An aurora (plural: auroras or aurorae) is a natural light display in the sky， particularly in the high latitude (Arctic and Antarctic) regions， caused by the collision of energetic charged particles with atoms in the high altitude atmosphere (thermosphere).
The charged particles originate in the magnetosphere and solar wind and are directed by the Earth's magnetic field into the atmosphere.
Aurora is classified as diffuse or discrete aurora. Most aurora occur in a band known as the auroral zone which is typically 3° to 6° in latitudinal extent and at all local times or longitudes.
The auroral zone is typically 10° to 20° from the magnetic pole defined by the axis of the Earth's magnetic dipole. During a geomagnetic storm， the auroral zone will expand to lower latitudes.
The diffuse aurora is a featureless glow in the sky which may not be visible to the naked eye even on a dark night and defines the extent of the auroral zone.
The discrete aurora are sharply defined features within the diffuse aurora which vary in brightness from just barely visible to the naked eye to bright enough to read a newspaper at night.
Discrete aurorae are usually observed only in the night sky because they are not as bright as the sunlit sky. Aurorae occur occasionally poleward of the auroral zone as diffuse patches or arcs (polar cap arcs) which are generally invisible to the naked eye.
极光守护者英语介绍的相关内容
曙光守护者剩下的四个是谁
瑶:遇见神鹿
铠:曙光守护者
花木兰:水晶猎龙者
百里玄策:热力回旋
张良:缤纷绘卷
伽罗:箭羽风息
女守护者哪个职业刷图快
1、精灵骑士
种族:精灵
守护者：独角兽
可以乘骑独角兽移动，紧急状态下可以召唤独角兽协助战斗
职业特征:连招能力、防御能力很强
最擅长使用盾牌的职业，衍生连招也非常多，可以沉着应对任何战斗状况
2、龙骑士
种族:龙族
守护者：龙类
职业特征：伤害取决于如何维持长时间的守护者，守护者存在与否伤害差距巨大。
可以使用龙类特殊技能：龙息术，龙之咆哮等
手游福牛守护者皮肤还会返场吗
手游福牛守护者皮肤还会返场的。
首先福牛守护者系列皮肤也是目前上架时间最长的春节限定皮肤。他们将从2021年的2月5日售卖至2022年的2月5日。会返场的。
s8星之守护者怎么玩
1、阵容组成
万花通灵-妮蔻、幻翎-洛、仙灵女巫-璐璐、九尾妖狐-阿狸、暮光之灵-佐伊、风暴之怒-迦娜、暗黑元首-辛德拉、远古巫灵-泽拉斯、众星之子-索拉卡
2、羁绊效果
6星之守护：当星守英雄释放技能时，会将25点法力值在其他星守英雄之间传递。
4法师：全体友军获得40%法术强度。
2圣盾使：圣盾使在使用技能时获得30%最大生命值的护盾。
2星神：全体友军造成伤害的15%转化为生命回复。
2秘术：全体友军获得50点魔抗。 wWW。ZjKWEiqI。cn
1大魔法师：大魔法师在场时，星守英雄的…
远古守护者多久刷新
十二个小时刷新一次
远古犀牛也就是洞穴二层的远古守护者，杀了之后就不会刷新了，但是可以通过删存档的方式来重置洞穴二层，进入饥荒存档的文件夹，删除洞2的存档，重置后就又有远古犀牛了，但是切记删除的时候自己不能在洞穴二层中。