Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 20-11-2012 and time 02:33:57 (Italy) in region 1 km NE Castell'Alfero (AT)

A magnitude ML 2.0 earthquake occured in region: 1 km NE Castell'Alfero (AT), on

  • 20-11-2012 01:33:57 (UTC)
  • 20-11-2012 02:33:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.9890, 8.2160 at 28 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Castell'Alfero AT 1 2763 2763
Frinco AT 4 768 3531
Calliano AT 4 1317 4848
Tonco AT 4 866 5714
Portacomaro AT 5 2006 7720
Scurzolengo AT 6 555 8275
Corsione AT 6 218 8493
Penango AT 6 488 8981
Cossombrato AT 6 528 9509
Villa San Secondo AT 7 395 9904
Alfiano Natta AL 7 744 10648
Grana AT 7 600 11248
Chiusano d'Asti AT 8 220 11468
Castagnole Monferrato AT 8 1245 12713
Moncalvo AT 8 3033 15746
Montechiaro d'Asti AT 8 1276 17022
Settime AT 8 530 17552
Montemagno AT 9 1153 18705
Cinaglio AT 9 446 19151
Odalengo Piccolo AL 9 262 19413
Grazzano Badoglio AT 10 615 20028
Camerano Casasco AT 10 471 20499
Asti AT 10 76202 96701
Castelletto Merli AL 10 476 97177
Villadeati AL 10 479 97656
Casorzo AT 10 633 98289
Cortanze AT 10 277 98566
Soglio AT 11 145 98711
Cunico AT 11 496 99207
Ponzano Monferrato AL 11 356 99563
Viarigi AT 11 929 100492
Refrancore AT 12 1591 102083
Piea AT 12 583 102666
Ottiglio AL 12 629 103295
Cortazzone AT 12 654 103949
Murisengo AL 12 1436 105385
Montiglio Monferrato AT 13 1643 107028
Altavilla Monferrato AL 13 468 107496
Monale AT 13 984 108480
Cortandone AT 13 329 108809
Viale AT 13 257 109066
Castellero AT 13 302 109368
Olivola AL 13 122 109490
Azzano d'Asti AT 13 391 109881
Baldichieri d'Asti AT 13 1110 110991
Cereseto AL 14 437 111428
Serralunga di Crea AL 14 562 111990
Rocca d'Arazzo AT 14 936 112926
Odalengo Grande AL 14 442 113368
Frassinello Monferrato AL 14 502 113870
Castello di Annone AT 15 1860 115730
Vignale Monferrato AL 15 1006 116736
Cerrina Monferrato AL 15 1435 118171
Piovà Massaia AT 15 637 118808
Sala Monferrato AL 15 352 119160
Montafia AT 15 937 120097
Maretto AT 15 375 120472
Revigliasco d'Asti AT 15 767 121239
Roatto AT 15 400 121639
Mongardino AT 16 921 122560
Cerreto d'Asti AT 16 224 122784
Robella AT 16 473 123257
Tigliole AT 16 1699 124956
Capriglio AT 16 290 125246
Celle Enomondo AT 16 484 125730
Mombello Monferrato AL 16 1038 126768
Treville AL 17 281 127049
Villamiroglio AL 17 306 127355
Villafranca d'Asti AT 17 3094 130449
Solonghello AL 17 226 130675
Cella Monte AL 17 495 131170
Fubine AL 17 1653 132823
Antignano AT 17 974 133797
Vigliano d'Asti AT 17 835 134632
Passerano Marmorito AT 17 455 135087
Cerro Tanaro AT 17 626 135713
Camagna Monferrato AL 17 528 136241
Cantarana AT 18 982 137223
Cocconato AT 18 1493 138716
Rocchetta Tanaro AT 18 1450 140166
Rosignano Monferrato AL 18 1568 141734
Isola d'Asti AT 18 2071 143805
Ozzano Monferrato AL 18 1436 145241
Quattordio AL 18 1637 146878
Montaldo Scarampi AT 18 755 147633
Brozolo TO 18 471 148104
Montegrosso d'Asti AT 19 2344 150448
Cuccaro Monferrato AL 19 340 150788
Moncestino AL 19 213 151001
Gabiano AL 19 1167 152168
Conzano AL 19 979 153147
San Paolo Solbrito AT 19 1208 154355
Pino d'Asti AT 20 230 154585
Pontestura AL 20 1488 156073
Belveglio AT 20 350 156423
Mombercelli AT 20 2259 158682

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km N of Asti (76202 inhabitants)
33 Km W of Alessandria (93943 inhabitants)
42 Km E of Moncalieri (57294 inhabitants)
43 Km E of Torino (890529 inhabitants)
60 Km SW of Novara (104380 inhabitants)
63 Km SW of Vigevano (63310 inhabitants)
77 Km W of Pavia (72576 inhabitants)
79 Km N of Savona (61345 inhabitants)
84 Km NE of Cuneo (56081 inhabitants)
86 Km NW of Genova (586655 inhabitants)
86 Km SW of Busto Arsizio (83106 inhabitants)
87 Km SW of Legnano (60262 inhabitants)
87 Km SW of Gallarate (53343 inhabitants)
88 Km SW of Rho (50434 inhabitants)
93 Km SW of Milano (1345851 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 1.9 2012-11-20
01:33:57		 44.98 8.2083 26 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 2595291
Bulletin
Rev1000 		ML 2.0 2012-11-20
01:33:57		 44.9892 8.2158 28 2014-09-19
08:14:18		 Bollettino Sismico Italiano INGV 2951181
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-11-20 01:33:57 ± 0.11
Latitude 44.9892 ± 0.0054
Longitude 8.2158 ± 0.0127
Depth (km) 28 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 2951181

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 937
Semi-minor axis of confidence ellipse (meter) 336
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 96
Circular confidence region, given by single value of horizontal uncertainty (meter) 940.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 113
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.16997
Epicentral distance of station farthest from the epicenter (degree) 1.12775
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 2951181
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2014-09-18 12:44:37

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 2595291
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2012-11-20 01:45:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
CH.MUGIO.HHZ. 2012-11-20T01:34:32.38 1.0 undecidable manual S 32 121.7892 54 0.08 22
CH.MMK.HHZ. 2012-11-20T01:34:31.57 0.6 undecidable manual S 351 119.3916 54 -0.2 45
IV.VARE.HHZ. 2012-11-20T01:34:29.59 1.0 undecidable manual S 24 106.6155 100 1.09 16
GU.ENR.HHZ. 2012-11-20T01:34:28.37 1.0 undecidable manual S 217 105.3168 100 0.19 23
GU.SATI.HHZ. 2012-11-20T01:34:27.82 1.0 undecidable manual S 345 101.9202 101 0.53 21
IV.DOI.HHZ. 2012-11-20T01:34:25.37 1.0 undecidable manual S 235 93.4398 102 0.32 23
GU.CIRO.HHZ. 2012-11-20T01:34:23.12 0.6 undecidable manual S 324 84.7485 103 0.34 46
GU.BHB.HHZ. 2012-11-20T01:34:20.65 1.0 undecidable manual S 257 76.7676 105 -0.06 25
GU.RSP.HHZ. 2012-11-20T01:34:20.78 1.0 undecidable manual S 284 76.5678 105 0.12 25
GU.TRAV.HHZ. 2012-11-20T01:34:19.49 0.6 undecidable manual S 328 68.6757 106 0.86 39
IV.IMI.HHZ. 2012-11-20T01:34:18.19 0.3 undecidable manual P 192 122.3886 54 0.66 58
CH.MUGIO.HHZ. 2012-11-20T01:34:17.36 0.1 undecidable manual P 32 121.7892 54 -0.11 91
GU.REMY.HHZ. 2012-11-20T01:34:17.74 0.1 undecidable manual P 319 125.1747 54 -0.14 90
GU.STV.HHZ. 2012-11-20T01:34:16.14 0.1 undecidable manual P 221 108.3138 100 0.6 83
MN.BNI.HHZ. 2012-11-20T01:34:16.90 1.0 undecidable manual P 274 120.7902 54 -0.44 21
CH.MMK.HHZ. 2012-11-20T01:34:16.68 0.6 undecidable manual P 351 119.3916 54 -0.48 42
GU.ENR.HHZ. 2012-11-20T01:34:15.43 0.1 undecidable manual P 217 105.3168 100 0.34 89
IV.VARE.HHZ. 2012-11-20T01:34:15.71 0.1 undecidable manual P 24 106.6155 100 0.44 86
GU.SATI.HHZ. 2012-11-20T01:34:14.68 0.1 undecidable manual P 345 101.9202 101 0.11 93
GU.RORO.HHZ. 2012-11-20T01:34:13.62 0.1 undecidable manual P 187 98.0241 101 -0.35 89
IV.DOI.HHZ. 2012-11-20T01:34:13.47 0.1 undecidable manual P 235 93.4398 102 0.19 94
GU.LSD.HHZ. 2012-11-20T01:34:13.54 0.1 undecidable manual P 302 99.3228 101 -0.63 83
GU.CIRO.HHZ. 2012-11-20T01:34:11.67 0.3 undecidable manual P 324 84.7485 103 -0.3 70
GU.RSP.HHZ. 2012-11-20T01:34:10.19 0.1 undecidable manual P 284 76.5678 105 -0.55 89
GU.BHB.HHZ. 2012-11-20T01:34:10.58 0.1 undecidable manual P 257 76.7676 105 -0.2 97
GU.TRAV.HHZ. 2012-11-20T01:34:09.70 0.1 undecidable manual P 328 68.6757 106 0.13 99
GU.ROTM.HHZ. 2012-11-20T01:34:07.12 0.6 undecidable manual S 145 18.87 142 -0.07 54
GU.ROTM.HHZ. 2012-11-20T01:34:02.49 0.1 undecidable manual P 145 18.87 142 -0.48 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.BHB.HHE. ML:1.9 0.00011255000000000001 0.48 AML other m 2012-11-20T01:34:23.70
GU.BHB.HHN. ML:2.0 0.00013700000000000002 0.58 AML other m 2012-11-20T01:34:23.92
GU.CIRO.HHE. ML:1.9 0.0001001 0.3 AML other m 2012-11-20T01:34:23.72
GU.CIRO.HHN. ML:2.0 0.00011645 0.78 AML other m 2012-11-20T01:34:23.47
IV.DOI.HHN. ML:2.1 0.000124 0.82 AML other m 2012-11-20T01:34:26.10
IV.DOI.HHE. ML:2.0 0.00011285 1.48 AML other m 2012-11-20T01:34:27.20
GU.ENR.HHE. ML:2.0 0.000091 0.52 AML other m 2012-11-20T01:34:32.90
GU.ENR.HHN. ML:1.8 0.00005755 1.22 AML other m 2012-11-20T01:34:33.13
GU.FINB.HHE. ML:2.0 0.00009585 0.34 AML other m 2012-11-20T01:34:27.18
GU.FINB.HHN. ML:2.0 0.00010350000000000001 0.28 AML other m 2012-11-20T01:34:29.87
CH.MMK.HHE. ML:1.8 0.00004085 1.5 AML other m 2012-11-20T01:34:34.28
CH.MMK.HHN. ML:1.8 0.00004385 1.46 AML other m 2012-11-20T01:34:34.12
CH.MUGIO.HHN. ML:2.3 0.0001451 0.32 AML other m 2012-11-20T01:34:34.62
CH.MUGIO.HHE. ML:2.2 0.00011 0.54 AML other m 2012-11-20T01:34:35.27
GU.PCP.HHE. ML:2.0 0.0002 0.3 AML other m 2012-11-20T01:34:15.31
GU.PCP.HHN. ML:1.9 0.00015 1.06 AML other m 2012-11-20T01:34:15.32
IV.QLNO.HHN. ML:1.8 0.00009325 1.06 AML other m 2012-11-20T01:34:27.39
IV.QLNO.HHE. ML:1.8 0.000084 0.48 AML other m 2012-11-20T01:34:20.17
GU.REMY.HHE. ML:2.0 0.00006385000000000001 1.58 AML other m 2012-11-20T01:34:43.07
GU.REMY.HHN. ML:2.0 0.0000592 1.58 AML other m 2012-11-20T01:34:46.42
GU.RORO.HHN. ML:1.8 0.000056099999999999995 0.26 AML other m 2012-11-20T01:34:29.06
GU.RORO.HHE. ML:1.9 0.00007535 0.7 AML other m 2012-11-20T01:34:29.11
GU.ROTM.HHN. ML:2.9 0.003805 0.4 AML other m 2012-11-20T01:34:07.48
GU.ROTM.HHE. ML:2.9 0.003255 0.54 AML other m 2012-11-20T01:34:07.40
GU.RSP.HHE. ML:1.7 0.00007290000000000001 1.58 AML other m 2012-11-20T01:34:26.25
GU.RSP.HHN. ML:1.6 0.0000603 1.26 AML other m 2012-11-20T01:34:27.54
GU.SATI.HHN. ML:2.1 0.0001275 0.6 AML other m 2012-11-20T01:34:28.96
GU.SATI.HHE. ML:2.2 0.000157 0.38 AML other m 2012-11-20T01:34:28.21
GU.STV.HHN. ML:1.7 0.0000389 1.48 AML other m 2012-11-20T01:34:33.68
GU.STV.HHE. ML:1.7 0.0000447 0.68 AML other m 2012-11-20T01:34:32.83
GU.TRAV.HHN. ML:1.9 0.000117 0.7 AML other m 2012-11-20T01:34:20.84
GU.TRAV.HHE. ML:2.0 0.0001575 1.14 AML other m 2012-11-20T01:34:19.60
MN.TUE.HHN. ML:2.1 0.00004625 0.66 AML other m 2012-11-20T01:34:51.02
MN.TUE.HHE. ML:2.3 0.00006565 0.32 AML other m 2012-11-20T01:34:51.85
IV.VARE.HHE. ML:2.1 0.00011879999999999999 0.46 AML other m 2012-11-20T01:34:30.67
IV.VARE.HHN. ML:2.4 0.000193 0.4 AML other m 2012-11-20T01:34:31.38
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
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