Earthquakes: Cross-correlation detector in #ObsPy is used to match a template from one seismic event to a longer trace from a seismometer, returning events which correlate above a user-defined threshold. Applying this to
#RaspiShake RD884, in Constantine, Cornwall, UK at a threshold of 0.80, I have identified 33 separate events in a swarm of multiplets (or repeaters) from the last week, identical earthquakes produced repeatedly from the same source. 12 of the events from this swarm have also been reported by #BGSSeismology. The largest event has a magnitude of 1.7, so they are all very small, although the M1.7 event was felt at the surface. The #ObsPy tutorial I followed is here: https://docs.obspy.org/master/tutorial/code_snippets/xcorr_detector.html and
#BGSSeismology report the swarm here: https://earthquakes.bgs.ac.uk/earthquakes/recent_uk_events.html.
@wmvanstone Mark, I think at some point we are going to have to print out your social media archive, staple it together, and submit it to some uni's earth science department so they can award you a PhD in seismology. Very impressive work
@geoginger thank you Emily. I was very pleased with this analysis. Twitter was like being back in my undergraduate university department and I was really enjoying the community there, which sadly seems to have mostly dissipated now. I do really appreciate your comment and hope you are enjoying your new role.
@wmvanstone I miss Twitter sometimes too, although towards the end there I was doing a lot more doomscrolling than anything else. I hope Mastodon can build that community back slowly