Quote:
Originally Posted by oil pan 4
Mars recently had an an uptick in quakes to include an M4 quake that lasted over an hour. Yep sounds geologically dead to me.
If it's geologically dead then how can there be an uptick in geological activity.
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* an earthquake is a seismic event, right?
* seismic events are measured with seismometers, right ?
* anything that rattles a planet will show up on a seismometer ( on Earth, seismic activity produced by trucks and heavy equipment is recorded all day and night ).
* Mars has virtually no atmosphere.
* seismic activity could be explained by a non-ablated impactor striking the planet at over a hundred-thousand mph, depending on its direction.
* seismic waves travel around, are internally reflected, reverberate, and are ultimately attenuated over time as they peter out.
* an M4 'signal' is a logarithmic 'amplitude' ,not a signature of some specific anomaly.
* 'signals' are agnostic.
* The 'source' of the signal is not defined by the 'signal.'
* was the M4 signal 'constant' for over an hour, or was this a mean average magnitude, cascading lower and lower over that time period?