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arXiv physics/9907033physics.ao-ph
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对过去几百万年地球气候变化的一种可能解释

A possible explanation for Earth's climatic changes in the past few million years

W. Woelfli, W. Baltensperger

摘要:

米兰科维奇的天文学理论将地球过去的气候变化与轨道参数振荡引起的日射变化联系起来。然而,这一理论在解释过去几百万年来观察到的一些主要现象方面存在问题。在这里,我们对这些现象提出了另一种解释。它基于这样一种想法,即直到不久前,太阳系还包含一个行星大小的额外大质量物体。这个被称为Z的物体被认为是在一个与太阳紧密相连的高度偏心的轨道上移动的。它通过蒸发物质的气体云影响了地球的气候。计算表明,在过去的320万年里,它不止一次地接近地球,足以引起两极地理位置的重大变化。最后一次这样的转变在大约11.5 kyr前结束了地球的冰期。本文还讨论了Z的起源和命运。

英文摘要:

The astronomical theory of Milankovitch relates the changes of Earth' past climate to variations in insolation caused by oscillations of the orbital parameters. However, this theory has problems to account for some major observed phenomena of the past few million years. Here, we present an alternative explanation for these phenomena. It is based on the idea that the solar system until quite recently contained an additional massive object of planetary size. This object, called Z, is assumed to have moved on a highly eccentric orbit bound to the sun. It influenced Earth's climate through a gas cloud of evaporated material. Calculations show that more than once during the last 3.2 Myr it even approached the Earth close enough to provoke a significant shift of the geographic position of the poles. The last of these shifts terminated Earth's Ice Age epoch about 11.5 kyr ago. The origin and fate of Z is also discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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