Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 11-05-2022 and time 00:41:25 (UTC) in region 4 km N Mazzarrone (CT)

A magnitude ML 1.6 earthquake occured in region: 4 km N Mazzarrone (CT), on

  • 11-05-2022 00:41:25 (UTC)
  • 11-05-2022 02:41:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.1200, 14.5510 at 22 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Mazzarrone CT 4 4078 4078
Acate RG 11 10954 15032
Grammichele CT 13 13418 28450
Caltagirone CT 14 38686 67136
Licodia Eubea CT 14 3081 70217
Niscemi CL 15 27558 97775
Chiaramonte Gulfi RG 17 8238 106013
Vizzini CT 18 6241 112254
Vittoria RG 19 63339 175593
Monterosso Almo RG 19 3032 178625
Comiso RG 20 30156 208781

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km N of Vittoria (63339 inhabitants)
27 Km NW of Ragusa (73313 inhabitants)
27 Km E of Gela (75827 inhabitants)
35 Km NW of Modica (54633 inhabitants)
60 Km SE of Caltanissetta (63360 inhabitants)
64 Km SW of Catania (314555 inhabitants)
66 Km W of Siracusa (122291 inhabitants)
77 Km SW of Acireale (52622 inhabitants)
88 Km E of Agrigento (59770 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 1.6 2022-05-11
00:41:25		 37.1198 14.5507 22 2023-01-31
19:03:28		 Bollettino Sismico Italiano INGV 108007261
Reviewed
Rev100 		ML 1.6 2022-05-11
00:41:24		 37.136 14.5163 22 2022-05-11
00:47:23		 Sala Sismica INGV-Roma 104463481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-05-11 00:41:25 ± 0.17
Latitude 37.1198 ± 0.0054
Longitude 14.5507 ± 0.0079
Depth (km) 22 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 108007261

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 618
Semi-minor axis of confidence ellipse (meter) 400
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 133
Circular confidence region, given by single value of horizontal uncertainty (meter) 620.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.10342
Epicentral distance of station farthest from the epicenter (degree) 0.50902
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 108007261
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-08-02 09:39:13

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 104463481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-05-11 00:47:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2022-05-11T00:41:43.16 0.6 undecidable manual S 109 53.6019 105 0.78 39
IV.HAGA.HHZ. 2022-05-11T00:41:43.30 0.6 undecidable manual S 71 56.499 104 0.19 46
IV.ISPIC.EHZ. 2022-05-11T00:41:41.63 0.6 undecidable manual S 140 48.9177 107 0.45 44
IV.HCRL.HHZ. 2022-05-11T00:41:40.84 0.6 undecidable manual S 67 46.2204 108 0.34 45
IV.HLNI.HHZ. 2022-05-11T00:41:38.28 0.6 undecidable manual S 48 38.0286 112 -0.16 48
IV.CROCE.HHZ. 2022-05-11T00:41:37.10 0.6 undecidable manual S 183 31.8459 117 0.16 48
IV.HMDC.HHZ. 2022-05-11T00:41:36.00 0.6 undecidable manual S 131 27.2505 122 0.14 49
IV.HAVL.HHZ. 2022-05-11T00:41:35.05 0.3 undecidable manual P 109 53.6019 105 -0.08 71
IV.HAGA.HHZ. 2022-05-11T00:41:35.30 0.3 undecidable manual P 71 56.499 104 -0.25 68
IV.RAFF.HHZ. 2022-05-11T00:41:35.58 0.6 undecidable manual S 304 20.1687 132 1.24 33
IV.ISPIC.EHZ. 2022-05-11T00:41:34.44 0.1 undecidable manual P 140 48.9177 107 0 97
IV.SSY.HHZ. 2022-05-11T00:41:34.24 0.1 undecidable manual P 85 46.4202 108 0.17 94
IV.HCRL.HHZ. 2022-05-11T00:41:33.92 0.1 positive manual P 67 46.2204 108 -0.12 95
IV.HVIT.HHZ. 2022-05-11T00:41:33.01 0.6 undecidable manual S 190 14.3745 142 -0.26 49
IV.HVZN.HHZ. 2022-05-11T00:41:33.33 0.6 undecidable manual S 66 15.9729 139 -0.21 50
IV.HLNI.HHZ. 2022-05-11T00:41:32.62 0.1 positive manual P 48 38.0286 112 -0.23 94
IV.ACATE.EHZ. 2022-05-11T00:41:32.80 0.6 undecidable manual S 203 11.4774 149 -0.04 52
IV.HMDC.HHZ. 2022-05-11T00:41:31.31 0.3 undecidable manual P 131 27.2505 122 -0.05 75
IV.CROCE.HHZ. 2022-05-11T00:41:31.84 0.1 negative manual P 183 31.8459 117 -0.15 97
IV.RAFF.HHZ. 2022-05-11T00:41:30.68 0.1 undecidable manual P 304 20.1687 132 0.19 98
IV.HVZN.HHZ. 2022-05-11T00:41:29.88 0.1 positive manual P 66 15.9729 139 -0.15 100
IV.ACATE.EHZ. 2022-05-11T00:41:29.42 0.1 undecidable manual P 203 11.4774 149 -0.2 100
IV.HVIT.HHZ. 2022-05-11T00:41:29.63 0.1 negative manual P 190 14.3745 142 -0.24 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HVIT.HHN. ML:1.8 0.000372 0.96 AML other m 2022-05-11T00:41:33.17
IV.ACATE.EHN. ML:1.8 0.000421 0.38 AML other m 2022-05-11T00:41:33.38
IV.HVIT.HHE. ML:1.9 0.0005235 0.56 AML other m 2022-05-11T00:41:33.06
IV.HVZN.HHN. ML:1.5 0.0001985 0.64 AML other m 2022-05-11T00:41:33.46
IV.RAFF.HHN. ML:1.6 0.0002055 0.34 AML other m 2022-05-11T00:41:35.95
IV.RAFF.HHE. ML:1.5 0.00015099999999999998 1.56 AML other m 2022-05-11T00:41:35.02
IV.ACATE.EHE. ML:1.5 0.00021400000000000002 0.72 AML other m 2022-05-11T00:41:36.05
IV.HVZN.HHE. ML:1.4 0.0001645 0.48 AML other m 2022-05-11T00:41:36.21
IV.HMDC.HHE. ML:1.3 0.0000839 1 AML other m 2022-05-11T00:41:36.78
IV.HMDC.HHN. ML:1.8 0.0002805 0.98 AML other m 2022-05-11T00:41:36.30
IV.HLNI.HHE. ML:1.7 0.000165 0.28 AML other m 2022-05-11T00:41:38.64
IV.HLNI.HHN. ML:1.7 0.00017099999999999998 1.14 AML other m 2022-05-11T00:41:39.61
IV.HCRL.HHN. ML:1.8 0.0001505 0.16 AML other m 2022-05-11T00:41:44.10
IV.HCRL.HHE. ML:1.5 0.0000746 1.34 AML other m 2022-05-11T00:41:44.02
IV.HAVL.HHE. ML:1.5 0.00006615 1.36 AML other m 2022-05-11T00:41:46.02
IV.HAVL.HHN. ML:1.7 0.0001095 1.32 AML other m 2022-05-11T00:41:46.93
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