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Volcanic activity on Red Planet behind Marsquakes: Study

Research, Sydney, Researchers, World News, Volcanic Activity, Red Planet, Australian National University

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5 Dariya News

Sydney , 04 Apr 2022

Volcanic activity beneath the surface of Mars could be responsible for triggering repetitive marsquakes, which are similar to earthquakes, in a specific region of the Red Planet, an international team of researchers suggested. The team from the Australian National University (ANU) and the Chinese Academy of Sciences in Beijing discovered 47 previously undetected marsquakes beneath the Martian crust in an area called Cerberus Fossae, a seismically active region on Mars that is less than 20 million years old. They speculate that magma activity in the Martian mantle, which is the inner layer of Mars sandwiched between the crust and the core, is the cause of these newly detected Marsquakes. The findings, published in the journal Nature Communications, suggest magma in the Martian mantle is still active and is responsible for the volcanic Marsquakes, contrary to past beliefs held by scientists that these events are caused by Martian tectonic forces. According to geophysicist Professor Hrvoje Tkalcic, from the ANU Research School of Earth Sciences, the repetitive nature of these quakes and the fact they were all detected in the same area of the planet suggests Mars is more seismically active than scientists previously thought. "We found that these Marsquakes repeatedly occurred at all times of the Martian day, whereas Marsquakes detected and reported by NASA in the past appeared to have occurred only during the dead of night when the planet is quieter," Tkalcic said. 

"Therefore, we can assume that the movement of molten rock in the Martian mantle is the trigger for these 47 newly detected Marsquakes beneath the Cerberus Fossae region." The researchers used data collected from a seismometer attached to NASA's InSight lander, which has been collecting data about marsquakes, Martian weather and the planet's interior since landing on Mars in 2018. Using a unique algorithm, the researchers were able to apply their techniques to the NASA data to detect the 47 previously undiscovered Marsquakes. The study authors say while the quakes would have caused some shaking on Mars, the seismic events were relatively small in magnitude and would barely be felt if they had occurred on Earth. The quakes were detected over a period of about 350 sols, a term used to refer to one solar day on Mars, which is equivalent to about 359 days on Earth. According to Tkalcic, the Marsquake findings could help scientists figure out why the Red Planet no longer has a magnetic field. "The Marsquakes indirectly help us understand whether convection is occurring inside of the planet's interior, and if this convection is happening, which it looks like it is based off our findings, then there must be another mechanism at play that is preventing a magnetic field from developing on Mars," he said. "Understanding Mars' magnetic field is crucial for future missions and also if scientists one day hope to establish human life on Mars."

 

Tags: Research , Sydney , Researchers , World News , Volcanic Activity , Red Planet , Australian National University

 

 

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