Quote:
Originally Posted by oil pan 4
Mars is being photographed regularly by orbiter, if there was an impactor big enough to cause an hour long M4 quake it would have been found quickly.
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* geosynchronous orbit, or 'circling' orbit ?
* would the satellite have ' been there' at the moment of impact to see it ?
* what is the size of a 'metallic' meteorite massive enough to create an M4 signal?
* what is the size of a 'rocky' meteorite massive enough to create an M4 signal?
* are these two 'sizes' within the resolving power of the satellite recording instruments?
* on Earth, a single seismic event can trigger a 'swarm' of seismic events, which continue to 'ripple' along after the initial brittle-rupture event.
* an again, are we talking about an average seismic amplitude over the duration of one-hour, or a 'constant' seismic amplitude?