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Seismology. Main earthquakes recorded

Sismologia. Principals terratrèmols registrats Catalonia. 2006
Date Hora d'origen Latitud nord (1) Longitud est (1) Profunditat del focus (km) Magnitud (escala Richter) Comarca
Gener
1 12:46 42.300 1.470 0 1.9 Alt Urgell
16 21:11 41.860 1.960 10 1.0 Bages
28 12:26 42.350 1.410 6 2.2 Alt Urgell
29 15:28 42.310 1.470 0 1.0 Alt Urgell
29 20:09 42.300 1.470 0 1.0 Alt Urgell
30 19:39 42.460 1.760 2 1.0 Cerdanya
Febrer
7 14:59 42.420 1.740 0 3.0 Cerdanya
14 08:24 42.470 1.730 0 1.1 Cerdanya
27 16:54 41.850 2.590 7 1.2 Selva
Març
2 13:00 42.710 0.750 10 1.4 Val d'Aran
11 17:50 42.660 0.810 10 1.4 Val d'Aran
15 22:55 40.650 0.860 18 2.2 Costa Montsià
15 22:57 40.690 0.740 28 1.4 Montsià
16 03:06 42.300 1.460 0 1.3 Alt Urgell
17 12:03 42.320 1.460 2 1.5 Alt Urgell
20 23:51 40.720 1.060 19 1.2 Costa Baix Ebre
21 23:03 41.660 2.370 9 2.4 Vallès Oriental
26 05:13 42.270 1.300 1 1.5 Alt Urgell
27 07:45 42.270 1.750 0 1.0 Berguedà
27 14:25 42.360 0.870 6 1.0 Pallars Jussà
27 17:46 42.150 3.930 8 1.6 ar Mediterrani
28 11:10 41.580 2.450 3 1.0 Maresme
30 22:33 40.720 0.390 28 1.7 Montsià
Abril
1 02:31 40.730 0.440 .. Confidential data, low reliability or not available 1.3 Montsià
4 03:14 40.750 0.250 0 1.7 Montsià
14 15:40 42.610 1.070 5 1.1 Pallars Sobirà
15 04:47 42.430 2.310 1 1.0 Ripollès
18 10:06 42.450 1.210 9 1.0 Pallars Sobirà
20 09:03 42.440 1.400 23 1.7 Alt Urgell
21 00:20 42.350 1.440 9 1.1 Alt Urgell
29 07:39 42.540 1.300 1 1.3 Alta Ribagorça
Maig
1 19:50 42.330 2.150 6 1.7 Ripollès
9 23:20 42.330 2.150 4 1.2 Ripollès
14 03:38 40.990 0.270 11 1.3 Terra Alta
20 15:53 42.330 2.140 6 1.2 Ripollès
27 00:30 41.770 2.770 8 1.0 Selva
27 04:05 40.870 1.660 6 1.2 Costa Tarrag.
30 18:01 42.170 2.440 13 1.0 Garrotxa
31 06:42 42.330 2.150 4 1.1 Ripollès
31 09:52 42.250 2.270 4 1.0 Ripollès
Juny
2 08:21 41.820 2.780 9 1.7 Selva
2 09:11 42.420 1.340 0 1.2 Alt Urgell
2 23:13 41.830 2.780 8 1.4 Selva
4 13:24 42.070 2.580 3 1.5 Garrotxa
12 15:30 42.410 1.480 4 1.3 Alt Urgell
12 15:47 42.410 1.470 4 1.3 Alt Urgell
12 15:53 42.400 1.470 0 1.3 Alt Urgell
12 15:56 42.400 1.470 1 1.0 Alt Urgell
12 16:00 42.410 1.480 6 2.2 Alt Urgell
12 16:04 42.400 1.500 0 2.6 Alt Urgell
12 16:29 42.410 1.480 0 1.0 Alt Urgell
12 16:47 42.410 1.490 0 1.5 Alt Urgell
12 16:54 42.400 1.470 8 1.4 Alt Urgell
12 17:40 42.400 1.480 3 2.2 Alt Urgell
12 20:00 42.400 1.470 0 1.0 Alt Urgell
12 21:25 42.400 1.470 5 2.2 Alt Urgell
12 21:41 42.400 1.480 6 1.5 Alt Urgell
13 18:57 42.250 1.710 23 1.2 Berguedà
15 10:50 40.690 0.550 0 1.8 Montsià
27 05:33 42.420 2.380 4 1.7 Ripollès
27 07:00 42.430 2.370 0 1.1 Ripollès
Agost
3 15:49 42.360 1.460 0 2.5 Alt Urgell
11 23:25 42.310 2.410 4 1.1 Ripollès
12 02:10 42.310 2.420 7 1.1 Ripollès
12 06:09 42.310 2.420 6 1.0 Ripollès
15 23:41 41.850 2.710 1 1.0 Selva
21 18:37 42.220 1.710 8 1.4 Berguedà
25 22:57 42.270 1.970 9 1.2 Berguedà
Setembre
4 00:17 41.840 2.770 9 1.1 Selva
4 05:44 42.450 1.650 4 2.4 Alt Urgell
5 05:18 42.350 1.380 0 1.0 Alt Urgell
23 02:12 42.490 1.210 14 1.5 Pallars Sobirà
23 02:19 42.490 1.210 13 1.2 Pallars Sobirà
23 02:21 42.490 1.220 14 1.6 Pallars Sobirà
Octubre
4 18:04 41.790 2.740 7 1.1 Selva
7 17:31 42.400 1.970 8 2.2 Cerdany
18 14:00 42.780 0.700 0 1.0 Val d'Aran
Novembre
04 23:23 41.860 2.650 4 1.1 Selva
04 23:25 41.860 2.650 6 1.0 Selva
10 11:28 41.970 2.590 0 1.4 Selva
19 18:43 41.580 2.610 5 2.1 Costa Maresme
23 23:42 41.850 2.750 2 1.0 Selva
26 13:47 41.860 2.650 6 1.4 Selva
26 18:02 42.360 2.180 0 1.1 Ripollès
Desembre
02 10:54 41.570 2.610 5 2.4 Costa Maresme
05 06:20 42.560 1.110 7 1.8 Pallars Sobirà
12 05:17 41.590 2.610 3 1.1 Costa Maresme
14 01:49 1.770 2.000 9 1.6 Berguedà
19 16:07 41.590 2.620 9 1.1 Costa Maresme
19 17:59 41.580 2.590 7 2.1 Costa Maresme
19 18:06 41.620 2.620 5 1.5 Maresme
21 13:04 41.410 2.630 11 1.0 Costa Maresme
24 13:34 41.580 2.590 6 1.7 Costa Maresme
25 01:27 41.560 1.820 8 1.2 Anoia
26 22:55 41.610 2.600 13 1.1 Maresme
28 13:49 42.450 1.650 6 1.3 Cerdanya
29 22:40 41.600 2.600 6 2.0 Maresme
29 22:41 41.580 2.610 6 1.7 Maresme
30 08:56 41.600 2.620 7 2.1 Maresme
30 19:21 41.670 2.620 1 1.1 Maresme
31 03:34 41.830 2.900 10 1.1 Selva
Source: Institut Cartogràfic de Catalunya.
Notes:
Sismes amb magnitud igual o superior a 1 a l'escala de Richter.
(1) En graus i minuts.
(..) Confidential data, low reliability or not available.

Last update: June 18, 2009.

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.