Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 12-07-2012 and time 13:42:22 (Italy) in region 1 km W Serravalle Scrivia (AL)

A magnitude ML 2.3 earthquake occured in region: 1 km W Serravalle Scrivia (AL), on

  • 12-07-2012 11:42:22 (UTC)
  • 12-07-2012 13:42:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.7230, 8.8510 at 9 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
Serravalle Scrivia AL 1 6128 6128
Stazzano AL 2 2486 8614
Vignole Borbera AL 4 2182 10796
Arquata Scrivia AL 5 6409 17205
Cassano Spinola AL 5 1731 18936
Gavi AL 5 4614 23550
Sardigliano AL 6 406 23956
Tassarolo AL 6 672 24628
Novi Ligure AL 7 28154 52782
Gavazzana AL 7 180 52962
Carrosio AL 7 510 53472
Borghetto di Borbera AL 8 1966 55438
Pasturana AL 9 1318 56756
San Cristoforo AL 9 608 57364
Sant'Agata Fossili AL 9 425 57789
Parodi Ligure AL 9 715 58504
Grondona AL 9 510 59014
Francavilla Bisio AL 9 531 59545
Bosio AL 10 1227 60772
Pozzolo Formigaro AL 10 4775 65547
Carezzano AL 10 431 65978
Castellania AL 11 90 66068
Villalvernia AL 11 955 67023
Montaldeo AL 11 265 67288
Voltaggio AL 11 738 68026
Paderna AL 11 220 68246
Mornese AL 12 737 68983
Isola del Cantone GE 12 1540 70523
Costa Vescovato AL 12 335 70858
Castelletto d'Orba AL 12 2047 72905
Basaluzzo AL 13 2087 74992
Capriata d'Orba AL 13 1904 76896
Avolasca AL 13 294 77190
Spineto Scrivia AL 13 337 77527
Casaleggio Boiro AL 14 372 77899
Garbagna AL 14 696 78595
Carbonara Scrivia AL 14 1122 79717
Lerma AL 15 869 80586
Villaromagnano AL 15 715 81301
Fraconalto AL 15 336 81637
Fresonara AL 15 731 82368
Silvano d'Orba AL 15 1988 84356
Cerreto Grue AL 15 323 84679
Roccaforte Ligure AL 15 136 84815
Ronco Scrivia GE 15 4417 89232
Montegioco AL 15 313 89545
Cantalupo Ligure AL 15 527 90072
Predosa AL 15 2048 92120
Rocchetta Ligure AL 16 200 92320
Dernice AL 17 185 92505
Rocca Grimalda AL 17 1512 94017
Sarezzano AL 17 1171 95188
Tagliolo Monferrato AL 17 1581 96769
Casasco AL 17 129 96898
Albera Ligure AL 17 325 97223
Bosco Marengo AL 18 2457 99680
Montemarzino AL 18 341 100021
Brignano-Frascata AL 18 456 100477
San Sebastiano Curone AL 18 583 101060
Belforte Monferrato AL 18 515 101575
Busalla GE 19 5563 107138
Ovada AL 19 11477 118615
Frugarolo AL 19 1968 120583
Berzano di Tortona AL 19 157 120740
Mongiardino Ligure AL 19 165 120905
Tortona AL 19 27437 148342
Momperone AL 20 223 148565
Carpeneto AL 20 977 149542

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km SE of Alessandria (93943 inhabitants)
35 Km N of Genova (586655 inhabitants)
55 Km E of Asti (76202 inhabitants)
55 Km NE of Savona (61345 inhabitants)
57 Km SW of Pavia (72576 inhabitants)
66 Km S of Vigevano (63310 inhabitants)
76 Km W of Piacenza (102191 inhabitants)
82 Km S of Novara (104380 inhabitants)
87 Km SW of Milano (1345851 inhabitants)
91 Km S of Rho (50434 inhabitants)
95 Km SW of Sesto San Giovanni (81608 inhabitants)
97 Km E of Moncalieri (57294 inhabitants)
97 Km S of Legnano (60262 inhabitants)
97 Km SW of Cinisello Balsamo (75078 inhabitants)
99 Km S of Busto Arsizio (83106 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 2.2 2012-07-12
11:42:22		 44.6975 8.8588 10 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 1820901
Bulletin
Rev1000 		ML 2.3 2012-07-12
11:42:22		 44.7233 8.8508 9 2014-09-19
08:14:18		 Bollettino Sismico Italiano INGV 3000961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2012-07-12 11:42:22 ± 0.24
Latitude 44.7233 ± 0.0045
Longitude 8.8508 ± 0.0051
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 3000961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 540
Semi-minor axis of confidence ellipse (meter) 69
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 193
Circular confidence region, given by single value of horizontal uncertainty (meter) 540.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 82
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.28329
Epicentral distance of station farthest from the epicenter (degree) 2.11520
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 3000961
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2014-09-18 12:44:43

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 1820901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2012-07-12 11:53:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
RD.ORT2.BHZ. 2012-07-12T11:43:24.67 0.1 undecidable manual S 276 234.7872 38 -0.12 49
GU.PZZ.HHZ. 2012-07-12T11:43:02.21 0.1 undecidable manual S 261 139.0608 50 0 83
GU.RSP.HHZ. 2012-07-12T11:43:00.56 0.1 undecidable manual S 291 133.1667 50 -0.06 83
GU.STV.HHZ. 2012-07-12T11:43:00.78 0.3 undecidable manual S 247 131.7681 50 0.51 57
CH.MUGIO.HHZ. 2012-07-12T11:43:00.72 0.1 undecidable manual S 6 133.7661 50 -0.08 83
GU.NEGI.HHZ. 2012-07-12T11:43:00.28 0.1 undecidable manual S 224 133.3665 50 -0.4 77
GU.ENR.HHZ. 2012-07-12T11:42:59.01 0.1 undecidable manual S 245 125.874 50 0.32 80
GU.TRAV.HHZ. 2012-07-12T11:42:58.07 0.1 undecidable manual S 316 122.988 50 0.15 83
RD.ORT2.BHZ. 2012-07-12T11:42:58.67 0.1 undecidable manual P 276 234.7872 38 0.34 47
IV.PLMA.HHZ. 2012-07-12T11:42:54.19 0.3 undecidable manual S 133 109.113 50 -0.01 66
IV.MONC.HHZ. 2012-07-12T11:42:47.15 0.1 undecidable manual S 299 82.3509 50 0.08 92
GU.STV.HHZ. 2012-07-12T11:42:44.55 0.1 undecidable manual P 247 131.7681 50 0.38 78
GU.FINB.HHZ. 2012-07-12T11:42:44.50 0.1 undecidable manual S 215 73.4709 50 -0.19 91
GU.NEGI.HHZ. 2012-07-12T11:42:44.16 0.1 undecidable manual P 224 133.3665 50 -0.25 80
GU.PZZ.HHZ. 2012-07-12T11:42:44.44 0.1 undecidable manual P 261 139.0608 50 -0.85 65
CH.MUGIO.HHZ. 2012-07-12T11:42:43.64 0.1 undecidable manual P 6 133.7661 50 -0.83 66
IV.MSSA.HHZ. 2012-07-12T11:42:43.30 0.3 undecidable manual S 130 69.375 50 -0.31 67
GU.ENR.HHZ. 2012-07-12T11:42:43.43 0.1 undecidable manual P 245 125.874 50 0.17 82
GU.RSP.HHZ. 2012-07-12T11:42:43.36 0.1 undecidable manual P 291 133.1667 50 -1.01 61
GU.TRAV.HHZ. 2012-07-12T11:42:42.97 0.1 undecidable manual P 316 122.988 50 0.16 83
IV.PLMA.HHZ. 2012-07-12T11:42:40.50 0.1 undecidable manual P 133 109.113 50 -0.17 85
IV.BOB.HHZ. 2012-07-12T11:42:37.73 0.3 undecidable manual S 84 47.3193 50 0.02 74
IV.MONC.HHZ. 2012-07-12T11:42:36.75 0.1 undecidable manual P 299 82.3509 50 0.2 89
GU.ROTM.HHZ. 2012-07-12T11:42:36.24 0.1 undecidable manual S 290 41.625 50 0.04 100
GU.GORR.HHZ. 2012-07-12T11:42:35.07 0.1 undecidable manual S 110 37.1295 50 0.07 100
GU.FINB.HHZ. 2012-07-12T11:42:35.35 0.1 undecidable manual P 215 73.4709 50 0.17 91
IV.MSSA.HHZ. 2012-07-12T11:42:34.91 0.1 undecidable manual P 130 69.375 50 0.36 89
GU.PCP.HHZ. 2012-07-12T11:42:33.47 0.3 undecidable manual S 230 31.4463 50 -0.01 77
IV.BOB.HHZ. 2012-07-12T11:42:31.45 0.1 undecidable manual P 84 47.3193 50 0.31 93
GU.ROTM.HHZ. 2012-07-12T11:42:30.68 0.1 undecidable manual P 290 41.625 50 0.41 92
GU.GORR.HHZ. 2012-07-12T11:42:29.74 0.1 undecidable manual P 110 37.1295 50 0.16 98
GU.PCP.HHZ. 2012-07-12T11:42:28.56 0.1 undecidable manual P 230 31.4463 50 -0.14 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BOB.HHN. ML:2.0 0.000272 0.74 AML other m 2012-07-12T11:42:42.53
IV.BOB.HHE. ML:2.1 0.0003395 1.26 AML other m 2012-07-12T11:42:42.63
GU.ENR.HHN. ML:2.3 0.00015150000000000002 0.38 AML other m 2012-07-12T11:43:00.42
GU.ENR.HHE. ML:2.3 0.00014495 0.66 AML other m 2012-07-12T11:43:01.63
GU.FINB.HHE. ML:2.8 0.0010175000000000002 0.36 AML other m 2012-07-12T11:42:44.84
GU.FINB.HHN. ML:1.1 0.000020900000000000003 0.34 AML other m 2012-07-12T11:42:46.42
GU.GORR.HHN. ML:2.2 0.0005940000000000001 0.86 AML other m 2012-07-12T11:42:35.93
GU.GORR.HHE. ML:2.2 0.000532 0.38 AML other m 2012-07-12T11:42:37.19
IV.MONC.HHE. ML:2.7 0.000671 0.32 AML other m 2012-07-12T11:42:54.64
IV.MONC.HHN. ML:2.6 0.000558 0.38 AML other m 2012-07-12T11:42:55.58
IV.MSSA.HHE. ML:2.0 0.00016499999999999997 1.56 AML other m 2012-07-12T11:42:44.36
IV.MSSA.HHN. ML:2.0 0.00017999999999999998 0.84 AML other m 2012-07-12T11:42:47.18
GU.NEGI.HHN. ML:2.3 0.000127 1.56 AML other m 2012-07-12T11:43:06.08
GU.NEGI.HHE. ML:2.4 0.00014050000000000003 1.58 AML other m 2012-07-12T11:43:06.83
RD.ORT2.BHN. ML:2.1 0.00002555 0.56 AML other m 2012-07-12T11:43:28.83
RD.ORT2.BHE. ML:2.0 0.00002275 1.28 AML other m 2012-07-12T11:43:37.63
GU.ROTM.HHN. ML:3.1 0.004465 0.4 AML other m 2012-07-12T11:42:38.24
GU.ROTM.HHE. ML:2.7 0.0017749999999999999 0.9 AML other m 2012-07-12T11:42:38.38
GU.RSP.HHN. ML:2.0 0.00007095 1.26 AML other m 2012-07-12T11:43:04.35
GU.RSP.HHE. ML:2.1 0.00007465 1.12 AML other m 2012-07-12T11:43:07.44
GU.STV.HHN. ML:2.2 0.0000981 0.36 AML other m 2012-07-12T11:43:05.77
GU.STV.HHE. ML:2.1 0.00007545 0.84 AML other m 2012-07-12T11:43:05.34
GU.TRAV.HHN. ML:2.5 0.00023449999999999998 0.76 AML other m 2012-07-12T11:42:59.24
GU.TRAV.HHE. ML:2.7 0.0003665 0.78 AML other m 2012-07-12T11:42:58.87
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in miniseed + resp format Download