Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 22-05-2016 and time 07:08:52 (UTC) in region 4 km E Petralia Soprana (PA)

A magnitude ML 2.3 earthquake occured in region: 4 km E Petralia Soprana (PA), on

  • 22-05-2016 07:08:52 (UTC)
  • 22-05-2016 09:08:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8080, 14.1550 at 7 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
Petralia Soprana PA 4 3360 3360
Gangi PA 5 6811 10171
Petralia Sottana PA 6 2821 12992
Geraci Siculo PA 6 1945 14937
Bompietro PA 8 1401 16338
Blufi PA 9 1029 17367
Castellana Sicula PA 10 3411 20778
San Mauro Castelverde PA 12 1701 22479
Alimena PA 13 2032 24511
Polizzi Generosa PA 14 3407 27918
Castelbuono PA 15 8943 36861
Castel di Lucio ME 16 1294 38155
Resuttano CL 18 2038 40193
Sperlinga EN 18 805 40998

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km N of Caltanissetta (63360 inhabitants)
64 Km SE of Bagheria (55387 inhabitants)
75 Km NE of Agrigento (59770 inhabitants)
78 Km E of Palermo (674435 inhabitants)
83 Km N of Gela (75827 inhabitants)
89 Km W of Catania (314555 inhabitants)
92 Km W of Acireale (52622 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 2016-05-22
07:08:52		 37.8078 14.155 7 2016-11-08
11:48:47		 Bollettino Sismico Italiano INGV 25493701
Reviewed
Rev100 		ML 2.3 2016-05-22
07:08:52		 37.8037 14.1735 8 2016-05-22
07:24:55		 Sala Sismica INGV-Roma 25264471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-05-22 07:08:52 ± 0.07
Latitude 37.8078 ± 0.0045
Longitude 14.1550 ± 0.0068
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 25493701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 542
Semi-minor axis of confidence ellipse (meter) 489
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 275
Circular confidence region, given by single value of horizontal uncertainty (meter) 540.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 44
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 43
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.04047
Epicentral distance of station farthest from the epicenter (degree) 1.51985
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 34
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 25264471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-05-22 07:24:55

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 25493701
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2016-06-01 09:41:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SOI.EHN. 2016-05-22T07:09:21.30 0.6 undecidable manual P 79 168.7089 50 0.7 29
IV.MTTG.HHE. 2016-05-22T07:09:16.22 0.6 undecidable manual P 80 136.9629 50 0.52 35
IV.USI.HHE. 2016-05-22T07:09:14.13 0.3 undecidable manual P 320 131.1687 50 -0.67 50
IV.MSRU.HHZ. 2016-05-22T07:09:14.13 0.6 undecidable manual P 66 128.5713 50 -0.28 38
IV.SOLUN.HHZ. 2016-05-22T07:09:13.60 0.6 undecidable manual S 300 62.8926 50 0.84 37
IV.HAVL.HHZ. 2016-05-22T07:09:13.96 0.3 undecidable manual P 138 126.9729 50 -0.2 58
IV.HMDC.HHZ. 2016-05-22T07:09:12.34 0.6 undecidable manual P 149 109.2129 50 0.92 32
IV.HAGA.HHZ. 2016-05-22T07:09:11.26 0.6 undecidable manual P 123 105.3168 50 0.43 39
IV.MPNC.HHZ. 2016-05-22T07:09:11.86 0.1 undecidable manual P 70 111.2997 50 0.12 82
IV.SSY.HHE. 2016-05-22T07:09:11.33 1.0 undecidable manual P 131 108.3138 50 0.04 21
IV.IVPL.HHZ. 2016-05-22T07:09:09.83 0.3 undecidable manual P 49 95.7264 50 0.48 59
IV.MNO.SHZ. 2016-05-22T07:09:09.49 0.6 undecidable manual S 74 49.2174 50 0.38 44
IV.MEU.SHE. 2016-05-22T07:09:09.77 0.3 undecidable manual P 142 97.5246 50 0.15 63
IV.MSFR.HHZ. 2016-05-22T07:09:09.00 0.6 undecidable manual S 57 45.7209 50 0.83 38
IV.ILLI.HHZ. 2016-05-22T07:09:09.97 1.0 undecidable manual P 44 99.0231 50 0.12 21
IV.IFIL.HHZ. 2016-05-22T07:09:08.63 0.1 undecidable manual P 23 91.5417 50 -0.07 86
IV.AIO.HHZ. 2016-05-22T07:09:08.88 0.6 undecidable manual P 79 96.126 50 -0.52 39
IV.NOV.HHZ. 2016-05-22T07:09:08.39 0.1 undecidable manual P 74 89.3439 50 0.04 87
IV.IACL.HHE. 2016-05-22T07:09:07.08 0.6 undecidable manual P 12 82.3509 50 -0.2 43
IV.HVZN.HHE. 2016-05-22T07:09:07.68 0.1 undecidable manual P 145 85.4478 50 -0.09 87
IV.HLNI.HHZ. 2016-05-22T07:09:06.65 0.6 undecidable manual P 129 81.0522 50 -0.43 41
IV.CLTA.HHN. 2016-05-22T07:09:06.65 0.3 undecidable manual P 193 74.0703 50 0.64 58
IV.MPG.SHZ. 2016-05-22T07:09:06.44 0.6 undecidable manual P 300 79.8645 50 -0.45 40
IV.ALJA.HHZ. 2016-05-22T07:09:06.00 0.6 undecidable manual S 260 35.742 102 0.61 42
IV.ESML.HHZ. 2016-05-22T07:09:04.47 0.6 undecidable manual P 108 66.9774 50 -0.44 42
IV.MCT.BHZ. 2016-05-22T07:09:03.04 1.0 undecidable manual P 247 52.4031 50 0.37 22
IV.SOLUN.HHZ. 2016-05-22T07:09:03.80 0.6 undecidable manual P 300 62.8926 50 -0.49 41
IV.EPZF.HHZ. 2016-05-22T07:09:03.49 0.6 undecidable manual P 88 61.5939 50 -0.59 40
IV.MSFR.HHZ. 2016-05-22T07:09:01.08 0.1 undecidable manual P 57 45.7209 50 -0.55 84
IV.MNO.SHZ. 2016-05-22T07:09:01.63 0.3 undecidable manual P 74 49.2174 50 -0.55 63
IV.GIB.HHZ. 2016-05-22T07:09:01.37 0.3 undecidable manual S 331 23.1546 108 0.22 71
IV.RESU.HHZ. 2016-05-22T07:09:00.33 0.3 undecidable manual S 206 19.869 111 0.28 70
IV.PLLN.EHZ. 2016-05-22T07:09:00.57 0.3 undecidable manual S 357 20.5683 110 0.29 70
IV.CAGR.HHZ. 2016-05-22T07:09:00.47 0.6 undecidable manual P 124 36.6411 101 0.28 45
IV.GALF.HHZ. 2016-05-22T07:09:00.69 0.6 undecidable manual P 106 37.629 50 0.29 45
IV.ALJA.HHZ. 2016-05-22T07:08:59.57 0.6 undecidable manual P 260 35.742 102 -0.46 44
IV.CSLB.HHZ. 2016-05-22T07:08:59.05 0.6 undecidable manual S 329 16.6722 114 0 50
IV.PLLN.EHZ. 2016-05-22T07:08:57.01 0.3 undecidable manual P 357 20.5683 110 -0.07 74
IV.GIB.HHZ. 2016-05-22T07:08:57.37 0.6 undecidable manual P 331 23.1546 108 -0.21 47
IV.CSLB.HHZ. 2016-05-22T07:08:56.18 0.3 positive manual P 329 16.6722 114 -0.19 72
IV.RESU.HHZ. 2016-05-22T07:08:56.25 0.1 positive manual P 206 19.869 111 -0.7 83
IV.PETRA.HHZ. 2016-05-22T07:08:55.80 0.3 undecidable manual S 309 4.4955 149 0.08 75
IV.PETRA.HHZ. 2016-05-22T07:08:54.54 0.1 negative manual P 309 4.4955 149 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.AIO.HHN. ML:2.2 0.000163 0.38 AML other m 2016-05-22T07:09:30.52
IV.AIO.HHE. ML:2.3 0.000189 0.4 AML other m 2016-05-22T07:09:31.54
IV.ALJA.HHE. ML:2.4 0.00103 0.5 AML other m 2016-05-22T07:09:08.36
IV.ALJA.HHN. ML:2.4 0.0010699999999999998 1.28 AML other m 2016-05-22T07:09:09.82
IV.HAVL.HHE. ML:2.4 0.0001805 0.88 AML other m 2016-05-22T07:09:35.46
IV.HAVL.HHN. ML:2.4 0.0001795 0.76 AML other m 2016-05-22T07:09:38.26
IV.MCT.BHE. ML:2.1 0.000286 0.84 AML other m 2016-05-22T07:09:24.24
IV.MCT.BHN. ML:2.2 0.0003885 1 AML other m 2016-05-22T07:09:26.74
IV.MNO.SHE. ML:0.0 0.000763 0.6 AML other m 2016-05-22T07:09:14.27
IV.MNO.SHN. ML:0.0 0.000853 0.52 AML other m 2016-05-22T07:09:15.07
IV.MSRU.HHE. ML:2.6 0.00023649999999999998 0.74 AML other m 2016-05-22T07:09:39.99
IV.MSRU.HHN. ML:2.4 0.00016999999999999999 0.76 AML other m 2016-05-22T07:09:41.89
IV.NOV.HHE. ML:2.3 0.000243 0.4 AML other m 2016-05-22T07:09:31.73
IV.NOV.HHN. ML:2.1 0.00016049999999999997 0.72 AML other m 2016-05-22T07:09:37.27
IV.PLLN.EHN. ML:2.6 0.00271 0.34 AML other m 2016-05-22T07:09:03.70
IV.PLLN.EHE. ML:2.4 0.00183 1.32 AML other m 2016-05-22T07:09:04.60
IV.RESU.HHE. ML:2.5 0.002665 1.2 AML other m 2016-05-22T07:09:02.38
IV.RESU.HHN. ML:2.5 0.0026349999999999998 1.14 AML other m 2016-05-22T07:09:02.78
IV.SOLUN.HHE. ML:2.3 0.000365 0.66 AML other m 2016-05-22T07:09:17.75
IV.SOLUN.HHN. ML:2.0 0.0001735 0.86 AML other m 2016-05-22T07:09:18.26
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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