Jakarta, CNN Indonesia —
Strongest earthquake in Mars what happened in may of this year apparently lasted more than 10 hours. Earthquake it also broke the magnitude record set by the previous earthquake in August 2021.
Experts know this after studying the earthquake and publishing it in a magazine Geographic research letters. They saw that the tail of the earthquake wave lasted more than 10 hours.
“This earthquake was so massive that it exhibited several characteristics not seen in previous events. In addition to earthquake contours and Rayleigh waves, we also saw love waves and surface multi-orbital waves,” the experts wrote. .
“Over extended periods, the tail of the wave may exceed 10 hours,” they wrote.
Citing the repository site Unri, Love and Rayleigh waves in earthquakes are included in surface waves. The love wave is a horizontally polarized shear wave (SH wave).
The wave caused a horizontal displacement of the land. Meanwhile, they are also called Rayleigh waves earth roll and they move like ripples similar to the motion of waves on the surface of the water.
The strongest earthquake on Mars actually had only a magnitude 4.7 or 0.5 greater than the previous recorded earthquake that occurred in August 2021. However, for Mars, which has been seismically inactive for a long time, this magnitude is quite great.
“The energy released by this earthquake is equal to the cumulative energy of all earthquakes that have occurred on Mars and that we detect,” said seismologist John Clinton of the Swiss Federal Institute of Technology, who was also involved in the study. , as mentioned. Scientific alarm.
“And even though this quake was more than 2,000 km away, the waves recorded by the InSight spacecraft were so large that they nearly disturbed the seismometer inside,” Clinton added.
Compared to Earth, the strength of this earthquake was decidedly zero. Usually, an earthquake on Earth is classified as large if it has a magnitude of about 9.5.
Although Mars and Earth share many similarities, there are still key differences between the two planets. Mars, for example, lacks plate tectonics and a global magnetic field.
This is often interpreted by experts as a sign that not much is going on inside Mars. This is because on Earth the magnetic field is theoretically the result of thermal convection within it.
Earthquakes on Mars itself were recorded by NASA’s InSight probe, which has been operational since 2019. InSight recorded the interior of Mars and found that this planet is not as seismically passive as imagined.
Mars according to Insight logs is creaking and rumbling, a sign of volcanic activity under the Cerberus Fossae region. The area is the landing site of InSight.
For experts, determining the activity of Mars’ interior is not only aimed at monitoring earthquakes there. The way seismic waves propagate across the surface can also help reveal changes in density inside.
In other words, it can be used by experts to reconstruct the structure of Mars.
(lom/lth)
