Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 15-09-2020 and time 17:11:20 (Italy) in region Costa Siciliana nord occidentale (Trapani)

A magnitude ML 2.3 earthquake occured in region: Costa Siciliana nord occidentale (Trapani), on

  • 15-09-2020 15:11:20 (UTC)
  • 15-09-2020 17:11:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.3010, 12.9040 at 11 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km W of Palermo (674435 inhabitants)
46 Km NE of Trapani (68759 inhabitants)
59 Km W of Bagheria (55387 inhabitants)
69 Km NE of Marsala (83194 inhabitants)
77 Km NE of Mazara del Vallo (51718 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 2.3 2020-09-15
15:11:20		 38.3007 12.9037 11 2021-02-26
14:55:57		 Bollettino Sismico Italiano INGV 83444261
Reviewed
Rev100 		ML 2.3 2020-09-15
15:11:20		 38.2865 12.9353 10 2020-09-15
15:53:12		 Sala Sismica INGV-Roma 82931931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-15 15:11:20 ± 0.56
Latitude 38.3007 ± 0.0189
Longitude 12.9037 ± 0.0160
Depth (km) 11 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 83444261

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1787
Semi-minor axis of confidence ellipse (meter) 1272
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 148
Circular confidence region, given by single value of horizontal uncertainty (meter) 1790.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.48
Epicentral distance of station closest to the epicenter (degree) 0.35613
Epicentral distance of station farthest from the epicenter (degree) 2.99114
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 31
Type of magnitude ML
Reference to an origin 82931931
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-15 15:53:12

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations 29
Type of magnitude ML
Reference to an origin 83444261
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-11-30 09:24:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
MN.VSL.HHZ. 2020-09-15T15:12:06.33 0.6 undecidable manual P 295 332.0121 54 -1.93 8
IV.RAFF.HHZ. 2020-09-15T15:11:49.07 0.3 undecidable manual P 133 175.0914 90 0.35 69
IV.RESU.HHZ. 2020-09-15T15:11:41.36 0.6 undecidable manual P 125 124.1868 90 0.47 53
IV.PETRA.HHZ. 2020-09-15T15:11:40.10 0.3 undecidable manual P 116 117.7932 90 0.2 85
IV.CRJA.HHZ. 2020-09-15T15:11:39.11 0.6 undecidable manual S 171 55.9995 90 1.37 41
IV.PLLN.EHE. 2020-09-15T15:11:39.07 0.6 undecidable manual P 107 113.3976 90 -0.15 58
IV.LEVAN.EHZ. 2020-09-15T15:11:39.41 0.6 undecidable manual S 235 59.5959 90 0.73 54
IV.CSLB.HHZ. 2020-09-15T15:11:38.05 0.6 undecidable manual P 111 108.5136 90 -0.41 55
IV.GIB.HHZ. 2020-09-15T15:11:37.54 0.6 undecidable manual P 109 103.8183 90 -0.2 58
MN.CLTB.HHZ. 2020-09-15T15:11:36.19 0.6 undecidable manual P 161 84.6486 90 1.4 38
IV.SCIAC.HHZ. 2020-09-15T15:11:35.92 0.3 undecidable manual P 169 88.7445 90 0.51 84
IV.MTGR.HHZ. 2020-09-15T15:11:35.22 0.3 undecidable manual S 196 46.9197 90 -0.08 100
IV.SCIAR.HHZ. 2020-09-15T15:11:34.04 0.6 undecidable manual P 118 83.9493 90 -0.63 54
IV.CAVT.HHE. 2020-09-15T15:11:33.49 0.6 undecidable manual P 191 70.1742 90 0.93 49
IV.ERC.EHE. 2020-09-15T15:11:33.06 0.6 undecidable manual S 224 40.1265 90 -0.44 63
IV.MPG.HHZ. 2020-09-15T15:11:33.91 0.6 undecidable manual S 111 42.624 90 -0.25 64
IV.MBFT.HHZ. 2020-09-15T15:11:32.87 0.3 undecidable manual S 174 39.5271 90 -0.47 93
IV.MARS.EHZ. 2020-09-15T15:11:32.80 0.3 undecidable manual P 206 67.5768 90 0.65 83
IV.MMGO.HHE. 2020-09-15T15:11:32.90 0.6 undecidable manual P 175 71.1732 90 0.19 62
IV.MFNL.HHZ. 2020-09-15T15:11:31.05 0.3 undecidable manual P 178 56.5989 90 0.59 87
IV.LEVAN.EHZ. 2020-09-15T15:11:30.34 0.3 undecidable manual P 235 59.5959 90 -0.58 88
IV.USI.HHZ. 2020-09-15T15:11:30.41 0.3 undecidable manual P 28 51.1155 90 0.79 81
IV.CRJA.HHZ. 2020-09-15T15:11:30.54 0.3 undecidable manual P 171 55.9995 90 0.16 97
IV.MTGR.HHZ. 2020-09-15T15:11:28.30 0.3 undecidable manual P 196 46.9197 90 -0.67 86
IV.MPG.HHZ. 2020-09-15T15:11:27.01 0.3 undecidable manual P 111 42.624 90 -1.3 63
IV.ERC.EHE. 2020-09-15T15:11:27.22 0.3 undecidable manual P 224 40.1265 90 -0.71 86
IV.MBFT.HHZ. 2020-09-15T15:11:26.95 0.3 undecidable manual P 174 39.5271 90 -0.89 79
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MBFT.HHE. ML:2.4 0.000852592 0.256 AML other m 2020-09-15T15:11:33.56
IV.MPG.HHN. ML:2.2 0.0004991666999999999 0.256 AML other m 2020-09-15T15:11:34.33
IV.MBFT.HNE. ML:1.6 0.0001325723 0.6912 AML other m 2020-09-15T15:11:34.01
IV.MBFT.HHN. ML:2.2 0.00059098935 0.512 AML other m 2020-09-15T15:11:34.37
IV.MPG.HHE. ML:2.1 0.0003678733 0.32 AML other m 2020-09-15T15:11:39.33
IV.LEVAN.EHE. ML:2.0 0.0001897226 1.6032 AML other m 2020-09-15T15:11:41.18
IV.LEVAN.EHN. ML:2.0 0.00018486805 0.5376 AML other m 2020-09-15T15:11:41.63
IV.CRJA.HHE. ML:2.4 0.0005130536 0.4864 AML other m 2020-09-15T15:11:42.36
IV.USI.HHN. ML:2.7 0.0014326865 0.2944 AML other m 2020-09-15T15:11:42.54
IV.USI.HHE. ML:2.4 0.0006118211000000001 0.3456 AML other m 2020-09-15T15:11:42.94
IV.CRJA.HHN. ML:2.2 0.0003729424 0.3584 AML other m 2020-09-15T15:11:46.30
IV.MARS.EHN. ML:2.2 0.0002796951 0.4224 AML other m 2020-09-15T15:11:47.04
IV.MARS.EHE. ML:2.4 0.00041378104999999996 0.7936 AML other m 2020-09-15T15:11:47.16
IV.SCIAR.HNE. ML:2.4 0.0003081441 0.4992 AML other m 2020-09-15T15:11:48.28
IV.SCIAC.HHE. ML:2.2 0.000187699815 0.64 AML other m 2020-09-15T15:11:50.02
IV.SCIAC.HHN. ML:2.3 0.00025924349999999994 0.6144 AML other m 2020-09-15T15:11:50.14
IV.SCIAR.HHE. ML:2.3 0.0002786839 0.4224 AML other m 2020-09-15T15:11:52.25
IV.MFNL.HHE. ML:2.1 0.00030239415000000004 0.6912 AML other m 2020-09-15T15:11:52.44
IV.MFNL.HHN. ML:1.9 0.00016789345 0.4096 AML other m 2020-09-15T15:11:52.61
IV.SCIAR.HHN. ML:2.6 0.0004694205 0.3712 AML other m 2020-09-15T15:11:52.82
IV.SCIAR.HNN. ML:2.6 0.00046005655 0.384 AML other m 2020-09-15T15:11:52.63
IV.CSLB.HHN. ML:2.0 0.00008035348 0.6656 AML other m 2020-09-15T15:11:54.84
IV.GIB.HHN. ML:2.4 0.00025692825 0.5376 AML other m 2020-09-15T15:11:56.34
IV.CSLB.HHE. ML:1.8 0.00006198888 0.6016 AML other m 2020-09-15T15:11:57.00
IV.PETRA.HHN. ML:2.4 0.00017000700000000001 0.5504 AML other m 2020-09-15T15:12:03.90
IV.GIB.HHE. ML:2.4 0.00025604994999999995 0.6656 AML other m 2020-09-15T15:12:06.47
IV.PETRA.HHE. ML:2.2 0.0001355725 1.4624 AML other m 2020-09-15T15:12:07.83
IV.RESU.HHN. ML:2.3 0.00015204229 0.6144 AML other m 2020-09-15T15:12:09.25
IV.RESU.HHE. ML:2.3 0.000131929755 0.5632 AML other m 2020-09-15T15:12:13.63
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
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