@hypocentre ...and the signal from three #RaspberryShake geophones located in #Montreal. We're just over six minutes travel-time away. Urban noise >4Hz filtered out. #UrbanSeismology

The Magnitude 7.8 earthquake in Turkey 05Feb23 EST, as detected in Montreal.

Big and shallow; affecting both Turkey and Syria.
#RaspberryShake #UrbanSeismology

@geo_garver ...and it shook #Montreal basements (imperceptibly): the geophone records vertical motion, here in microns per second. #RaspberryShake #UrbanSeismology

@stevenjgibbons For comparison, here's the record of a large explosive event in North Korea in September 2017, recorded by the #RaspberryShake network.

Of course, #Montreal is at the center of the Earth!
#UrbanSeismology

Part of a trace showing a small earthquake just off the west end of #Montreal, ~18 km from a #RaspberryShake. It occurred at ~5 am, 07Jan22, mag 2.4 mb_lg. The day/night contrast of city noise is also clear! #UrbanSeismology

@Weston_Quakes I've added two #RaspberryShake traces from #Montreal. Mag. 5.4 ml EQ near Midland Texas on 16Dec22. Normal fault striking NE-SW. #UrbanSeismology

Two recordings of the Reno, Alberta mainshock of 29 Nov 2022 (mag 5.1 Mw), both from the west side of Montreal (3,190 km distance). Top trace of each is unfiltered, bottom is low-pass filtered to remove urban noise. #raspberryshake #urbanseismology
Top geophone (R9499) is on clay substrate in a busier location. Plotted using USGS Swarm.

Find the earthquake in the Montreal area (15Nov22, magnitude 3.0 mb_lg, 3.5 MN). #raspberryshake #urbanseismology