The researchers created their climate model to study polar motion.

研究人员创建了的气候模型来研究极地运动。

A group of international scientists recently published their study of polar motion.

最近，一组国际科学家发表了他们对极地运动的研究。

Earlier studies linked the way water is spread out over the Earth to polar motion.

早期的研究将水在地球上扩散的方式与极地运动联系在一起。

He said that, in theory, making changes to slow the rate of groundwater removal could affect Earth's polar motion.

他说，从理论上讲，要采取行动，减缓地下水的减缓速度可能会影响地球的极地运动。

A 2016 study first showed evidence that ocean water flows can affect polar motion.

2016年的一项研究首次表明，有证据表明海水流动会影响极地运动。

Adhikari added that the study clearly demonstrates " the role of groundwater pumping on polar motion, and it's pretty significant."

阿迪卡里补充说，这项研究清楚地证明了“地下水抽水对极地运动的作用，这是非常重要的。”

The study notes that where the groundwater is pumped from affects how much polar motion happens.

这项研究指出，地下水从哪里抽出会影响极地运动的发生程度。

The scientists wanted to see if the movement of groundwater could help explain differences between observed and predicted polar motion.

科学家们想看看地下水的运动是否有助于解释观测到的极地运动和预测的极地运动之间的差异。

Described another way, polar motion is when the position of the planet's rotational axis moves in relation to Earth's crust.

另一种说法是，极移是指行星的旋转轴位置相对于地壳运动。

Scientists have known for more than 100 years that the Earth's poles change position a little over time with what is called polar motion.

100多年来，科学家们一直知道，地球的两极会随着时间的推移而稍微改变位置，这就是所谓的极移。