季节总是吗?- 江南体育网页版- - - - -地球科学堆江南电子竞技平台栈交换 最近30从www.hoelymoley.com 2023 - 07 - 08 - t20:40:29z //www.hoelymoley.com/feeds/question/9511 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/9511 5 季节总是吗? wogsland //www.hoelymoley.com/users/7335 2017 - 01 - 22 - t03:16:23z 2018 - 04 - 21 - t07:33:42z < p >地球有摆动,导致太阳能季节性变化在北半球和南半球的整个历史吗?这种变化明显的地质记录还是一个悬而未决的问题?可能像一颗流星影响6600万年前造成恐龙有改变或创造了摆动吗?有什么因素抑制或随着时间的推移增加季节性波动? < / p > //www.hoelymoley.com/questions/9511/-/9512 # 9512 5 季节总是MaxW回答的了? MaxW //www.hoelymoley.com/users/4685 2017 - 01 - 22 - t04:53:38z 2017 - 01 - 22 - t16:09:53z < blockquote > < p > < em >地球有摆动,导致太阳能季节性变化在北半球和南半球的整个历史吗?< / em > < / p > < /引用> < p >首先,它取决于你如何定义“整个历史”。有一个pre-earth遭受一个火星大小的身体。碰撞碎片最终陷入目前的地球和月球。如何大规模pre-earth是和它的轨道参数是“未知”,意思是我们知道的参数更精确地比我们今天知道的参数。< / p > < p >第二这里有两个因素。每年季节性(变异)主要由地球的轴向倾斜造成即使地球和太阳之间的距离变化有点因为地球的轨道是一个椭圆,而不是一个圆。然而< em >摆动< / em >地球更好更好地描述为< a href = " https://en.wikipedia.org/wiki/Axial_precession " rel = " nofollow noreferrer " >旋进地球轴的< / >,它目前有大约26000年的时期。< / p > < blockquote > < p > < em >是在地质记录这种变化明显还是一个悬而未决的问题?< / em > < / p > < /引用> < p >有证据表明在地质记录季节和旋进目前地球变化。< / p > < p >的冰川和海洋沉积物同位素组成反映每年的温度变化。 The yearly temperature changes also cause seasonal changes in the distribution of the earth's weight which effect the precession and tilt.

Lava cools leaving imprints of the instantaneous magnetic field of the earth over geological time. The interaction of the magnetic field drift and reversal, the precession of the earth, the axial tilt of the earth, and the plate movement of the earth is not well understood. It is basically governed by chaotic system interactions. For example plate movement can cause earthquakes which are as of yet unpredictable.

Again what the precession and tilt were like for the "pre-earth" is mostly a mystery.

Could a meteor impact like that which killed the dinosaurs 66 million years ago have altered or created the wobble?

The impact that created the moon was with a Mars sized body and definitely effect the earth's precession and tilt.

Are there any factors dampening or increasing the seasonal wobble over time?

Moon damps the tilt over geologic time. The instantaneous flow of the liquid magma inside the earth may increase or decrease the precession and/or tilt, but as the earth cools the overall effect is to decrease both.

//www.hoelymoley.com/questions/9511/-/13955 # 13955 1 克里斯蒂安Factora回答的季节总是吗? 克里斯蒂安Factora //www.hoelymoley.com/users/12729 2018 - 04 - 21 - t05:30:36z 2018 - 04 - 21 - t07:33:42z < blockquote > < p >地球有摆动,导致太阳能季节性变化在北半球和南半球的整个历史吗?< / p > < /引用> < p >地球摆动这是因为它遵循equinox进动周期和你所说的摆动是章动发生。这是扭矩T产生角速度o乘以角动量L . < / p > < p > <强> T = o x L < /强> < / p > < p >一个完整周期平均需要26000年,地球已经有40亿年的近似基础上碳约会的岩石。< / p > < p > <强> 4000000/26000 = 153800岁差周期< /强> < / p > < p >一个周期是足以改变不同季节的变化,如一个月的Decemeber可能面临夏天,冬天,秋天和春天整个旋进的持续时间。但真正影响总气候变化是基于米兰柯维奇周期,他演绎的一份声明中,倾斜轴向旋进从22.1到24.5度改变气候,比较我们现在倾斜23.5度为每100000年可能发生的。< / p > < p > 100000/26000 = 3.8或4岁差周期< / p > < p > 153,800 / 4 = 38450岁差季节性大约米兰柯维奇变化。< / p > < p >这是一个很多的时间来得出结论,地球经历了季节性变化了很长时间。这个已经回答这个问题2。这种变化明显的地质记录还是一个悬而未决的问题?< / p >

Could a meteor impact like that which killed the dinosaurs 66 million years ago have altered or created the wobble?

There are theories that linked the extinction of dinosaurs or meteor impact million years ago such as India-Eurasia Collision which created the modern Himalayan which causes flattening the pole and elongating the surface that changes orientation on axial tilting. Meteor impact theory might not be enough to killed the dinosaurs 66 million years ago. Climate should be seen as a major factor that makes extinction for a certain species. Yet smaller biodiversity are more likely to be adaptive to harsh climate condition enable them to survive and evolve later years.

Are there any factors dampening or increasing the seasonal wobble over time?

Wobble might increase or decrease over time when plate tectonics shifts postion. This is because the distribution of plates varies to the degree of rotation of the Earth. Such as in our generation 2000 AD, looking on geodetic Earth and bathymetric structure leads you to observe flattening of the pole and elongation at equator. The contribution of Himalayan mountain and subduction of the Pacific trench affects the speed rotation thus altering different cycles calculated such as precession and obliquity of the true pole.

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