Some scientists have even proposed using such GPS disturbances to track tsunamis in the open sea, Okal added.

一些科学家甚至提出，可以用这种GPS的扰动来追踪海啸在开阔海面上的传播。

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Geophysicist Emile Okal agreed that the the tsunami spawned by the Chile earthquake wasn't really all that small.

地球物理学家埃米尔。欧卡尔认为智利地震产生的海啸其实真的不算小。

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"It is much larger than anything we've seen in the Pacific in 45 years," said Okal, of Northwestern University in Evanston, Illinois.

“这比我们45年来在太平洋见过的任何海啸都要大得多，”美国伊利诺斯州埃文·斯顿西北大学的欧卡尔说道。

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Dr Okal has used this technology to identify tsunamis caused by landslides (ie, the sort most likely to be dangerous, and thus require evacuations to be organised).

ECONOMIST: New ways of tracking these killer waves may help save lives