![]() ![]() The main reason is a regular wobble in the Moons orbit that takes 18.6 years to complete. Coastal cities across the globe like Florida, Hawaii etc which already see severe flooding are bound to see an exponential increase in the number of floods. Led by the members of the NASA Sea Level Change Science. You all know that floods cause drastic damage to lives and property and these are just a few of the consequences. We need to be prepared for worse flooding, especially those of us living in the coastal areas. With already higher sea levels, the wobble effect may cause higher tides and the highest level of floods ever. If the wobble is a regular occurrence, why are we expecting record floods in the 2030s? That is a consequence of climate change, global warming and the overall rise in the sea levels. Why is the wobble causing more impact now? In the second half (which is expected to happen in the next decade), the high tides are higher, while low tides are lower. In half of the moon’s 18.6-year wobble- cycle, Earth’s regular daily tides are suppressed: High tides are lower than normal, and low tides are higher than normal. ![]() The tides are impacted by the position of the moon and movement of the moon. As a result, a wobble can either suppress or amplify tides on Earth. Numbers of floods could quadruple as the gravitational effects of the lunar cycle combine with climate change to produce 'a decade of dramatic increases' in water disasters. This causes a fluctuation in the gravitational pull. The world faces an onslaught of coastal flooding starting in the mid-2030s due to a 'wobble' in the moons orbit, Nasa has warned. It’s similar to the vibrations of a spinning coin just before it falls flat. ![]() This movement happens once every 18.6 years. The change in velocity causes the moon to sway in its orbit. In its course, the elliptical orbit causes the velocity of the moon to change. When the moon revolves around the earth, it takes an elliptical orbit. The new study from NASA and the University of Hawaii, published recently in the journal Nature Climate Change warns that upcoming changes in the moon’s behaviour could lead to record flooding on Earth in the next decade. It turns out that currently, the moon is in one of those phases and NASA has assessed how that will affect the tides and overall sea levels globally, with more focus on the coastal areas in the USA. This is a regular phenomenon and happens occasionally for a few years. This causes the tides to fluctuate even more. As a result, new moon and full moon days cause higher or lower tides than normal.īut what you may not know is that the moon also ‘wobbles’ sometimes. The tides in the oceans are higher and lower based on the gravitational pull and the position of the moon, as it goes around the earth. According to Thompson, the next time this cycle is expected in 2030s, which will severely affect normal life, especially in coastal areas.You may have learnt about the relationship between the moon and the tides in the seas. In the other half, the effect is reversed, which is called the tide-amplifying phase of the Moon. In half of these 18.6 years, the Earth's regular tides are suppressed: high tides are lower than normal and low tides higher than normal. While the wobble has always been there, what makes it dangerous is that it will combine with the rising sea levels due to the planet's warming, said Thompson. Talking about the impact of the Moon on the flooding on Earth, Thompson said that the wobble in the Moon's orbit takes 18.6 years to complete. “The combination of the Moon’s gravitational pull, rising sea levels, and climate change will continue to exacerbate coastal flooding on our coastlines and across the world." “Low-lying areas near sea level are increasingly at risk and suffering due to the increased flooding, and it will only get worse,” said Nasa administrator Bill Nelson. ![]()
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