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China Dam: NASA has warned that due to China’s huge Three Gorges Dam, the Earth’s rotation speed has slowed down. Due to the huge amount of water stored in the dam, the speed of Earth’s rotation has slowed down by 0.6 micro seconds every day. Due to excess water in the huge Three Gorges Dam built on the Yangtze River, it has changed the moment of inertia of the Earth, due to which a change in speed is being seen while rotating.
For example, a skater spins faster by pulling his hands inward and slows down his speed by spreading them. Similarly, the speed of rotation of the Earth is affected by the expansion of water. When the mass of any object is near the center of the Earth, the Earth rotates faster. However, when the mass spreads over the earth’s surface, its speed slows down. For this reason, the water kept in the Three Gorges Dam is considered to be the main reason for reducing the speed of the earth.
What do NASA scientists say?
According to NASA scientist Benjamin Fong Chao, this Three Gorges Dam has slowed down the Earth’s rotation speed by 0.06 microseconds per day. However, this change is quite small. But it shows how man-made structures can affect Earth’s natural processes.
How is the speed of Earth’s rotation affected?
Moment of inertia plays an important role in understanding the speed of rotation of the Earth. This explains how the mass is stretched in relation to the Earth’s axis of rotation. When a large amount of water accumulates, this mass spreads towards the equator, due to which the Earth’s moment of inertia changes. 40 billion cubic meters of water can be stored in Three Gorges Dam. Transfers this month towards the equator. This slightly increases the moment of inertia of the Earth, due to which the speed of the Earth slows down a bit.
Three Gorges Dam a technological marvel
The Three Gorges Dam is also a great miracle from a technical point of view. This dam is 185 meters high and more than 2 kilometers long, which is the world’s largest power generating dam. At its full capacity it generates 22,500 MW of electricity, providing energy to millions of homes and industries.
