Shielded by the wind: the influence of the interstellar medium on the environment of Earth
Shielded by the wind: the influence of the interstellar medium on the environment of Earth
复制标题
风的屏蔽：星际介质对地球环境的影响
DOI：
10.1016/s1364-6826(02)00078-0
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发表时间：
2002
影响因子：
1.9
通讯作者：
O. Stawicki
中科院分区：
文献类型：
--
作者：
K. Scherer;H. Fichtner;O. Stawicki
我们报告了最近关于宇宙射线对地球环境的长期影响的研究。虽然在短时间尺度上，太阳活动是大气变化的驱动因素，怀疑是由于宇宙射线，但在长时间尺度上，日光层，即太阳大气膨胀部分所占据的太阳周围区域，必须加以考虑。日光层被认为是抵御星际影响和危险的重要屏障。定量模型已经证明，太阳围绕银河系中心的准开普勒运动导致日球层周围星际介质的变化，引发了中性原子通量增强以及宇宙射线通量增加造成的行星环境的重大变化。我们汇编了大气科学界感兴趣的最新空间科学成果。
We report on the recent studies on the long-term influence of cosmic rays on the Earth's environment. While on short time-scales solar activity is the driver for atmospheric changes suspected to be due to cosmic rays, for long time-scales the heliosphere, i.e. the circumsolar region occupied by the expanding part of the Sun's atmosphere, has to be considered. The heliosphere is identified as an important shield against interstellar influences and hazards. It has been demonstrated by quantitative modelling that a change of the interstellar medium surrounding the heliosphere as a result of the Sun's quasi-Keplerian motion around the galactic center triggers significant changes of planetary environments caused by enhanced fluxes of neutral atoms as well as by the increased cosmic ray fluxes. We give a compilation of recent space science results of interest to the atmospheric science community.