However, it cannot be considered as the main reason. There are still several other factors that are estimated to have a greater impact than predicted. Although the melting ice layers can affect the movement of the Earth's poles, it turns out that groundwater can also cause similar effects.

According to the latest research published in Geophysical Research Letters, Ki-Weon Seo from National University stated that the Earth's rotational poles have undergone significant changes.

Based on the analysis, researchers project that the Earth's axis undergoes a shift of about 1.7 inches per year due to groundwater discharge. The groundwater is estimated to originate from locations around the Earth's mid-latitude, such as the United States and India.