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Seismology. Main earthquakes recorded

Seismology. Main earthquakes recorded Catalonia. 2017
Date Time of origin Northern latitude (1) Southern latitude (1) Depth of focus (km) Magnitude (Richter Scale) County
January
10 13:11 42.971 N 0.027 W 5 1.7 Hautes-Pyrénées
15 16:41 42.281 N 2.317 E 9 2.0 Ripollès
February
6 17:50 43.011 N 0.010 W 7 2.5 Hautes-Pyrénées
15 04:08 43.049 N 0.249 W 9 3.3 Pyrénées-Atlantiques
18 23:04 42.318 N 1.325 E 0 2.4 Alt Urgell
18 23:08 42.320 N 1.327 E 1 1.7 Alt Urgell
19 10:01 41.841 N 2.656 E 4 1.7 Selva
19 11:05 42.317 N 1.331 E 0 2.7 Alt Urgell
19 12:18 42.318 N 1.328 E 0 1.7 Alt Urgell
19 17:17 42.323 N 1.325 E 1 2.1 Alt Urgell
19 19:17 42.321 N 1.326 E 1 1.9 Alt Urgell
19 22:34 42.321 N 1.325 E 0 1.7 Alt Urgell
19 22:42 42.320 N 1.326 E 0 1.9 Alt Urgell
20 06:56 42.319 N 1.328 E 0 2.1 Alt Urgell
20 11:09 42.319 N 1.329 E 0 3.2 Alt Urgell
20 11:32 42.318 N 1.326 E 0 1.9 Alt Urgell
21 00:26 42.316 N 1.328 E 0 1.8 Alt Urgell
21 06:02 42.317 N 1.324 E 0 1.7 Alt Urgell
21 06:25 42.316 N 1.326 E 1 1.9 Alt Urgell
21 08:13 42.316 N 1.322 E 1 2.2 Alt Urgell
21 08:50 42.918 N 0.414 E 2 2.7 Hautes-Pyrénées
21 14:55 42.321 N 1.320 E 0 1.7 Alt Urgell
21 18:25 42.317 N 1.322 E 0 2.4 Alt Urgell
21 23:44 42.317 N 1.318 E 0 2.5 Alt Urgell
22 06:12 42.317 N 1.317 E 1 1.9 Alt Urgell
23 14:36 42.319 N 1.317 E 0 1.7 Alt Urgell
24 11:36 42.316 N 1.321 E 1 2.7 Alt Urgell
24 11:39 42.317 N 1.318 E 0 2.2 Alt Urgell
24 11:42 42.317 N 1.325 E 0 2.1 Alt Urgell
24 11:45 42.318 N 1.321 E 1 2.0 Alt Urgell
24 16:19 42.314 N 1.312 E 2 2.0 Alt Urgell
26 13:06 42.318 N 1.314 E 0 2.1 Alt Urgell
28 04:41 42.318 N 1.312 E 0 1.8 Alt Urgell
28 04:43 42.319 N 1.314 E 0 1.8 Alt Urgell
March
11 03:36 42.995 N 0.036 W 5 1.8 Hautes-Pyrénées
14 03:45 42.517 N 2.172 E 6 2.3 Pyrénées-Orientales
21 10:39 42.575 N 0.938 E 2 1.9 Alta Ribagorça
23 00:58 42.593 N 0.885 E 14 2.4 Alta Ribagorça
23 11:43 42.962 N 0.234 W 6 2.3 Hautes-Pyrénées
23 14:14 43.000 N 0.122 E 9 1.8 Hautes-Pyrénées
29 22:49 41.836 N 2.650 E 4 1.7 Selva
29 23:38 41.834 N 2.655 E 10 3.1 Selva
April
2 00:21 41.781 N 2.740 E 5 2.0 Selva
2 12:23 41.031 N 3.065 E 20 1.7 Mar Mediterrània - Menorca
10 14:14 41.655 N 2.370 E 2 1.9 Vallès Oriental
15 11:04 41.837 N 2.651 E 8 3.8 Selva
15 16:54 41.828 N 2.656 E 9 2.3 Selva
15 17:04 41.833 N 2.656 E 10 1.9 Selva
15 19:03 41.835 N 2.654 E 9 2.9 Selva
26 15:12 43.003 N 0.165 E 15 3.6 Hautes-Pyrénées
26 22:18 43.011 N 0.175 E 7 1.9 Hautes-Pyrénées
May
5 14:09 41.300 N 0.997 E 9 2.1 Baix Camp
8 02:08 42.994 N 0.011 W 4 3.4 Hautes-Pyrénées
8 02:10 43.012 N 0.028 E 8 1.8 Hautes-Pyrénées
10 03:00 41.832 N 2.652 E 9 2.0 Selva
11 09:37 42.810 N 0.117 E 10 2.0 Hautes-Pyrénées
13 11:26 42.961 N 0.297 E 11 2.2 Hautes-Pyrénées
18 09:51 42.655 N 3.320 E 10 1.8 Mar Mediterrània - Lleó
27 00:23 41.789 N 2.961 E 7 1.7 Baix Empordà
27 04:04 43.028 N 0.113 W 8 2.5 Hautes-Pyrénées
30 16:47 43.011 N 0.139 W 4 2.6 Hautes-Pyrénées
June
1 19:00 42.556 N 0.222 E 0 1.9 Huesca
4 04:16 42.487 N 1.998 E 14 2.4 Pyrénées-Orientales
6 23:50 43.005 N 0.141 W 1 1.7 Hautes-Pyrénées
10 19:44 41.767 N 2.974 E 2 1.8 Baix Empordà
12 21:40 42.601 N 2.106 E 10 2.4 Pyrénées-Orientales
12 22:39 42.608 N 2.108 E 10 2.0 Pyrénées-Orientales
19 00:11 41.831 N 2.656 E 10 1.7 Selva
27 13:39 41.831 N 2.656 E 10 2.0 Selva
July
7 15:58 42.971 N 0.185 E 7 1.8 Hautes-Pyrénées
8 00:25 43.008 N 0.147 W 2 1.9 Hautes-Pyrénées
11 22:13 42.494 N 2.523 E 10 2.1 Pyrénées-Orientales
16 16:05 41.751 N 2.427 E 3 1.7 Vallès Oriental
28 14:11 42.671 N 0.114 E 0 2.4 Huesca
30 20:15 41.837 N 2.652 E 10 1.8 Selva
August
6 06:51 41.345 N 2.690 E 4 1.7 Mar Mediterrània - Balears
7 10:25 41.133 N 2.082 E 9 2.4 Costa Baix Llobregat
September
5 05:13 43.005 N 0.019 E 0 2.1 Hautes-Pyrénées
14 03:31 42.964 N 0.077 E 0 2.1 Hautes-Pyrénées
27 11:06 41.839 N 2.654 E 4 2.3 Selva
October
28 19:06 42.786 N 0.229 E 2 3.7 Hautes-Pyrénées
30 21:18 42.975 N 0.243 E 0 1.8 Hautes-Pyrénées
November
2 13:35 42.970 N 0.304 E 1 3.3 Hautes-Pyrénées
12 17:33 43.007 N 0.202 E 0 2.6 Hautes-Pyrénées
December
3 11:58 42.395 N 1.111 E 3 1.7 Pallars Sobirà
9 13:38 40.735 N 0.920 E 5 1.8 Costa Baix Ebre
15 21:20 43.140 N 0.002 W 9 1.7 Hautes-Pyrénées
20 03:32 43.157 N 0.197 W 0 1.7 Pyrénées-Atlantiques
Source: Institut Cartogràfic i Geològic de Catalunya.
Note: (1) in degrees.

Last update: February 9, 2018.

Methodological note

Definition of concepts

Magnitude of an earthquake
Instrumental measure of its force. It is related with the energy transported by seismic waves. It is expressed in decimal figures in accordance with the Richter scale, whose highest value is 9.
Profundity of the focus of the earthquake
Distance from the point where the earthquake originated and the epicentre or point of vertical projection over the surface of the Earth. It is expressed in kilometres.
Earthquake
Set of shockwaves generated from a point within the Earth, called its focus or hypocentre, as result of which there is a sudden release of energy produced by a brusque movement between blocks of the crust and the mantle of the Earth. They are defined by the following: magnitude and depth of the focus.

Methodological aspects

The Western Mediterranean is located in a collusion zone between the European and African tectonic plates.

The Seismology Service was created in 1981 to study in detail the seismic activity in the territory, to monitor it closely, and to determine and characterise the seismic zones.

Since 1984, hypocentral determinations have been conducted in consideration of the Service's own data and that of other bodies: the Midi-Pyrénées Observatory, the Institute of Catalan Studies, the National Geographic Institute, the Ebro Observatory, the Fabra Observatory and the Detection and Geophysical Laboratory. Information on seismic activity in Catalonia and its neighbouring regions is released annually in the Seismic Bulletin published by the Geological Institute of Catalonia.

The criterion was to select all the seismic movements those that had an epicentre within the Catalan territory and were of a magnitude equal to or higher than 1.7 on the Richter scale.

Provisional data.