Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 11-09-2023 and time 09:12:01 (UTC) in region 2 km W Tripi (ME)

A magnitude ML 1.8 earthquake occured in region: 2 km W Tripi (ME), on

  • 11-09-2023 09:12:01 (UTC)
  • 11-09-2023 11:12:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.0550, 15.0830 at 8 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
Tripi ME 2 873 873
Basicò ME 2 612 1485
Novara di Sicilia ME 6 1337 2822
Mazzarrà Sant'Andrea ME 6 1531 4353
Furnari ME 7 3784 8137
Falcone ME 7 2808 10945
Montalbano Elicona ME 7 2287 13232
Oliveri ME 8 2181 15413
Rodì Milici ME 10 2056 17469
San Piero Patti ME 10 2915 20384
Fondachelli-Fantina ME 11 1019 21403
Terme Vigliatore ME 12 7395 28798
Librizzi ME 12 1660 30458
Castroreale ME 12 2504 32962
Patti ME 14 13431 46393
Montagnareale ME 15 1615 48008
Roccella Valdemone ME 15 666 48674
Raccuja ME 15 1041 49715
Malvagna ME 15 733 50448
Barcellona Pozzo di Gotto ME 16 41583 92031
Antillo ME 17 919 92950
Floresta ME 17 485 93435
Moio Alcantara ME 18 717 94152
Francavilla di Sicilia ME 18 3945 98097
Ucria ME 18 1058 99155
Sant'Angelo di Brolo ME 19 3090 102245
Santa Domenica Vittoria ME 19 980 103225
Merì ME 19 2338 105563
Motta Camastra ME 19 845 106408
Castiglione di Sicilia CT 19 3215 109623

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km W of Messina (238439 inhabitants)
50 Km W of Reggio di Calabria (183035 inhabitants)
50 Km N of Acireale (52622 inhabitants)
61 Km N of Catania (314555 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 1.8 2023-09-11
09:12:01		 38.0553 15.0833 8 2023-09-11
09:20:36		 Sala Sismica INGV-Roma 120969651
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-11 09:12:01 ± 0.06
Latitude 38.0553 ± 0.0027
Longitude 15.0833 ± 0.0034
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 120969651

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 336
Semi-minor axis of confidence ellipse (meter) 181
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 151
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.76442
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 120969651
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-11 09:20:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SOI.EHZ. 2023-09-11T09:12:27.40 0.6 undecidable manual S 88 84.8484 50 0.16 43
IV.MRCB.HHZ. 2023-09-11T09:12:19.43 0.6 undecidable manual S 77 55.4001 50 0.05 45
IV.SOI.EHZ. 2023-09-11T09:12:16.15 0.1 undecidable manual P 88 84.8484 50 -0.17 83
IV.IVPL.HHZ. 2023-09-11T09:12:15.04 0.6 undecidable manual S 346 36.741 50 0.64 40
IV.GALF.HHZ. 2023-09-11T09:12:14.31 3.0 undecidable manual P 59.1963 1.93 0
IV.EPZF.HHZ. 2023-09-11T09:12:12.69 0.6 undecidable manual S 218 32.4453 104 -0.29 45
IV.MRCB.HHZ. 2023-09-11T09:12:11.47 0.3 negative manual P 77 55.4001 50 -0.31 64
IV.EMSG.HHZ. 2023-09-11T09:12:11.36 1.0 undecidable manual S 204 28.5492 105 -0.31 22
IV.EPMN.HHZ. 2023-09-11T09:12:11.78 0.6 undecidable manual S 162 27.3504 106 0.51 43
IV.MILZ.HHZ. 2023-09-11T09:12:10.96 0.6 undecidable manual S 28 27.2505 106 -0.27 46
IV.MPNC.HHE. 2023-09-11T09:12:10.84 0.6 undecidable manual S 67 25.6521 107 0.14 46
IV.IVPL.HHZ. 2023-09-11T09:12:09.02 0.3 negative manual P 346 36.741 50 0.11 70
IV.MUCR.HHZ. 2023-09-11T09:12:08.23 0.6 undecidable manual S 266 18.3705 113 -0.09 48
IV.EPZF.HHZ. 2023-09-11T09:12:08.45 0.6 negative manual P 218 32.4453 104 0.36 45
IV.MILZ.HHZ. 2023-09-11T09:12:07.11 0.1 undecidable manual P 28 27.2505 106 0.03 95
IV.EPMN.HHZ. 2023-09-11T09:12:07.21 0.1 positive manual P 162 27.3504 106 0.11 95
IV.EMSG.HHZ. 2023-09-11T09:12:07.43 0.1 undecidable manual P 204 28.5492 105 0.1 95
IV.MPNC.HHE. 2023-09-11T09:12:06.71 0.1 undecidable manual P 67 25.6521 107 -0.06 96
IV.LIBRI.HHZ. 2023-09-11T09:12:06.91 0.6 undecidable manual S 283 13.875 119 -0.02 49
IV.MUCR.HHZ. 2023-09-11T09:12:05.26 0.1 positive manual P 266 18.3705 113 -0.14 95
IV.NOV.HHZ. 2023-09-11T09:12:04.50 0.6 undecidable manual S 123 5.5944 144 -0.23 49
IV.LIBRI.HHZ. 2023-09-11T09:12:04.55 0.6 positive manual P 283 13.875 119 -0.05 49
IV.AIO.HHZ. 2023-09-11T09:12:04.93 3.0 positive manual P -0.01 0
IV.NOV.HHZ. 2023-09-11T09:12:03.28 0.1 undecidable manual P 123 5.5944 144 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LIBRI.HHN. ML:1.5 0.000354 0.84 AML other m 2023-09-11T09:12:07.21
IV.LIBRI.HNN. ML:1.9 0.0009419999999999999 0.88 AML other m 2023-09-11T09:12:07.69
IV.LIBRI.HNE. ML:1.9 0.0009635000000000001 0.66 AML other m 2023-09-11T09:12:08.36
IV.LIBRI.HHE. ML:1.6 0.0004995 0.44 AML other m 2023-09-11T09:12:08.11
IV.MUCR.HHE. ML:1.8 0.0005625 0.8 AML other m 2023-09-11T09:12:08.52
IV.MUCR.HHN. ML:1.7 0.00042100000000000004 0.64 AML other m 2023-09-11T09:12:09.53
IV.MILZ.HHN. ML:1.7 0.0002495 1.16 AML other m 2023-09-11T09:12:11.18
IV.MILZ.HHE. ML:1.8 0.000312 0.94 AML other m 2023-09-11T09:12:12.51
IV.IVPL.HNE. ML:1.9 0.00027800000000000004 0.44 AML other m 2023-09-11T09:12:16.33
IV.IVPL.HHE. ML:1.8 0.000272 0.44 AML other m 2023-09-11T09:12:16.56
IV.IVPL.HNN. ML:2.0 0.00039549999999999996 0.92 AML other m 2023-09-11T09:12:19.08
IV.IVPL.HHN. ML:2.0 0.000439 0.92 AML other m 2023-09-11T09:12:19.55
IV.MRCB.HHN. ML:1.6 0.0001019 0.94 AML other m 2023-09-11T09:12:21.85
IV.MRCB.HHE. ML:1.6 0.00008365 0.42 AML other m 2023-09-11T09:12:22.23
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