This event was reviewed by an analyst and confirmed.
Type Quarry blast
Magnitude 1.7 MLv
Local datetime 2022/01/20 13:40
Universal datetime 2022/01/20 12:40
Latitude 47.16 ° ± 4 km
Longitude -1.85 ° ± 3 km
Depth 0 km (operator assigned) ± 0.0 km
See the seismogram of this event.

Near cities

This table shows only the most populated cities around the epicenter.
Name Distance (km) Population
Saint-Herblain  18 46268
Couëron  12 21372
Bouguenais  18 19331
Pornic  16 15018
Saint-Philbert-de-Grand-Lieu  18 8921
Sautron  18 8192
Bouaye  14 7844
Machecoul-Saint-Même  18 7473
Saint-Étienne-de-Montluc  13 7129
Sainte-Pazanne  8 6774
Chaumes-en-Retz  5 6759
La Montagne  13 6231
Vigneux-de-Bretagne  21 6030
Saint-Jean-de-Boiseau  11 5827
Le Pellerin  8 5100

Past seismicity

  This map shows only the 50 most significant earthquakes around this event.

Event details

Parameters

Evaluation status preliminary
RMS 0.4
Azimuthal gap 124.8 °
Number of stations used 10
Number of phases used 17

Webservices

The data of this event are available in various formats (QuakeML, GeoJSON and text) through the following links :

QuakeML GeoJSON Text

Phases

Network Station Phase Time Residual (s) Azimuth (°) Distance (°) Mode
FR BOUF Pg 12:40:38.29 -0.17 88.46 0.15 Manual
FR BOUF Sg 12:40:40.98 0.63 88.46 0.15 Manual
FR RIAF Pg 12:40:45.15 -0.14 46.12 0.51 Manual
FR RIAF Sg 12:40:52.35 0.25 46.12 0.51 Manual
FR BEGF Pg 12:40:45.35 -0.48 328.86 0.54 Manual
FR BEGF Sg 12:40:52.85 -0.19 328.86 0.54 Manual
FR LGIF Pg 12:40:49.83 -0.25 156.16 0.76 Manual
FR CRNF Pg 12:40:50.62 -0.52 91.09 0.82 Manual
FR GUEF Pg 12:40:52.22 -0.44 324.35 0.9 Manual
FR GUEF Sg 12:41:05.18 0.32 324.35 0.9 Manual
FR BIMF Pg 12:40:53.4 -0.21 280.97 0.93 Manual
FR BIMF Sg 12:41:06.87 0.97 280.97 0.93 Manual
FR DAUF Pg 12:40:57.32 0.32 63.14 1.14 Manual
FR MTNF Pg 12:41:00.27 0.1 30.97 1.31 Manual
FR MTNF Sg 12:41:17.98 0.11 30.97 1.31 Manual
FR PLEF Pg 12:41:01.53 0.05 346.56 1.38 Manual
FR PLEF Sg 12:41:19.77 -0.36 346.56 1.38 Manual