Biggest Mars earthquakes ever recorded… One lasted 94 minutes

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NASA’s marsquake hunter has detected the two largest seismic events to date. The first seismic event was magnitude 4.2, and the second was magnitude 4.1. Although the severity of the second seismic event was less, it was remarkable that it lasted 94 minutes.

Biggest Mars earthquakes ever recorded… One lasted 94 minutes

in November 2018 MarsNASA’s InSight rover is carrying the most sensitive seismometer ever designed. Using the signals to map the interior of the planet, he detected numerous events called marsquakes. However, according to scientists, the two newly announced earthquakes were quite remarkable.

“Not only are they the largest and most distant events by a significant margin, they have a different spectrum and duration than any previously observed event,” said Anna Horleston of the University of Bristol in the United Kingdom.

The first seismic event, called S0976a, was 4.2 magnitude and occurred on August 25, 2021. The second marsquake, designated S1000a, occurred 24 days later, on September 18, 2021. This event is 4.1 magnitude and its exact location is unknown. The S1000a stood out in particular, taking 94 minutes.

“Recording events within the core shadow zone is a real stepping stone to our understanding of Mars,” said Savaş Ceylan, a seismologist at ETH Zurich in Switzerland.

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