Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 12-12-2018 and time 19:07:51 (UTC) in region 1 km W Gangi (PA)

A magnitude ML 1.3 earthquake occured in region: 1 km W Gangi (PA), on

  • 12-12-2018 19:07:51 (UTC)
  • 12-12-2018 20:07:51 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7980, 14.1890 at 9 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
Gangi PA 2 6811 6811
Petralia Soprana PA 7 3360 10171
Geraci Siculo PA 8 1945 12116
Petralia Sottana PA 9 2821 14937
Bompietro PA 10 1401 16338
Blufi PA 11 1029 17367
Castellana Sicula PA 13 3411 20778
San Mauro Castelverde PA 13 1701 22479
Alimena PA 13 2032 24511
Castel di Lucio ME 15 1294 25805
Sperlinga EN 15 805 26610
Polizzi Generosa PA 17 3407 30017
Castelbuono PA 18 8943 38960
Resuttano CL 19 2038 40998
Nicosia EN 19 13899 54897

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km NE of Caltanissetta (63360 inhabitants)
67 Km SE of Bagheria (55387 inhabitants)
76 Km NE of Agrigento (59770 inhabitants)
81 Km E of Palermo (674435 inhabitants)
82 Km N of Gela (75827 inhabitants)
86 Km W of Catania (314555 inhabitants)
88 Km W of Acireale (52622 inhabitants)
99 Km N of Vittoria (63339 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 1.3 2018-12-12
19:07:51		 37.7978 14.189 9 2019-06-04
09:16:13		 Bollettino Sismico Italiano INGV 67747001
Reviewed
Rev100 		ML 1.3 2018-12-12
19:07:52		 37.8217 14.1825 10 2018-12-12
19:13:27		 Sala Sismica INGV-Roma 63870871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-12-12 19:07:51 ± 0.21
Latitude 37.7978 ± 0.0126
Longitude 14.1890 ± 0.0159
Depth (km) 9 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 67747001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1438
Semi-minor axis of confidence ellipse (meter) 963
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 244
Circular confidence region, given by single value of horizontal uncertainty (meter) 1440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.06835
Epicentral distance of station farthest from the epicenter (degree) 0.34714
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 67747001
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-04-19 15:07:05

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 7
Type of magnitude ML
Reference to an origin 63870871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-12-12 19:13:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ALJA.HHZ. 2018-12-12T19:07:59.64 0.3 undecidable manual P 262 38.5281 50 0.29 69
IV.CSLB.HHZ. 2018-12-12T19:07:59.05 0.6 undecidable manual S 323 19.2696 114 0.02 49
IV.GALF.HHZ. 2018-12-12T19:07:58.97 0.3 undecidable manual P 106 34.5432 50 0.24 69
IV.PLLN.EHE. 2018-12-12T19:07:56.46 0.3 undecidable manual P 349 21.9669 112 0.04 73
IV.PETRA.HHZ. 2018-12-12T19:07:56.35 0.6 undecidable manual S 301 7.5813 139 0.65 41
IV.RESU.HHZ. 2018-12-12T19:07:55.86 0.3 undecidable manual P 215 20.3685 113 -0.27 70
IV.CSLB.HHZ. 2018-12-12T19:07:55.49 0.1 undecidable manual P 323 19.2696 114 -0.43 90
IV.PETRA.HHZ. 2018-12-12T19:07:53.94 0.1 positive manual P 301 7.5813 139 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSLB.HHE. ML:0.9 0.00006469999999999999 0.66 AML other m 2018-12-12T19:08:00.54
IV.CSLB.HHN. ML:0.9 0.0000649 0.8 AML other m 2018-12-12T19:08:00.58
IV.RESU.HHN. ML:1.5 0.000216 1.18 AML other m 2018-12-12T19:08:05.77
IV.RESU.HHE. ML:1.4 0.00017649999999999998 0.34 AML other m 2018-12-12T19:08:06.13
IV.ALJA.HHN. ML:1.5 0.00010255 0.64 AML other m 2018-12-12T19:08:08.40
IV.GALF.HHE. ML:1.2 0.00005865000000000001 1.58 AML other m 2018-12-12T19:08:11.12
IV.ALJA.HHE. ML:1.4 0.00009784999999999999 0.8 AML other m 2018-12-12T19:08:12.17
IV.GALF.HHN. ML:1.2 0.000068 0.5 AML other m 2018-12-12T19:08:12.92
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