Counterbalancing the tilt of earth

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In summary: In other words, its speed changes over time. And the direction of this change is called the rotational vector. The rotational vector points in the direction of the object's angular momentum.
  • #1
infoharsha23
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Hello,

Recent NASA study has shown that the construction of Three Gorges Dam in China has contributed to shift in the pole thus increase in the tilt of the axis of rotation. Now my doubt is, can this tilt or shift in pole be restored by constructing another similar dam in diametrically opposite direction of Three Gorges?

Some important things related to planet needs to be considered:

1. All objects on the planet are subjected to Newtonian Gravity directed towards center of earth.

2. Earth is rotating and not stationary

3. Directions, North and South are meaningless in space

I hope some expert would give the best answer for the counterbalancing of the tilt and shift in pole axis.

Advance thanks,

Harsha
 
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  • #2
The NASA scientists Chao and Gross calculated that the filling of the Three Gorges Dam would affect the rotation, not the tilt, of the Earth by 60 billionths of a second per rotation.

They also calculated that the Sumatra earthquake sped up the planet by a few millionths of a second. That's a 1000x larger effect. And motions within the molten core of the planet can change the rotation by thousandths of a second.
 
  • #3
Why?

The change is incredibly small, too small to be measurable. It is a calculated result. The changes in the Earth's rotation rate and rotation axis due to large (very large) earthquakes are much bigger than those caused by the Three Gorges Dam -- and those earthquake-induced changes are also calculated rather than measured changes.
 
  • #4
Fine, in fact the same study has said that the Three Gorges Dam has caused a shift in pole by 0.8 inch.

Even going by hypothetical case, that the Three Gorges Dam has tilted or shifted the pole, can it be counterbalanced by another dam in diametrically opposite location to Three Gorges Dam, please I need this answer precisely.

Advance thanks

Harsha
 
  • #5
infoharsha23 said:
Fine, in fact the same study has said that the Three Gorges Dam has caused a shift in pole by 0.8 inch.

Reference, please?
 
  • #6
North and South are not meaningless in space. Though linear constant velocity is relative, rotation is not. That is because a rotating object is continually undergoing acceleration.
 

What causes the tilt of the earth?

The tilt of the earth is caused by its axial tilt, which is the angle between the earth's rotational axis and its orbital plane around the sun.

How does the tilt of the earth affect seasons?

The tilt of the earth is responsible for the changing seasons. When the northern hemisphere is tilted towards the sun, it receives more direct sunlight and experiences summer, while the southern hemisphere is tilted away and experiences winter.

Why is counterbalancing the tilt of earth important?

Counterbalancing the tilt of the earth is important because it helps to regulate the amount of solar radiation and heat that each hemisphere receives, maintaining a balance between the seasons and preventing extreme temperature variations.

Can the tilt of the earth change over time?

Yes, the tilt of the earth can change over time due to various factors such as gravitational interactions with other planets, changes in the earth's orbit, and geological events. However, these changes are very gradual and occur over thousands of years.

What are the potential consequences of a significant change in the tilt of the earth?

A significant change in the tilt of the earth could have significant impacts on climate and weather patterns, potentially leading to extreme weather events and disrupting ecosystems. It could also affect the length of days and nights, potentially disrupting the activities of plants and animals that rely on daylight hours.

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