专家称太阳风暴未远去随时造成灾难性后果 - 未名空间MITBBS历史存档

国际科技财经博客移民网络热点娱乐民生时事公众号

Redian新闻

>未名空间

>Astronomy - 天文

专家称太阳风暴未远去随时造成灾难性后果

专家称太阳风暴未远去随时造成灾难性后果# Astronomy - 天文

g*e2003-10-28 08:10

1 楼

http://tech.sina.com.cn/other/2003-10-28/1136249271.shtml
新浪科技讯　美国东部时间10月27日(北京时间10月28日)消息，科学家近日警告称，
最近的发生的太阳风暴可能带来的灾难性后果，恐怕只有144年前的那次太阳风暴可以
相提并论了。
根据最近科学家掌握的内部数据表明，历史上最大的太阳风暴发生在1859年9月1
日与2日。
巨大的太阳风暴发生在太阳表面，其能量如同巨大的炸弹。随后，它给地球带来
了许多的问题。而这一次太阳风暴发生的地方位于太阳表面中部。
太阳风暴主要由太阳表面新形成的巨大黑子群释放出的气体和带电粒子流引起。
太阳风暴以每小时约320万公里的速度向地球“吹”来。
太阳风暴会对许多技术部门产生巨大的影响。即使是不发达的19世纪，同样也到
了巨大的影响。在太阳风暴发生的几个小时内，在美国与欧洲的电报线路同时发生短
路的现象，并因此引发了大量的火灾。
人们总是惊叹于北极美丽的极光。极光是带电粒子受到了磁场吸引后产生的现象
。当北极发生极光时，罗马、哈瓦那和夏威夷的天空都被它照亮。
加利福尼亚州的Bruce Tsurut

s*t2003-10-28 08:10

2 楼

Sunspots are cold solar regions where strong magnetic
field locate (about 0.2 Tesla). The magnetic filed lines
extend to the solar corona, with hot plasma (almost
million degrees) together with them. Due to some
motions, positive magnetic field collide with the
nagative field lines, heat will be emitted from
the cancellation of magnetic energies, and particles
will be accelerated. Flares occur, and large amount
of particles are ejected from the solar corona.
So, flares occur above the sunspots.

s*t2003-10-28 08:10

3 楼

I think it is very abnormal. If there is only
1 or 2 X1 and greater flares, it is fine. But
from last week, there are already 6 flares
> X1. And also, naked-eye sunspot is very
rare, but from last week, it already has
three very huge sunspots, including one
which formed from nothing: the day before
yesterday, I did not see anything, but
suddenly, something grew up there and
reached size of a jupiter within 1 day,
and could be seen by naked eyes yesterday
morning.

s*t2003-10-28 08:10

4 楼

No, size does not matter. It usually depends on
the material motions inside the Sun.
Sunspots are actually formed inside the Sun.
Think of them as cylinders with magnetic field
lines parallel with its axis. Because magnetized
materials are lighter, they will rise up to
the solar surface due to buyancy. During its
rise, if they pass a region with cyclic motions
(just for example), the field lines are no longer
parallel, but twisted. We call such magnetic
field complicated. They are flare producti