Human-made dams and changes in the tilt of the Earth
Humans have built over 6,800 dams in the last 200 years to produce farming, drinking water and electricity.
There is a lot of water in the dam
I found that the weight of the water changes the tilt of the earth slightly.
The Earth has a phenomenon called "polar movement."
This means that the axis of Earth's rotation moves little by little
For example, when a hammer thrower turns a heavy hammer, the body moves a little.
Even on the Earth, when the location of a heavy object changes, the axis moves.
In the past, the power of the sun and moon, the ice melted, and the continents moved, and the poles of the earth moved slowly.
However, even human activity can move in a short amount of time.
A study from Harvard University in the United States shows that storing water in a dam reduces the ocean water and changes the balance of the Earth's weight.
Between 1835 and 2011, the Earth's pole moved about 113cm.
Of these, 104cm occurred in the 20th century.
It is also known that using groundwater can change the tilt of the earth.
This impact could be even stronger if the ice melts due to climate change
This study shows that human activity has a major impact on the whole planet.
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