Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 28-08-2018 and time 13:19:08 (Italy) in region 7 km E Bronte (CT)

A magnitude ML 1.6 earthquake occured in region: 7 km E Bronte (CT), on

  • 28-08-2018 11:19:08 (UTC)
  • 28-08-2018 13:19:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7760, 14.9100 at 31 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
Bronte CT 7 19172 19172
Maletto CT 7 3920 23092
Randazzo CT 12 10900 33992
Maniace CT 13 3765 37757
Adrano CT 14 36122 73879
Biancavilla CT 15 24007 97886
Ragalna CT 16 3924 101810
Santa Domenica Vittoria ME 16 980 102790
Santa Maria di Licodia CT 18 7641 110431
Moio Alcantara ME 19 717 111148
Cesarò ME 19 2439 113587
Milo CT 19 1087 114674
Zafferana Etnea CT 19 9517 124191
Roccella Valdemone ME 20 666 124857

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NW of Acireale (52622 inhabitants)
34 Km NW of Catania (314555 inhabitants)
73 Km SW of Messina (238439 inhabitants)
74 Km SW of Reggio di Calabria (183035 inhabitants)
81 Km E of Caltanissetta (63360 inhabitants)
87 Km NW of Siracusa (122291 inhabitants)
96 Km N of Ragusa (73313 inhabitants)
98 Km NE of Vittoria (63339 inhabitants)
98 Km NE of Gela (75827 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 2018-08-28
11:19:08		 37.7763 14.9097 31 2019-04-24
14:50:54		 Bollettino Sismico Italiano INGV 60368951
Reviewed
Rev100 		ML 2.0 2018-08-28
11:19:09		 37.7503 14.9122 26 2018-08-28
11:35:25		 Sala Sismica INGV-Roma 60291361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-08-28 11:19:08 ± 0.16
Latitude 37.7763 ± 0.0054
Longitude 14.9097 ± 0.0080
Depth (km) 31 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 60368951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 719
Semi-minor axis of confidence ellipse (meter) 406
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 109
Circular confidence region, given by single value of horizontal uncertainty (meter) 720.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.70327
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 60368951
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-08-30 05:44:22

ML:2.0

Field Value
Value 2.0
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 60291361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-08-28 11:35:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIPA.HHZ. 2018-08-28T11:19:50.18 3.0 undecidable manual Sn 0.43 0
IV.RESU.HHZ. 2018-08-28T11:19:37.00 3.0 undecidable manual Sg 0.42 0
IV.RAFF.HHZ. 2018-08-28T11:19:33.00 0.3 undecidable manual S 218 78.0663 107 0.3 63
IV.HAGA.HHZ. 2018-08-28T11:19:27.64 0.1 undecidable manual S 158 58.5969 113 -0.17 90
IV.HLNI.HHZ. 2018-08-28T11:19:24.76 0.1 undecidable manual S 184 47.619 118 -0.38 88
IV.NOV.HHE. 2018-08-28T11:19:22.23 0.1 undecidable manual S 35 34.2435 128 0.09 95
IV.AIO.HHZ. 2018-08-28T11:19:22.67 0.1 undecidable manual S 53 35.6421 126 0.24 91
IV.RAFF.HHZ. 2018-08-28T11:19:22.94 0.1 undecidable manual P 218 78.0663 107 0.42 82
IV.MUCR.HHN. 2018-08-28T11:19:21.17 0.1 undecidable manual S 354 29.748 132 -0.05 96
IV.GALF.HHZ. 2018-08-28T11:19:21.48 0.1 undecidable manual S 257 30.9468 131 0.02 97
IV.ESML.HHZ. 2018-08-28T11:19:19.35 0.1 undecidable manual S 189 17.7711 147 0.22 95
IV.HAGA.HHZ. 2018-08-28T11:19:19.47 0.1 undecidable manual P 158 58.5969 113 -0.23 88
IV.ESLN.HHZ. 2018-08-28T11:19:18.59 0.1 undecidable manual S 148 10.7781 159 0.3 94
IV.EPZF.HHZ. 2018-08-28T11:19:17.76 0.1 undecidable manual S 319 6.993 166 -0.22 97
IV.AIO.HHZ. 2018-08-28T11:19:17.03 0.1 undecidable manual P 53 35.6421 126 0.44 88
IV.HLNI.HHZ. 2018-08-28T11:19:17.86 0.1 undecidable manual P 184 47.619 118 -0.3 89
IV.GALF.HHZ. 2018-08-28T11:19:16.11 0.1 undecidable manual P 257 30.9468 131 0.08 96
IV.NOV.HHE. 2018-08-28T11:19:16.62 0.1 undecidable manual P 35 34.2435 128 0.19 93
IV.MUCR.HHN. 2018-08-28T11:19:15.71 0.1 undecidable manual P 354 29.748 132 -0.18 93
IV.EMCN.HNE. 2018-08-28T11:19:14.17 0.1 undecidable manual P 81 10.9779 159 -0.04 100
IV.ESML.HHZ. 2018-08-28T11:19:14.97 0.1 undecidable manual P 189 17.7711 147 0.28 94
IV.ESLN.HHZ. 2018-08-28T11:19:13.89 0.1 undecidable manual P 148 10.7781 159 -0.31 95
IV.EPZF.HHZ. 2018-08-28T11:19:13.49 0.1 undecidable manual P 319 6.993 166 -0.54 89
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HHE. ML:2.1 0.0003701143 0.704 AML other m 2018-08-28T11:19:22.58
IV.GALF.HHN. ML:2.0 0.00029050885000000005 0.3968 AML other m 2018-08-28T11:19:23.29
IV.GALF.HNE. ML:1.7 0.00015757945000000002 0.5056 AML other m 2018-08-28T11:19:22.58
IV.GALF.HNN. ML:1.6 0.00013164013499999998 0.7232 AML other m 2018-08-28T11:19:23.53
IV.AIO.HHE. ML:1.4 0.00007977666 0.416 AML other m 2018-08-28T11:19:23.73
IV.AIO.HHN. ML:1.4 0.000075415335 0.3968 AML other m 2018-08-28T11:19:24.21
IV.HAGA.HHN. ML:1.4 0.000051245024999999996 0.1024 AML other m 2018-08-28T11:19:28.03
IV.HAGA.HHE. ML:1.4 0.000049561387 0.1216 AML other m 2018-08-28T11:19:28.67
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
Waveforms Seismic signals in miniseed + resp format Download