Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 1.0 on date 14-07-2022 and time 09:31:53 (UTC) in region Costa Ligure centro occidentale (Savona)

A magnitude ML 1.0 (quarry blast) earthquake occured in region: Costa Ligure centro occidentale (Savona), on

  • 14-07-2022 09:31:53 (UTC)
  • 14-07-2022 11:31:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.2320, 8.4320 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
Spotorno SV 1 3803 3803
Bergeggi SV 2 1129 4932
Noli SV 3 2736 7668
Vado Ligure SV 4 8336 16004
Vezzi Portio SV 6 809 16813
Quiliano SV 7 7232 24045
Orco Feglino SV 9 890 24935
Savona SV 9 61345 86280
Finale Ligure SV 10 11711 97991
Calice Ligure SV 11 1730 99721
Albissola Marina SV 12 5487 105208
Rialto SV 13 564 105772
Mallare SV 13 1146 106918
Borgio Verezzi SV 13 2205 109123
Altare SV 13 2108 111231
Albisola Superiore SV 14 10163 121394
Tovo San Giacomo SV 14 2582 123976
Pietra Ligure SV 15 8992 132968
Magliolo SV 15 974 133942
Celle Ligure SV 15 5237 139179
Giustenice SV 16 977 140156
Pallare SV 16 923 141079
Bormida SV 17 387 141466
Loano SV 18 11407 152873
Carcare SV 18 5587 158460
Varazze SV 18 13251 171711
Stella SV 19 3009 174720
Osiglia SV 19 444 175164
Borghetto Santo Spirito SV 20 4948 180112
Boissano SV 20 2492 182604

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km SW of Savona (61345 inhabitants)
45 Km W of Genova (586655 inhabitants)
69 Km NE of Sanremo (54807 inhabitants)
72 Km E of Cuneo (56081 inhabitants)
76 Km S of Asti (76202 inhabitants)
77 Km S of Alessandria (93943 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 1.0 2022-07-14
09:31:53		 44.2323 8.4315 1 2023-01-31
19:03:58		 Bollettino Sismico Italiano INGV 113304901
Reviewed
Rev100 		ML 1.0 2022-07-14
09:31:54		 44.2442 8.4377 5 2022-07-14
09:44:41		 Sala Sismica INGV-Roma 107247511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-07-14 09:31:53 ± 0.22
Latitude 44.2323 ± 0.0189
Longitude 8.4315 ± 0.0188
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 113304901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2290
Semi-minor axis of confidence ellipse (meter) 1100
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 332
Circular confidence region, given by single value of horizontal uncertainty (meter) 2290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 163
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.44
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.02792
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 113304901
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-01-04 15:40:36

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 107247511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-07-14 09:44:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IT.RMMM.HGZ. 2022-07-14T09:33:47.85 3.0 undecidable manual Sg 10.34 0
IV.TERO.HHZ. 2022-07-14T09:33:45.87 3.0 undecidable manual Sn -0.2 0
OX.CIMO.HHZ. 2022-07-14T09:33:43.17 3.0 undecidable manual Sg 12.02 0
IV.BRES.EHZ. 2022-07-14T09:33:38.15 3.0 undecidable manual Sg 10.18 0
IV.SCHR.EHZ. 2022-07-14T09:33:37.34 3.0 undecidable manual Pn 0.89 0
IV.VAGA.HHZ. 2022-07-14T09:33:15.19 3.0 undecidable manual Pn 4.19 0
MN.TRI.HHZ. 2022-07-14T09:33:10.92 3.0 undecidable manual Pg 14.68 0
IV.RIBO.EHZ.01 2022-07-14T09:33:07.26 3.0 undecidable manual Sg 5.21 0
IV.SFI.EHZ. 2022-07-14T09:33:07.57 3.0 undecidable manual Sn 1.11 0
IV.RMP.HHZ. 2022-07-14T09:33:01.72 3.0 negative manual Pg 6.57 0
IV.CSNT.HHZ. 2022-07-14T09:32:58.50 3.0 undecidable manual Sn -1.23 0
IT.RMMM.HGZ. 2022-07-14T09:32:58.23 3.0 undecidable manual Pg 6.05 0
IV.BAG8.EHZ. 2022-07-14T09:32:58.32 3.0 undecidable manual Sn 0.67 0
IV.MNTT.EHZ. 2022-07-14T09:32:54.58 3.0 undecidable manual Pn -0.04 0
IV.PE3.EHZ. 2022-07-14T09:32:50.03 3.0 negative manual Pg 8.4 0
IV.AGLI.HHZ. 2022-07-14T09:32:48.19 3.0 undecidable manual Pg 4.05 0
IV.SSFR.HHZ. 2022-07-14T09:32:44.68 3.0 undecidable manual Pn -0.59 0
IV.RIBO.EHZ.01 2022-07-14T09:32:38.41 3.0 undecidable manual Pn 6.15 0
GU.BHB.HHZ. 2022-07-14T09:32:13.45 0.6 undecidable manual P 306 114.0969 50 -0.85 36
IV.MSSA.HHZ. 2022-07-14T09:32:10.96 0.3 undecidable manual P 83 86.7465 50 0.87 56
GU.ENR.HHZ. 2022-07-14T09:32:08.68 0.3 undecidable manual P 270 80.5638 50 -0.46 66
FR.SAOF.HHE.00 2022-07-14T09:32:08.40 0.3 undecidable manual P 249 75.1692 50 0.1 72
GU.GORR.HHZ. 2022-07-14T09:32:08.92 0.3 undecidable manual P 58 79.8645 50 -0.11 72
GU.MGRO.HHN. 2022-07-14T09:32:04.15 0.3 undecidable manual P 247 53.9016 91 -0.6 67
GU.RNCA.HHE. 2022-07-14T09:32:03.35 0.3 undecidable manual P 57 49.0176 91 -0.41 71
GU.PCP.HHZ. 2022-07-14T09:32:00.84 0.3 undecidable manual P 15 35.4423 91 -0.21 76
GU.RORO.HHZ. 2022-07-14T09:32:00.30 0.3 undecidable manual P 246 31.9458 91 -0.05 79
GU.CANO.HHZ. 2022-07-14T09:31:57.67 0.1 undecidable manual P 260 15.6732 92 0.58 96
IV.QLNO.HHZ. 2022-07-14T09:31:56.87 0.1 undecidable manual P 326 12.2766 92 0.47 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.QLNO.HHE. ML:1.3 0.000279 0.7 AML other m 2022-07-14T09:31:58.93
IV.QLNO.HHN. ML:1.1 0.0001895 0.82 AML other m 2022-07-14T09:31:59.82
GU.CANO.HHE. ML:1.5 0.000332 1.72 AML other m 2022-07-14T09:32:00.87
GU.CANO.HHN. ML:1.4 0.0002985 0.92 AML other m 2022-07-14T09:32:01.28
GU.PCP.HHE. ML:0.9 0.00003083637 0.4608 AML other m 2022-07-14T09:32:05.86
GU.PCP.HHN. ML:0.8 0.000023449999999999997 0.16 AML other m 2022-07-14T09:32:05.63
GU.ENR.HHE. ML:0.9 0.00001073976 0.5984 AML other m 2022-07-14T09:32:18.48
GU.ENR.HHN. ML:0.9 0.0000097842865 0.4224 AML other m 2022-07-14T09:32:19.47
GU.GORR.HHN. ML:0.6 0.000006425032 0.6176 AML other m 2022-07-14T09:32:19.60
GU.GORR.HHE. ML:0.9 0.000012250000000000001 0.88 AML other m 2022-07-14T09:32:22.73
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