy rain etc., and cities such as New York are promoting projects to prepare for sea level rise. That's right.

This is what sea level rise will do to coastal cities


There are many Gulf cities in the world. New York or ...

Venice

One of the world's leading cities, such as Alexandria , is located along the Gulf Coast.

As of 2019, the coastline of these cities is clearly separated from the cities ...

“Imagine what a coastline would be in 100 years,” says Science editor Mary Beth Griggs.

The sea level rise due to the earth's rise is considered to have progressed considerably by 2100. Then, the coastline may be eroded to the present urban area.

Manhattan Island in New York is no exception. With many Gulf cities exposed to major changes as a result of global warming, cities with money such as New York are using big money to protect them from rising above sea level.

'We have unplugged the refrigerator that is Earth,' said Benjamin Strauss, CEO and Chief Scientist at Climate Central, a non-profit organization that reports on climate change such as global warming.

Researchers such as Strauss estimate that by 2100 the sea level of the Earth will rise by about 4 feet.

'Once you unplug the refrigerator, it can't be restored anymore. The polar ice melts,' Strauss warned.

The impact of sea level rise affects many people living in the Gulf city. According to the United Nations, more than 600 million people live below 30 feet above sea level.

So far, sea level rise to 2100 is considered to be 4 feet, but if greenhouse gas emissions are greater than before, sea level rise will be 10 feet (about 3 m) to 20 feet (about 6 m) Strauss thinks that it will not be strange to reach.

In cities such as Miami, when heavy rains and high tides occur, roads are flooded with water.

Strauss says that sea level rise is no longer a real problem.

The net service '

Surging Seas ' released by Climate Central is designed to give a visual indication of where erosion will occur when the sea level rises ...

It is possible to look up cities in the world.

'Climate change tends to be abstract and looks like a distant problem for many people. We want this to be realistic and familiar,' Strauss said.

In the face of such a sea level rise problem, in the beginning of 2019, an ambitious project to protect the

lower Manhattan located at the southernmost tip of Manhattan Island was announced.

New York is building 50 to 100 feet (about 30 meters) exterior walls and plans to protect southern Manhattan Island, which is low above sea level.

Originally New York has reclaimed the sea to expand the urban space, but this time we will do construction to protect the town from the sea.

However, the cost of the project is expected to be huge, and it may cost as much as $ 10 billion (approximately 1 trillion yen).

Jainry Bavishi, New York City

Mayor's Office of Disaster Mitigation Office , helped research on the climate change risk facing southern Manhattan.

Mr. Cavishi and others have taken measures to cope with various hazards such as changes in precipitation and temperature rise as well as sea level rise. 'Imagine water flowing into the city every time it's high tide. If you open the door, the street is full of water,' says Mr. Cavishi.

If water flows into the subway, it is expected that the infrastructure will have a major impact.

The foundation of the building may be corroded.

In order to cope with these problems, there is a plan to set up a floodgate in the main part of the city at the timing of the flood.

During a flood, the lock rises and prevents water from flowing into the lowlands.

However, at the time of writing, it is unclear how to raise funds, and the details of the project have not been decided.

However, the rise in water results in major changes to urban planning, says Griggs.

Lower Manhattan has the financial hub of

Wall Street, which is the economic center.

That's why a lot of work is concentrated in Lower Manhattan and there are many subways, Bavishi points out.

In order to protect New York's economy, it is necessary to protect Lower Manhattan.

Rising sea levels have already caused damage in some areas, and in some parts of Alaska and Louisiana there are people who have been eroded and forced to migrate.

In the United States, more than 310,000 buildings will be vulnerable to chronic floods by 2045.

Strauss points out that cities will spend a large amount of money to protect the current city, as it is impractical to move a city where people and economy are concentrated.

While it is unlikely that the coastline will rise in an instant, the movie claims that Gulf cities need to cope with sea level rise as a real threat, as there is a good chance that sea level rise will accelerate. .