What impact did the earthquake in Japan have on the earth?

American scientists say that the earthquake in Japan accelerated the rotation of the earth.

[Abstract] Scientists from the National Aeronautics and Space Administration 1 1 said that an earthquake measuring 8.8 on the Richter scale occurred in Japan, which reduced the earth's rotation time by 1.6 microseconds, that is, the daily time by 1.6 microseconds. 1 microsecond is equal to one millionth of a second. Richard Gross, a geophysicist at NASA, said that the Japanese earthquake caused changes in the quality of the Earth, which in turn affected the Earth's rotation.

Scientists from the National Aeronautics and Space Administration of the United States 1 1 said that an earthquake measuring 8.8 on the Richter scale occurred in Japan, which reduced the earth's rotation time by 1.6 microseconds, that is, the daily time by 1.6 microseconds. 1 microsecond is equal to one millionth of a second. Richard Gross, a geophysicist at NASA, said that the Japanese earthquake caused changes in the quality of the Earth, which in turn affected the Earth's rotation.

On June 5438+0 1 day, a strong earthquake occurred in the Pacific Ocean in northeastern Japan, which triggered a tsunami and caused huge losses. This earthquake is the fifth strongest in the world since 1900.

8.8 Earthquake statement

This earthquake is a reverse fault earthquake and is called a "special case"

According to the Japan Meteorological Agency, the earthquake and the earthquake measuring 7.3 on the Richter scale that occurred in northeastern Japan on the 9th were both reverse fault earthquakes at the junction of plates. The earthquake on the 9 th may be a precursor earthquake, and this earthquake is the main one. Hiroshi Yokoyama, chief of the Earthquake and Tsunami Monitoring Section of the Japan Meteorological Agency, said that it is unprecedented for a huge earthquake to occur immediately after an earthquake of magnitude 7 or above, and this earthquake is a "special case".

Reverse fault is a kind of fault in seismic structure, which is a fault in which the upper wall rises and the lower wall falls relatively, and is mainly formed by horizontal compression.

8.8 earthquake rumors

It is not credible that the earthquake or spread to North China.

Hebei Youth Daily News (Reporter Xie) It is reported that the seismic activities in Japan and North China are synchronized in time. In this regard, Jin, an earthquake researcher at the Seismological Bureau of Hebei Province, said yesterday that this statement is not credible.

Regarding whether the earthquake in Japan is related to the earthquake in North China, Jin said that the relationship between earthquakes is very complicated, and the formation of earthquakes is related to the concentration and transfer of crustal stress. This time, the stress concentration has released a lot of energy, and whether it will cause stress concentration in another place has not been clearly determined. The mechanism of earthquake is very complicated and related to geological structure, so this statement is not credible.

The earthquake has nothing to do with the "super moon"

Recently, some netizens have discussed that the "super moon" on March 19 will cause major disasters such as earthquakes and volcanic eruptions. In this regard, Li Ji, a professor of astronomy at the School of Physical Science and Information Engineering of Hebei Normal University, said that the influence of celestial bodies on the earth is mainly gravity, such as tidal changes caused by the movement of the moon. But earthquakes and volcanic eruptions are mainly caused by crustal movement and have nothing to do with the "super moon". Bai Shi, an astronomical science consultant at Shijiazhuang Youth Palace, said that "super moon" is not a rigorous scientific concept. Generally speaking, the moon appears at perigee, which is the result of its normal movement. ■ Text/reporter Cai Wei

8.8 Earthquake Q&A

Why does the Tokyo Tower bend?

The earthquake caused the Tokyo Tower to bend. Yesterday, Weng, a professor in the Department of Civil Engineering of Hebei Institute of Civil Engineering and Architecture, explained that when an earthquake occurs, there will be different forms of seismic waves, whether longitudinal waves, transverse waves or surface waves, which will make the ground fluctuate. When an earthquake occurs, the seismic force formed by the earthquake acts on the building. The higher the building, the greater the earthquake force and the greater the deformation. When the stiffness of the tower top can't resist such a large earthquake force, the tower tip will have great deformation and inclination.

Weng Suwei said that this is a preliminary analysis based on the information consulted, and the specific details need further argumentation. ■ Text/reporter zhangyan

Why does it snow after the earthquake?

Snowfall occurred after the earthquake in Japan. Is this snowfall caused by a big earthquake? Zhang said that this is a complicated process. At present, there is no mature research result on the relationship between earthquake, tsunami and weather.

Some experts also said that the earthquake will release huge energy in a short time, which will cause the bottom atmosphere to be heated to form an updraft. Earthquakes can also lead to an increase in the amount of dust in the air, and the combination of rising water vapor and dust is easy to form precipitation.

The earthquake in Japan caused sea level to rise.