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第155章 四季和大陆漂移(1 / 2)

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说回正题吧:

当卫星进入甘石星轨道并稳定下来以后,并不意味着甘石星的变化就停止了,它还会因此产生更多的影响,而且还会维持相当长的一段时间才能稳定下来。

陨石云团是以黄道平面相交58度的角度进入甘石星轨道。引力互相影响。当卫星形成并进入甘石星轨道后,卫星的引力会造成甘石星自转轴偏移,最后黄赤交角稳定在20度左右。同时,甘石星在太阳系的轨道也会发生偏移,偏移是相对于黄道面的,不过,这个偏移量对甘石星的生态影响并不大,可以忽略不计。经过漫长的时间后,它会自然地回归到黄道平面上来,就像太阳系其它行星一样,始终保持在黄道平面上。有兴趣你可以看看相关资料,这里就不多说了。

这里说说甘石星自转轴的变化以及造成的影响吧。

我们知道,地球上一年有四季,这主要是因为地球的自转轴与黄道面相交23多度,也就是称为‘黄赤交角’。地球上除了低纬度以外,中高纬度的地区四季的变化都非常明显,这个我们都有体会。

当甘石星的自转角度改变后,它的生态就会发生较大的改变,同样的,它主要发生在中高纬度,赤道附近变化不大。你现在呆的地方,目前一年只有雨季和旱季之分,将来就和地球一样,变得四季分明了,只会越来越冷,越往两极会越冷,这是目前可以预料到的。

不过,这种变化还不足以造成灾难。人和动物可以迁移,不会有很大的影响,只要适应就可以了。但对不能迁移植物影响较大,有些不适应寒冷环境的可能就无法生长而消失,放心吧,生命自有其生存之法,环境改变后,动物和植物一定能够适应的。

如果说对人身体的影响,极可能出现在以下这几个方面。

刚才已经说过,在捕获卫星之后,甘石星的自转速度会有一定程度的减慢,那么,必然会引起甘石星向心力的变化。千百年来,那里人的身体、更直接地说是人的心脏,已经适应那种自转速度下的引力。随着自转速度的减慢,引力就会增加,表现在人的身体上就会感觉身体比以前重了,可能最直接的表现就是走路比以前更费力。这种情况据估计对人的影响不是太大。但对心脏比较弱或者对婴幼儿影响就比较大,也就是说,引力的增加,会直接增加心脏的负担,引起心脏病的发生,严重者会造成死亡。当然,这种情况是因人而异的,与本人的身体健康状态有关。

还有一种变化值得说一说,这是在卫星被捕获后才逐渐显现的。

前面说过,当卫星被捕获后,地表上天量的海水会产生大海啸,海啸运动的力就会施加在地壳之上,同时,甘石星的内部和地球一样,为同心状圈层构造。地心至地表依次为地核、地幔、地壳构成。如果把内部结构做个形象的比喻,它就像一个鸡蛋,地核就相当于蛋黄,地幔就相当于蛋白,地壳就相当于蛋壳。

由于地核处于最里层,卫星的引力对它产生的作用极其微小,这里忽略不计,重点是地幔、地壳和位于地壳上面的海洋、湖泊等水体。

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