Thursday, April 25, 2019

And... InSight Lander Records First Audio Evidence Of... A "Mars-Quake"!


I'm a little tardy in getting this post out -- been busy, on various pro bono matters.

Here is the first tangible dividend, from plopping an ultra sensitive seismometer on the Barsoom surface. We of course love it. And here's the latest NASA download:

. . . .[The below] video and audio illustrates a seismic event detected by NASA's InSight on April 6, 2019, the 128th Martian day, or sol, of the mission.

Three distinct kinds of sounds can be heard, all of them detected as ground vibrations by the spacecraft's seismometer, called the Seismic Experiment for Interior Structure (SEIS): There's noise from Martian wind; the seismic event itself; and the spacecraft's robotic arm as it moves to take pictures.

This event is the first likely marsquake recorded by the InSight team. Several other seismic events have been recorded but are much more ambiguous than this signal. The audio underscores just how seismically noisy the Martian surface can be and was produced from two sets of sensors included with SEIS. You can hear sounds from the Very Broad Band sensors from your left speakers and sounds from the Short Period sensors from your right speakers. Audio from both sets of sensors have been sped up by a factor of 60; the actual vibrations on Mars would not have been audible to the human ear. Playback on headphones or speaker system recommended for best experience. . . .




We are still awaiting results of Earth-side testing, on the drilling / hammering rig. More news on that, likely next month. It is exceedingly interesting that the quake would occur on April 6. Hmmmm. . . Onward, with a goofy grin -- love the nerdy interplanetary science stuff.

नमस्ते

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