It has long been thought that animal behaviour could provide an early warning of seismic activity. In 2011, scientists said animals may be able to detect chemical changes in groundwater which precede a quake. Their study was prompted by a colony of toads abandoning its pond in the Italian city of L'Aquila days before it was devastated by a 6.3magnitude quake. Another study observed changes in wild animal behaviour in the three weeks before Peru's 7.0 magnitude earthquake in 2011.
很久以来,人们就认为动物的行为能够为地震提供早期预警。2011年,一些科学家称动物或许能够察觉到地震前地下水里化学物质的变化。一场6.3级的地震摧毁了意大利拉奎拉地区的一座城市,那里的一群蟾蜍在地震前离开了它们栖息的池塘。这一现象推动了这些科学家们的研究。另一项研究发现,秘鲁7级地震前三周里,野生动物的行为发生了变化。
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