November 30, 2022

NASA’s InSight Experiences its Most Powerful Marsquake so far: Magnitude 4.2, Lasting 90 Minutes

NASAs InSight lander has discovered among the most powerful and longest-lasting quakes on the Red Planet given that the start of its objective. The huge marsquake happened on Sept. 18 on Earth, which occurred to coincide with InSights 1,000 th Martian day, or sol given that it arrived at Mars.
The temblor is estimated to be about a magnitude 4.2 and shook for an unthinkable hour-and-a-half! For comparison, in the world, a lot of quakes last for just a few seconds, although 2 (one in 1960 and another in 2004) lasted for about 10 minutes. Scientists are still studying the data collected on this marsquake to determine why (and how) it sustained for such a long period of time.

This huge quake followed close on the heels of 2 other quakes that both happened on August 25 (on Earth) that had magnitudes of 4.2 and 4.1. The most significant previous quake InSight spotted was a magnitude 3.7 quake in 2019.
InSight scientists likewise will have the ability to figure out how far away the quake was from InSight. One of the August 25 quakes, the magnitude 4.2 event, occurred about 5,280 miles (8,500 kilometers) from InSight– the most distant temblor the lander has detected so far.
InSights Seismic Experiment for Interior Structure, or SEIS spots and studies seismic waves as they take a trip through the planets crust, core and mantle, which gives scientists a method to “look” inside Mars and learn more about its interior. The instrument, pictured below, is covered and secured by the domed Wind and Thermal Shield,
InSights domed Wind and Thermal Shield covers the Seismic Experiment for Interior Structure (SEIS). The landers robotic arm can likewise be seen in this image, handled the 110th Martian day, or sol, of the mission. Credit: NASA/JPL-Caltec
InSight is powered by solar panels, and thanks to a crazy maneuver earlier this year (check out it here) to help clear dust off the panels, InSight had enough power to identify the 3 big quakes, along with stay warm sufficient to keep operating. The landers photovoltaic panels have outlasted the two-year prime objective they were designed for and are now powering the spacecraft through a two-year objective extension.
” If we had not acted rapidly previously this year, we might have lost out on some great science,” stated InSights principal investigator, Bruce Banerdt at the Jet Propulsion Laboratory (JPL). “Even after more than 2 years, Mars seems to have given us something new with these two quakes, which have unique qualities.”
NASA says that depending on solar panels for power makes it possible for such missions to be as light as possible for launch and needs less moving parts– therefore, less potential failure points– than other systems. Although it is one of most-asked concerns about utilizing solar panels on Mars, engineers state that equipping the spacecraft with brushes or fans to clear off dust would include weight and failure points.
Lead image caption: This selfie of NASAs InSight lander is a mosaic comprised of 14 images taken on March 15 and April 11– the 106th and 133rd Martian days, or sols, of the objective– by the spacecraft Instrument Deployment Camera located on its robotic arm. Credit: NASA/JPL-Caltech
Source: JPL
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For comparison, on Earth, most quakes last for just a couple of seconds, although two (one in 1960 and another in 2004) lasted for about 10 minutes. Scientists are still studying the information gathered on this marsquake to identify why (and how) it endured for such a long time.

InSights domed Wind and Thermal Shield covers the Seismic Experiment for Interior Structure (SEIS). The landers robotic arm can also be seen in this image, taken on the 110th Martian day, or sol, of the mission.

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