These are local or significant earthquakes as detected by the MVGS RaspberryShake 3D seismometer.
Mexico September 2021
Alaska August 2021
Alaska M7.0 14th Aug 2021
This magnitude 7.0 quake occurred in Alaska, nearly 8,000 km away, about half an hour before the big one in Haiti and produced much the same response in the Mole Valley. The quake goes on for nearly four minutes and, as with the Haiti quake, there is no sign of S-Waves, only the main P-wave signal.
Haiti August 2021
Haiti M7.2 14th Aug 2021
This is the big, destructive earthquake in Haiti, as seen from the Mole Valley nearly 11 minutes later - some 7,250km away. The quake is from about 10km depth and there is no sign of any S-waves, which should have arrived about eight and a half minutes after the main P-wave. Of the many aftershocks, only the largest (M5.8) is visible from the Mole Valley - and that only just above the background noise.
English Channel June 2021
Japan February 2021
Croatia December 2020
Petrinja M6.4: Dec 29th 2020 11:20 UTC
A big quake from 1,389km away and 10km depth that took about three minutes to reach us and lasted at least six minutes (in the Mole Valley, at least). It was accompanied by many, many aftershocks and at least a couple of significant pre-shocks. Of these, only 4 quakes above M4.5 have been observable on our seismometer. The recording is bandpass filtered between 1 and 8 Hz.
Switzerland October 2020
Lincolnshire October 2020
Southern North Sea October 2020
Pyrenees September/October 2020
Jersey Earthquake September 2020
Leighton Buzzard Earthquakes September 2020
Leighton Buzzard M3.5: Sep 8th 2020 09:45 BST (= 08:45 UTC)
The first of the Leighton Buzzard earthquakes was quite large and stood out from the background noise on the day's seismogram.
Leighton Buzzard M3.5: Sep 8th 2020 08:45 UTC
Raw vertical trace (blue background) and bandpass filtered vertical (Z) and horizontal traces (E-W & N-S). See "Introduction to MVGS Earthquake Monitoring" in "Earthquakes and Seismograms" for interpretation.
Leighton Buzzard M2.1: Sep 13th 2020 23:21 UTC
Bandpass filtered vertical (Z - blue background) and horizontal (E-W and N-S) traces.
Leighton Buzzard M3.0: Sep 22nd 2020 08:32 UTC
Raw vertical trace (blue background) and bandpass filtered vertical (Z) and horizontal traces (E-W & N-S).
Leighton Buzzard M2.1: Sep 22nd 2020 12:39 UTC
Bandpass filtered vertical (Z) and horizontal traces (E-W & N-S).