Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 0.6 on date 07-10-2021 and time 14:14:02 (Italy) in region 2 km S Bagnasco (CN)

A magnitude ML 0.6 (quarry blast) earthquake occured in region: 2 km S Bagnasco (CN), on

  • 07-10-2021 12:14:02 (UTC)
  • 07-10-2021 14:14:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.2860, 8.0410 at 0 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Event type: quarry blast.

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
Bagnasco CN 2 1035 1035
Massimino SV 3 113 1148
Battifollo CN 5 219 1367
Priola CN 5 701 2068
Lisio CN 5 201 2269
Viola CN 6 391 2660
Nucetto CN 6 430 3090
Perlo CN 6 116 3206
Scagnello CN 7 194 3400
Calizzano SV 8 1475 4875
Monasterolo Casotto CN 9 89 4964
Garessio CN 10 3244 8208
Pamparato CN 10 302 8510
Mombasiglio CN 10 609 9119
Murialdo SV 10 841 9960
Castelnuovo di Ceva CN 11 110 10070
Priero CN 11 529 10599
Ceva CN 11 5782 16381
Roburent CN 12 495 16876
Bardineto SV 13 756 17632
Osiglia SV 13 444 18076
Sale delle Langhe CN 13 486 18562
Sale San Giovanni CN 13 183 18745
Montezemolo CN 13 259 19004
Torre Mondovì CN 13 498 19502
Lesegno CN 14 794 20296
Montaldo di Mondovì CN 14 557 20853
San Michele Mondovì CN 15 2003 22856
Roascio CN 15 97 22953
Roccavignale SV 15 752 23705
Bormida SV 15 387 24092
Millesimo SV 16 3383 27475
Torresina CN 16 52 27527
Paroldo CN 17 211 27738
Castellino Tanaro CN 17 312 28050
Vicoforte CN 17 3136 31186
Niella Tanaro CN 17 1046 32232
Erli SV 17 245 32477
Camerana CN 17 631 33108
Saliceto CN 18 1323 34431
Cengio SV 18 3563 37994
Igliano CN 18 74 38068
Briaglia CN 18 318 38386
Cosseria SV 18 1105 39491
Plodio SV 18 650 40141
Castelvecchio di Rocca Barbena SV 18 145 40286
Ormea CN 18 1617 41903
Monastero di Vasco CN 18 1297 43200
Frabosa Soprana CN 19 759 43959
Nasino SV 19 207 44166
Cigliè CN 19 190 44356
Rocca Cigliè CN 19 142 44498
Marsaglia CN 19 245 44743
Pallare SV 19 923 45666
Frabosa Sottana CN 19 1497 47163
Castelbianco SV 19 330 47493
Magliolo SV 20 974 48467
Alto CN 20 128 48595
Caprauna CN 20 104 48699

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km W of Savona (61345 inhabitants)
41 Km E of Cuneo (56081 inhabitants)
56 Km NE of Sanremo (54807 inhabitants)
70 Km S of Asti (76202 inhabitants)
72 Km W of Genova (586655 inhabitants)
83 Km SW of Alessandria (93943 inhabitants)
84 Km SE of Moncalieri (57294 inhabitants)
92 Km SE of Torino (890529 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
Bulletin
Rev1000 		ML 0.6 2021-10-07
12:14:02		 44.2862 8.0407 1 2022-03-30
13:04:28		 Bollettino Sismico Italiano INGV 99534961
Reviewed
Rev100 		ML 0.7 2021-10-07
12:14:02		 44.2773 8.039 5 2021-10-07
12:39:07		 Sala Sismica INGV-Roma 96318921
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-07 12:14:02 ± 0.08
Latitude 44.2862 ± 0.0063
Longitude 8.0407 ± 0.0050
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type quarry blast
Origin ID 99534961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 690
Semi-minor axis of confidence ellipse (meter) 370
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 339
Circular confidence region, given by single value of horizontal uncertainty (meter) 690.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 162
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.44157
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 99534961
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-10 14:51:40

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 96318921
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-07 12:39:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.COLB.HHZ. 2021-10-07T12:15:45.84 3.0 undecidable manual Pg 15.9 0
IV.TST02.HHZ. 2021-10-07T12:15:41.22 3.0 undecidable manual Pg 18.41 0
IV.CDRU.HHZ. 2021-10-07T12:15:37.39 3.0 undecidable manual Pn -4.83 0
IV.FIR.HHZ. 2021-10-07T12:15:20.66 3.0 undecidable manual Sg 4.38 0
TV.SU26.HHZ. 2021-10-07T12:15:18.42 3.0 undecidable manual Pn -4.32 0
IV.LPEL.HHZ. 2021-10-07T12:15:16.95 3.0 positive manual Pn -3.64 0
IV.MNTT.EHZ. 2021-10-07T12:15:08.14 3.0 positive manual Pn -1.16 0
IV.VIVA.HHZ. 2021-10-07T12:15:06.37 3.0 negative manual Pn -4.41 0
IV.CSP1.EHZ. 2021-10-07T12:15:04.34 3.0 undecidable manual Pn -1.12 0
IV.FREG.EHZ. 2021-10-07T12:15:00.10 3.0 negative manual Pn 2.15 0
IV.MURB.HNZ. 2021-10-07T12:14:53.97 3.0 negative manual Pn -4.26 0
IV.BRSN.HNZ. 2021-10-07T12:14:51.43 3.0 negative manual Pn 0.54 0
IV.MOCL.EHZ. 2021-10-07T12:14:48.46 3.0 undecidable manual Pg 5.93 0
IV.ZEN8.EHZ. 2021-10-07T12:14:46.51 3.0 negative manual Pg 4.35 0
IV.IMOL.HNZ. 2021-10-07T12:14:46.56 3.0 positive manual Pn -0.96 0
IV.RIBO.EHZ.01 2021-10-07T12:14:43.75 3.0 undecidable manual Pn -3.13 0
IV.EUCT.HNZ. 2021-10-07T12:14:27.41 3.0 undecidable manual P 1.23 0
IV.PCN.EHZ. 2021-10-07T12:14:27.37 3.0 negative manual P -2.25 0
IV.SARZ.HNZ. 2021-10-07T12:14:27.67 3.0 undecidable manual S -6.26 0
IV.MSSA.HHZ. 2021-10-07T12:14:23.22 3.0 undecidable manual P -2.43 0
GU.ROTM.HHZ. 2021-10-07T12:14:13.43 3.0 positive manual P -1.01 0
GU.PCP.HHE. 2021-10-07T12:14:12.13 0.6 undecidable manual P 55 49.0176 91 -0.05 47
GU.MGRO.HHE. 2021-10-07T12:14:08.75 0.3 undecidable manual P 214 32.745 91 -0.17 71
IV.QLNO.HHZ. 2021-10-07T12:14:07.21 0.3 undecidable manual P 80 24.5532 91 -0.08 73
GU.CANO.HHZ. 2021-10-07T12:14:06.07 0.1 undecidable manual P 119 17.871 92 0.12 98
GU.RORO.HHZ. 2021-10-07T12:14:06.24 0.1 undecidable manual P 174 19.3695 91 -0.01 100
GU.GBOS.HHZ. 2021-10-07T12:14:05.81 0.1 undecidable manual P 253 16.6722 92 0.1 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.QLNO.HHE. ML:0.5 0.00002032304 0.2784 AML other m 2021-10-07T12:14:07.41
GU.GBOS.HHN. ML:0.3 0.000018632325000000003 1.2224 AML other m 2021-10-07T12:14:08.24
GU.CANO.HHN. ML:1.0 0.00008425481499999999 0.2784 AML other m 2021-10-07T12:14:08.42
GU.GBOS.HHE. ML:0.2 0.000016527364999999998 1.184 AML other m 2021-10-07T12:14:08.39
IV.QLNO.HHN. ML:0.7 0.00003447782 1.0016 AML other m 2021-10-07T12:14:08.90
GU.RORO.HHE. ML:1.2 0.000132860685 0.144 AML other m 2021-10-07T12:14:08.38
GU.CANO.HHE. ML:0.6 0.000040710355000000006 1.04 AML other m 2021-10-07T12:14:08.68
GU.RORO.HHN. ML:0.4 0.00001799646 1.0176 AML other m 2021-10-07T12:14:09.10
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