Affected by geomagnetic storms
The aurora borealis has been seen again in many places in the Beijing area
The Great Wall of Jinshanling at the junction of Beijing and Hebei
The ancient Great Wall
The starry sky and the Northern Lights are spectacular
Jinshanling Great Wall
From the Lingshan Scenic Area in Beijing, the city lights in the direction of Huailai and the aurora complement each other.
Lingshan, Beijing
In the early morning of the 11th, gorgeous auroras also appeared in Altay, Karamay and other places in Xinjiang. The entire night sky is lit up by the aurora, and the sparkling light and the aurora complement each other, like a gorgeous picture.
It is reported that this is the second time that the aurora can be observed at 40 degrees north latitude on the mainland, and the last time was around May 11 this year.
National Oceanic and Atmospheric Administration of United States
A severe geomagnetic storm alert is issued
According to the latest news from CCTV News: United States, the National Oceanic and Atmospheric Administration issued a severe geomagnetic storm (G4 level) alert on the 10th, and said that the geomagnetic storm caused by the solar coronal mass ejection may reach G5 (extremely strong).
During the coronal mass ejection, a large amount of solar material will be thrown away from the surface of the sun at high speed, which is not only the kinetic energy formed by the convergence of huge mass and velocity, but also carries the strong magnetic field energy of the sun.
Footage of coronal mass ejection activity from SOHO satellite
From 8 a.m. on October 8 to 8 a.m. Beijing time on the 10th, five obvious eruptions occurred in the sun, among which the X2.1 flare that erupted in the solar active area 13842 at about 3:12 on the 8th, and the X1.8 flare that erupted in the active area 13848 at 9:56 on the 9th were the strongest, both reaching the level of large flares.
A flare is one of the most violent activity phenomena on the sun, usually embodied in a sudden and large-scale energy release process in a local area of the sun's surface, causing instantaneous heating of the local area, emitting various electromagnetic radiation outward, accompanied by a sudden increase in particle radiation, just like a person sneezing. Solar flares are divided into five levels: A, B, C, M, and X, with X being the most energetic level.
A geomagnetic storm is a typical type of solar eruptive activity. When the sun erupts, a coronal mass ejection (CME) occurs, a projectile can throw hundreds of millions of tons of solar material off the surface of the sun at a high speed of hundreds to thousands of meters per second, these materials contain huge energy, once they come towards the earth, hit the earth, will cause a change in the direction and magnitude of the geomagnetic field, which is a geomagnetic storm.
Combined with the grasp of solar activity, it is predicted that strong geomagnetic activity may occur from the 10th to the 12th. From the night of the 10th to the night of the 11th, a geomagnetic storm may occur, and if no new eruptive activity occurs, a small to moderate magnetic storm may occur on the 12th, and then gradually return to calm.
The current situation of the active area (sunspots) on the surface of the Sun Xihe
Remind all aurora lovers that from the early morning of the 11th to the early morning of the 12th, there is a chance of more obvious auroras in the northern part of the mainland, and there is even a possibility of red-green composite auroras in some areas.
Hong Kong media: Disturbed by strong geomagnetic storms
A flight from New York to Hong Kong was rerouted to Osaka
Cathay Pacific Airlines CX831 flight from New York to Hong Kong at 3:34 p.m. United States time on the 9th had to change its course to ensure safety due to the interference of abnormal astronomical phenomena on the original flight route.
At the same time, the flight course was changed and the flight time exceeded the statutory requirements of the Hong Kong Civil Aviation Department in terms of crew operation and rest time, and the flight landed at Kansai International Airport in Osaka, Japan. The flight finally landed at 10:11 p.m. local time on the 10th and arrived in Hong Kong.
The Cathay Pacific CX831 passenger plane took off from New York's JFK Airport at 3:34 p.m. United States time on the 9th, flew 13 hours and 51 minutes, landed at Kansai International Airport in Osaka, Japan at 6:25 p.m. on the 10th, Japan time, and then flew from Kansai International Airport to Hong Kong at 7:45 p.m. on the 10th, and landed in Hong Kong at 10:11 p.m. The flight arrived in Hong Kong one day later than scheduled.
Whether geomagnetic storms produce radiation
Is there any effect on the human body?
Experts say that high-energy particles interfere with the earth's magnetic field to produce geomagnetic storms, which have little impact on human health, but will have an impact on human life. For example, it will affect the propagation of radio waves, interfere with radio communications, affect the navigation of airplanes and ships, and even affect mobile phone signals; Energetic particles can also cause damage to artificial vehicles such as satellites and space stations, leading to malfunctions. Strong geomagnetic storms can also have an impact on power transmission (closed loop) systems and may even cause damage to transformers or other grid facilities, causing power outages.
In addition, geomagnetic storms can also have an impact on some biological activities. Pigeons, for example, rely on the Earth's magnetic field for their positioning and flight, and are therefore also affected by geomagnetic storms.
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