Yes, there should be regulations of structures that alter the Earth because if we do not regulate certain industries or aspects that we control, we could drastically damage the planet. We are meant to be caretakers of this planet, not its destroyers. We must make sure we are affecting it positively.
Yes, there should be regulations on structures that alter the Earth. We may not know all the consequences of altering the Earth's rotation, but clearly there will be some effect. This is a potential problem to all of us. It is another example of ecological problems around the globe, like global warming.
Earth’s rotation changes frequently, with many different variables added into the equation. First, we have the moon gradually receding from the Earth changing Earth’s rotation ever-so-slightly. Earthquakes (like the mega quake in Japan back in 2011) also help along the process (the same quake changed Earth’s rotation by 2.68 microseconds). Furthermore, every 5 years (or so), the length of the day increases and decreases by about a millisecond, or about 550 times larger than the change caused by the Japanese earthquake.
Still, this knowledge begs many interesting questions. Namely, how far is too far? Individually, these things don’t make much of a difference one-way-or-another, but together, who knows.
Structures such as the Three-Gorges dam should be regulated by international standards. While NASA have said that there would only be approximately 0.6 microseconds added to the day by the structure, they do not know what the long-term implications may be. Changing the structure of the Earth could have unforeseen and catastrophic consequences for the entire population of the Earth.