Earthquake (quarry blast) with magnitude of ML 1.2 on date 10-03-2017 and time 11:57:21 (Italy) in region Costa Ligure centro occidentale (Savona)

A magnitude ML 1.2 (quarry blast) earthquake occured in region: Costa Ligure centro occidentale (Savona), on

  • 10-03-2017 10:57:21 (UTC)
  • 10-03-2017 11:57:21 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.22, 8.46 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.

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 3 3803 3803
Noli SV 3 2736 6539
Bergeggi SV 4 1129 7668
Vado Ligure SV 6 8336 16004
Vezzi Portio SV 8 809 16813
Quiliano SV 9 7232 24045
Finale Ligure SV 10 11711 35756
Orco Feglino SV 10 890 36646
Savona SV 10 61345 97991
Calice Ligure SV 13 1730 99721
Albissola Marina SV 13 5487 105208
Borgio Verezzi SV 14 2205 107413
Rialto SV 14 564 107977
Albisola Superiore SV 15 10163 118140
Mallare SV 15 1146 119286
Tovo San Giacomo SV 16 2582 121868
Pietra Ligure SV 16 8992 130860
Celle Ligure SV 16 5237 136097
Altare SV 16 2108 138205
Magliolo SV 17 974 139179
Giustenice SV 17 977 140156
Loano SV 18 11407 151563
Varazze SV 19 13251 164814
Pallare SV 19 923 165737
Bormida SV 19 387 166124

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km S of Savona (61345 inhabitants)
44 Km W of Genova (586655 inhabitants)
69 Km NE of Sanremo (54807 inhabitants)
75 Km E of Cuneo (56081 inhabitants)
79 Km S of Alessandria (93943 inhabitants)
79 Km S of Asti (76202 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
Rev 1000 ML 1.2 2017-03-10
10:57:21
44.22 8.46 0 2018-01-10
09:55:04
Bollettino Sismico Italiano INGV 50224891
Rev 100 ML 1.2 2017-03-10
10:57:21
44.25 8.42 8 2017-03-10
11:28:51
Sala Sismica INGV-Roma 42193351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-03-10 10:57:21 ± 0.38
Latitude 44.22 ± 0.02
Longitude 8.46 ± 0.02
Depth (km) 0 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type quarry blast
Origin ID 50224891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3020
Semi-minor axis of confidence ellipse (meter) 1270
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 329
Circular confidence region, given by single value of horizontal uncertainty (meter) 3020
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 197
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.1331
Epicentral distance of station farthest from the epicenter (degree) 0.81029
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 2
Type of magnitude ML
Reference to an origin 50224891
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-09-18 15:35:50

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 2
Type of magnitude ML
Reference to an origin 42193351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-03-10 11:28:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.STV.HHZ. 2017-03-10T10:57:37.91 0.3 undecidable manual P 272 0.8103 50 0.04 67
FR.SAOF.HHZ.00 2017-03-10T10:57:35.46 0.6 undecidable manual P 251 0.688 50 -0.33 43
GU.RNCA.HHE. 2017-03-10T10:57:31.04 0.3 undecidable manual P 54 0.4353 90 0.16 71
GU.GBOS.HHZ. 2017-03-10T10:57:30.31 0.3 undecidable manual P 273 0.4425 90 -0.72 61
GU.PCP.HHZ. 2017-03-10T10:57:28.33 0.1 undecidable manual P 11 0.3301 90 -0.22 96
GU.CANO.HHZ. 2017-03-10T10:57:25.19 0.1 undecidable manual P 267 0.1574 90 0.5 93
IV.QLNO.HHZ. 2017-03-10T10:57:24.35 0.1 undecidable manual P 324 0.1331 90 0.19 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.CANO.HHE. ML:1.6 0.0004015 0.24 AML other m 2017-03-10T10:57:28.20
GU.CANO.HHN. ML:1.3 0.0001785 0.78 AML other m 2017-03-10T10:57:29.37
IV.QLNO.HHE. ML:1 0.0001215 1.34 AML other m 2017-03-10T10:57:27.69
IV.QLNO.HHN. ML:1 0.0001285 0.84 AML other m 2017-03-10T10:57:27.04
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download