Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 01-10-2023 and time 09:47:39 (Italy) in region 3 km W Salaparuta (TP)

A magnitude ML 2.3 earthquake occured in region: 3 km W Salaparuta (TP), on

  • 01-10-2023 07:47:39 (UTC)
  • 01-10-2023 09:47:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7480, 12.9780 at 4 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Salaparuta TP 3 1696 1696
Montevago AG 5 3006 4702
Poggioreale TP 5 1494 6196
Santa Margherita di Belice AG 7 6363 12559
Partanna TP 8 10607 23166
Santa Ninfa TP 9 5043 28209
Gibellina TP 12 4115 32324
Sambuca di Sicilia AG 16 5877 38201
Menfi AG 17 12592 50793
Salemi TP 17 10794 61587
Castelvetrano TP 18 31806 93393
Contessa Entellina PA 18 1766 95159
Roccamena PA 19 1505 96664
Vita TP 20 2056 98720
Camporeale PA 20 3373 102093

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Mazara del Vallo (51718 inhabitants)
48 Km E of Marsala (83194 inhabitants)
51 Km SE of Trapani (68759 inhabitants)
53 Km SW of Palermo (674435 inhabitants)
60 Km SW of Bagheria (55387 inhabitants)
72 Km NW of Agrigento (59770 inhabitants)
100 Km W of Caltanissetta (63360 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 2.3 2023-10-01
07:47:39		 37.7482 12.9777 4 2023-10-01
08:02:35		 Sala Sismica INGV-Roma 121638661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-10-01 07:47:39 ± 0.14
Latitude 37.7482 ± 0.0072
Longitude 12.9777 ± 0.0091
Depth (km) 4 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121638661

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 840
Semi-minor axis of confidence ellipse (meter) 115
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 139
Circular confidence region, given by single value of horizontal uncertainty (meter) 840.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.49
Epicentral distance of station closest to the epicenter (degree) 0.05756
Epicentral distance of station farthest from the epicenter (degree) 0.87324
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations 36
Type of magnitude ML
Reference to an origin 121638661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-10-01 08:02:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LEVAN.EHZ. 2023-10-01T07:48:00.45 0.6 undecidable manual S 296 61.5939 50 0.58 42
IV.MPG.HHZ. 2023-10-01T07:47:59.06 1.0 undecidable manual S 36 56.7987 50 0.48 22
IV.GIB.HHZ. 2023-10-01T07:47:57.05 0.1 undecidable manual P 73 95.6376 50 0.6 79
IV.CSLB.HHZ. 2023-10-01T07:47:56.84 0.6 undecidable manual P 77 96.9252 50 0.19 44
IV.MARS.HHZ. 2023-10-01T07:47:51.16 0.3 undecidable manual S 271 36.2415 96 -0.84 60
IV.LEVAN.EHZ. 2023-10-01T07:47:51.60 0.1 undecidable manual P 296 61.5939 50 0.4 89
IV.MPG.HHZ. 2023-10-01T07:47:50.34 0.6 undecidable manual P 36 56.7987 50 -0.12 48
IV.CORL.HHZ. 2023-10-01T07:47:50.37 0.3 undecidable manual S 60 32.8449 97 -0.47 70
IV.CIMI.HHZ. 2023-10-01T07:47:49.90 1.0 undecidable manual P 74 54.2013 50 -0.16 24
IV.SCIAC.HHE. 2023-10-01T07:47:48.60 0.6 undecidable manual S 157 27.9498 98 -0.54 46
IV.CAVT.HHZ. 2023-10-01T07:47:47.22 0.3 undecidable manual S 249 20.9679 100 0.47 71
IV.MBFT.HHZ. 2023-10-01T07:47:46.27 0.6 undecidable manual S 354 22.0668 100 -0.87 40
IV.MARS.HHZ. 2023-10-01T07:47:45.91 0.1 undecidable manual P 271 36.2415 96 -0.75 83
IV.SCIAC.HHE. 2023-10-01T07:47:44.31 0.3 undecidable manual P 157 27.9498 98 -0.7 65
IV.CLTB.HHE. 2023-10-01T07:47:44.57 0.6 undecidable manual P 132 28.1496 98 -0.49 47
IV.CORL.HHZ. 2023-10-01T07:47:44.97 1.0 undecidable manual P 60 32.8449 97 -1.02 19
IV.CAVT.HHZ. 2023-10-01T07:47:43.41 0.1 undecidable manual P 249 20.9679 100 -0.22 100
IV.MMGO.HNZ. 2023-10-01T07:47:43.76 0.3 undecidable manual S 180 9.5793 112 0.82 63
IV.MFNL.HHZ. 2023-10-01T07:47:42.42 0.6 undecidable manual S 314 6.7932 119 0.35 50
IV.MBFT.HHZ. 2023-10-01T07:47:42.89 0.1 undecidable manual P 354 22.0668 100 -0.96 78
IV.CRJA.HNZ. 2023-10-01T07:47:42.58 0.3 undecidable manual S 21 6.3936 121 0.63 69
IV.CRJA.HNZ. 2023-10-01T07:47:41.53 0.1 undecidable manual P 21 6.3936 121 0.67 90
IV.MMGO.HNZ. 2023-10-01T07:47:41.76 0.3 undecidable manual P 180 9.5793 112 0.34 75
IV.MFNL.HHZ. 2023-10-01T07:47:41.50 0.3 undecidable manual P 314 6.7932 119 0.58 70
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MMGO.HNN. ML:2.7 0.009015 0.16 AML other m 2023-10-01T07:47:43.88
IV.MMGO.HNE. ML:2.7 0.008664999999999999 1.74 AML other m 2023-10-01T07:47:43.01
IV.MMGO.HHE. ML:2.7 0.008645 1.74 AML other m 2023-10-01T07:47:43.01
IV.MMGO.HHN. ML:2.7 0.00905 0.18 AML other m 2023-10-01T07:47:43.89
IV.MBFT.HHN. ML:2.2 0.00118 0.34 AML other m 2023-10-01T07:47:46.43
IV.MBFT.HHE. ML:2.1 0.0010405 0.6 AML other m 2023-10-01T07:47:46.46
IV.CAVT.HHN. ML:2.7 0.00428 0.22 AML other m 2023-10-01T07:47:47.43
IV.CAVT.HNN. ML:2.4 0.002165 0.22 AML other m 2023-10-01T07:47:47.43
IV.CAVT.HHE. ML:2.4 0.00202 0.2 AML other m 2023-10-01T07:47:47.59
IV.CAVT.HNE. ML:2.1 0.0009805 0.18 AML other m 2023-10-01T07:47:47.59
IV.SCIAC.HHE. ML:2.3 0.00106 0.16 AML other m 2023-10-01T07:47:50.23
IV.SCIAC.HNE. ML:2.3 0.0010685 0.16 AML other m 2023-10-01T07:47:50.23
IV.SCIAC.HNN. ML:2.3 0.0010680000000000002 0.24 AML other m 2023-10-01T07:47:50.80
IV.SCIAC.HHN. ML:2.3 0.001055 0.22 AML other m 2023-10-01T07:47:50.80
IV.MARS.HHN. ML:2.3 0.0008065 0.44 AML other m 2023-10-01T07:47:52.26
IV.MARS.HNN. ML:2.3 0.0008135 0.44 AML other m 2023-10-01T07:47:52.26
IV.CORL.HNN. ML:2.3 0.0008954999999999999 0.46 AML other m 2023-10-01T07:47:53.83
IV.CORL.HHN. ML:2.3 0.0008945000000000001 0.48 AML other m 2023-10-01T07:47:53.84
IV.CORL.HHE. ML:2.2 0.000766 0.32 AML other m 2023-10-01T07:47:57.46
IV.CORL.HNE. ML:2.2 0.0007785 0.32 AML other m 2023-10-01T07:47:57.46
IV.MARS.HHE. ML:2.2 0.0007185000000000001 0.56 AML other m 2023-10-01T07:47:58.51
IV.MARS.HNE. ML:2.2 0.0007099999999999999 0.58 AML other m 2023-10-01T07:47:58.51
IV.LEVAN.EHN. ML:2.0 0.00021300000000000003 0.66 AML other m 2023-10-01T07:48:01.93
IV.MPG.HHE. ML:2.0 0.00022349999999999998 1.04 AML other m 2023-10-01T07:48:02.46
IV.MPG.HHN. ML:2.0 0.00021250000000000002 0.3 AML other m 2023-10-01T07:48:03.52
IV.LEVAN.EHE. ML:1.9 0.00016649999999999998 0.76 AML other m 2023-10-01T07:48:03.84
IV.CIMI.HHE. ML:2.4 0.0006554999999999999 0.7 AML other m 2023-10-01T07:48:07.05
IV.CIMI.HNE. ML:2.4 0.0006955 0.7 AML other m 2023-10-01T07:48:07.06
IV.CIMI.HNN. ML:2.3 0.000541 0.56 AML other m 2023-10-01T07:48:07.64
IV.CIMI.HHN. ML:2.3 0.000496 1.26 AML other m 2023-10-01T07:48:07.96
IV.CSLB.HNE. ML:2.1 0.000142 0.5 AML other m 2023-10-01T07:48:13.08
IV.CSLB.HHE. ML:2.1 0.0001375 0.52 AML other m 2023-10-01T07:48:13.09
IV.GIB.HHE. ML:2.8 0.0007585 0.54 AML other m 2023-10-01T07:48:14.54
IV.CSLB.HNN. ML:2.2 0.00016999999999999999 0.6 AML other m 2023-10-01T07:48:14.12
IV.CSLB.HHN. ML:2.2 0.00016599999999999997 0.6 AML other m 2023-10-01T07:48:14.13
IV.GIB.HHN. ML:2.5 0.00036199999999999996 0.56 AML other m 2023-10-01T07:48:15.87
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