In which layer of the atmosphere does the aurora appear

To be precise, auroras appear in the ionosphere of the atmosphere.

The aurora appears over the high magnetic latitude of the planet and is a brilliant and colorful luminous phenomenon.

And the Earth's aurora, a stream of high-energy charged particles from the Earth's magnetosphere and the Sun (solar wind.

It is produced by the excitation (or ionization) of molecules or atoms in the upper atmosphere.

Auroras are generally ribbon-shaped, arc-shaped, curtain-shaped, and radial, and these shapes are sometimes stable and sometimes change continuously.

Aurora is a process of mass discharge around the Earth. Charged particles from the sun reach the vicinity of the Earth, the Earth's magnetic field.

Forcing a part of it to concentrate along the field line to the north and south poles. When they enter the upper atmosphere of the polar regions, they collide with and excite the atoms and molecules in the atmosphere, producing light that forms the aurora. The place that is often seen is in Alaska, within two ring bands around 67 degrees north and south latitudes.

There are more than 200 days of aurora in Fairbanks throughout the year.

Hence the name "Northern Lights."

capital". So the aurora can only be seen at the north and south poles of the earth.

The aurora borealis is regarded as one of the most beautiful wonders in nature. If we were on a spaceship.

If you look over the north and south poles of the earth and look at the earth from the far reaches of space, you will see a shining ring of light around the earth's magnetic poles, which is called the aurora egg. Because they are slightly flattened towards the side of the sun and slightly stretched on the side facing the sun, they take on an egg-like shape. The aurora egg is in a continuous change, sometimes bright and sometimes dark, sometimes stretching towards the equator, sometimes shrinking towards the pole.

I do not know. Oh! ~!

11 And he remembered his jacket. The ionosphere is the ionized part of the Earth's upper atmosphere, at an altitude of about 60-1000 km. There are two processes that produce ionization, namely photoionization from solar polar ultraviolet rays and soft X-rays, and impact ionization of charged particles.

According to the vertical distribution characteristics of electron density, the ionosphere can be divided into several different regions (layers) such as the ionosphere, the outer layer, and so on, and the maximum ion concentration of electrons in the ionosphere appears in the region at an altitude of about 300 km. The sudden change of electron concentration in the ionosphere will seriously affect the propagation and reflection of electromagnetic waves in the ionosphere, and affect short-wave communication, satellite-to-ground communication, navigation and positioning between the ground, and so on.

Auroras appear in the sky above the high magnetic latitudes of the planet and are a brilliant and colorful luminous phenomenon. Auroras are brilliant and beautiful at night due to the sun's stream of charged particles (solar wind) entering the Earth's magnetic field, and appear at night at high altitude in areas near the Earth's north and south poles. It is known as the Southern Lights at the South Pole and the Northern Lights at the North Pole.

Auroras often appear in the sky above the geomagnetic pole at latitude, generally in the form of bands, arcs, curtains, and radials, and these shapes are sometimes stable and sometimes change continuously.

Most auroras occur 90---130 kilometers above the Earth. In 1959, a Northern Lights measured at an altitude of 160 kilometers and a width of more than 4,800 kilometers. But some aurora are much higher, reaching heights of more than 560---1000 kilometers.

Auroras appear in the ionosphere of the atmosphere and are luminous due to charged energetic particles from the magnetosphere and the solar wind being carried into the Earth's atmosphere by the geomagnetic field and colliding with atoms in the upper atmosphere (thermosphere). Auroras often appear in the sky above the geomagnetic pole at latitude, and are generally ribbon-shaped, arc-shaped, curtain-shaped, and radial. <

Auroras appear in the slippery ionosphere of the atmosphere and are caused by the luminescence caused by charged energetic particles from the magnetic impulse and the solar wind that are carried into the Earth's atmosphere by the geomagnetic field and collide with atoms in the upper atmosphere (thermosphere). Auroras often appear in the sky above the geomagnetic pole at latitude, and are generally ribbon-shaped, arc-shaped, curtain-shaped, and radial.

Basic classification of aurora:1. According to the classification of aurora, it can be divided into uniform arc aurora, ray beam aurora, ray arc with aurora, curtain aurora, aurora crown, etc.

2. According to the electromagnetic wave band observed by the aurora, it can be divided into optical aurora, radio aurora, etc.

3. According to the type of excited particles of dispersed dry spike, it can be divided into electron aurora, proton aurora, etc.

4. According to the aurora occurrence area, it can be divided into aurora cap, aurora with aurora, mid-latitude aurora red arc, etc.

1.Interlayer.

2.Ionosphere.

Correct Answer: Ionosphere.

The magnetic field lines of the Earth's magnetosphere carry the energy of the solar wind into the Earth's interior, which in turn drives the formation of the geomagnetic field. In addition to the conductors of electricity in the Earth's interior, there is also a weak conductor of electricity in the ionosphere of the atmosphere. When the solar wind is strong, the magnetic field line energy meets the magnetic induction resistance of the earth's interior, and a lot of energy cannot be consumed in the crack, and the aurora is formed in the ionosphere.

Aurora is an atmospheric optical phenomenon. When sunspots and flares are violently active, the sun emits a large number of strong streams of charged particles, moving along the magnetic field lines of the geomagnetic field to the north and south poles, and it enters the upper layers of the earth's atmosphere at a very fast speed, and its energy is equivalent to the power of tens of thousands or hundreds of thousands of hydrogen bombs. Due to the high speed of charged particles, when they collide with atoms in the air, the electrons in the outer shell of the atoms gain energy.

When the energy gained by these electrons is released, it emits a visible beam of light, a fascinating color known as the aurora.

In Sweden, Norway, the former Soviet Union and northern Canada, the aurora can be seen about 100 times a year, mostly in spring and autumn. In the Hudson Bay region of northern Canada, the Northern Lights are seen about 240 times a year. In the Mohe area of Heilongjiang Province, the northernmost part of China, people can often see the colorful Northern Lights.

The cause of the aurora.

A large number of charged particles erupt from the sun and blow into interplanetary space at a speed of hundreds of kilometers per bridge second, forming the solar wind. Particles that reach near the Earth constantly hit the Earth's magnetic field and flow around the Earth. Under the blowing of the solar wind, the Earth's magnetic field is no longer symmetrical and has become somewhat "streamlined".

Due to the interaction with the interplanetary magnetic field, a "funnel region" of magnetic field lines is concentrated outside the poles of the deformed Earth's magnetic field. When the magnetosphere is disturbed, the charged particles of the magnetotail are accelerated, move along the magnetic field lines, pour down the edge of the funnel like flowing water into the "funnel zone", and hit the gas molecules and atoms in the upper atmosphere, causing the latter to be excited, deexcited and emitted, so that this beautiful light is produced.

When a solar storm occurs, the magnetospheric disturbance becomes violent, and a geomagnetic storm occurs. At this time, it will excite a monochromatic light of a wider variety of colors. These lights are mixed together to create a colorful, bizarre and spectacular aurora, like a colorful neon sign.