The reporter learned from the National Space Weather Monitoring and Warning Center of the China Meteorological Administration that due to the impact of the coronal mass ejection event, from yesterday (10th) to the early morning of this morning, a special geomagnetic storm broke out in the earth's magnetic field. Geomagnetic storms are the most intuitive experience for the public that auroras will be observed at high latitudes. It is understood that in the early morning of today (11th), gorgeous auroras appeared in Altay in Xinjiang, Xilinhot in Inner Mongolia, and Mohe in Heilongjiang.
Geomagnetic storms have minimal health effects and do not require protection
When a geomagnetic storm erupts, short-wave communication and navigation and positioning in most parts of the continent will be affected to varying degrees. In addition, there are concerns that geomagnetic storms can affect human health. In fact, geomagnetic storms mainly affect the orbit of aircraft and satellites, and most of them can be measured and controlled. The impact on the daily life and health of the public is negligible, and there is no need for protection.
However, strong geomagnetic activity may affect the animal's ability to migrate and navigate. For example, for carrier pigeons that are navigated by the sun and geomagnetism, the impact is greater.
The Sun is in a period of intense activity when coronal mass ejects radiofrequency
At present, the sun is in a period of frequent activity, flares and geomagnetic storms are frequent, only in the last few days, coronal mass ejection events have appeared as many as 6 times, the next 24 hours, what kind of situation will occur, poke the video ↓↓↓ Let's take a look at the analysis of experts from the National Space Weather Monitoring and Warning Center of the China Meteorological Administration.
High solar activity years have a high probability of coronal and geomagnetic storm events
What is coronal activity and what is geomagnetic storm activity? Let's take a look at how they affect the planet and people's lives.
Coronal mass ejection is a typical solar eruption, driven by the strong magnetic field of sunspots, hundreds of millions or even trillions of tons of coronal material are thrown out at a high speed of hundreds to thousands of kilometers per second, and then form an explosion-like shock wave, which is quickly transmitted to all parts of the solar system. Under its action, the direction and magnitude of the earth's magnetic field change significantly, and geomagnetic storms occur. As magnetic storms intensify, the Earth's upper atmosphere is constantly heated, expanding and spreading into higher space, which creates additional drag for spacecraft to fly in orbit, resulting in a drag-like deceleration effect and reducing the orbital altitude of the spacecraft.
We are currently in the rising period of the 25th activity week of the sun, and as of now, there are sunspots on the surface of the sun every day this year, as little as one or two, and more than ten, compared to 2019, the situation of 281 days of sunspots.
The sunspot activity zone is the source of the sun's eruptions, which is where the magnetic field is strongest and the energy is most dense on the surface of the sun, and typical events such as flares and coronal mass ejections often come from sunspots. The aurora is actually just a "by-product" of geomagnetic storms, after the coronal material carries the energy of the sun and meets the earth, part of it will enter the poles with the earth's magnetic field, and collide with the atmosphere at a height of 100 to 400 kilometers from the ground, the process of impact is accompanied by energy exchange, these energy are absorbed by the extranuclear electrons of atmospheric atoms and molecules, and then quickly released, and the result of release is to produce luminescence. Green and red aurora come from oxygen atoms, while purple and blue aurora tend to come from nitrogen atoms.
Judging the momentum of future solar activity based on the current change in sunspot number, 2024 is still the high year of solar activity.