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The variability of meteoroid falling

机译：流星体下降的变异性

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We analysed a historical catalogue of meteoroid falling during the last 400 years. We report here for the first time the synchronization between observed meteors and solar barycentric parameters in 19.6 and 13.2 years periodicities using a new multiple cross wavelet. The group of moderated number of meteors is distributed around the positive phase of the solar barycentric periodicity of 13.2 years. While the group of severe number of meteors are distributed on the positive phase of the solar barycentric periodicity of 19.6 years. These periodicities could be associated with Jupiter periodicities. So understanding the modulation of meteoroid falling is important for determining the falling patterns of these objects and for knowing when it is more likely to expect the entry of one of these objects into the Earth's atmosphere, because bodies falling onto the Earth can cause damage from minor impacts to mass-extinctions events. One of the most extreme events was the formation of the Chicxulub impact crater 65,000,000 years ago that caused one of the five major mass extinctions in the last 500,000,000 years. During the 20th and 21st centuries, a series of events demonstrated the importance of collisions between planets and small bodies (comets and asteroids), which included our own planet. In the case of the Earth, we can cite three examples: Tunguska, Curuca and Chelyabinsk. These events invite us to think that perhaps the occurrence of this phenomenon might be more common than we realize, but the lack of communication or people in the area where they happened prevents us from having a complete record. Modern man has not witnessed the impact of large asteroids or comets on our planet, but it has been observed on other planetary bodies. The most spectacular of these events was the collision of fragments of the comet Shoemaker-Levy 9 with Jupiter in 1994. The total energy of the 21 impacts on Jupiter's atmosphere was estimated as the equivalent of tens of millions of megatons of TNT. (C) 2016 Elsevier Ltd. All rights reserved.
机译：我们分析了过去400年来陨石的历史目录。我们在这里首次报告使用新的多重交叉小波在19.6和13.2年周期中观测到的流星与太阳重心参数之间的同步。流星数量适中的组分布在太阳重心周期为13.2年的正相位附近。虽然这组流星数目很严重，但分布在太阳重心周期为19.6年的正相位。这些周期性可以与木星周期性相关联。因此，了解流星体坠落的调制方式对于确定这些物体的坠落模式以及了解何时更有可能期望其中一个物体进入地球大气层非常重要，因为坠落到地球上的物体会造成轻微的伤害对大灭绝事件的影响。最极端的事件之一是65,000,000年前的Chicxulub撞击坑的形成，这是过去500,000,000年来五次重大灭绝事件之一。在20世纪和21世纪，一系列事件证明了行星与小物体（彗星和小行星）（包括我们自己的星球）之间碰撞的重要性。在地球方面，我们可以举三个例子：通古斯卡，库鲁卡和车里雅宾斯克。这些事件使我们认为，这种现象的发生可能比我们所意识到的更为普遍，但是由于缺乏沟通或发生区域的人员缺乏，我们无法获得完整的记录。现代人没有亲眼目睹大型小行星或彗星对我们星球的影响，但是在其他行星体上已经观察到了。这些事件中最引人注目的事件是1994年Shoemaker-Levy 9彗星碎片与木星的碰撞。这21次撞击对木星大气的总能量估计相当于数千万兆吨的TNT。 （C）2016 Elsevier Ltd.保留所有权利。

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