Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 10-02-2018 and time 13:01:03 (Italy) in region Costa Siracusana (Siracusa)

A magnitude ML 2.1 earthquake occured in region: Costa Siracusana (Siracusa), on

  • 10-02-2018 12:01:03 (UTC)
  • 10-02-2018 13:01:03 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.1500, 15.3210 at 19 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
Siracusa SR 10 122291 122291
Priolo Gargallo SR 12 12091 134382
Augusta SR 13 36305 170687
Floridia SR 17 22762 193449
Melilli SR 17 13621 207070
Solarino SR 19 8091 215161

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km N of Siracusa (122291 inhabitants)
44 Km SE of Catania (314555 inhabitants)
53 Km S of Acireale (52622 inhabitants)
58 Km E of Ragusa (73313 inhabitants)
59 Km NE of Modica (54633 inhabitants)
73 Km E of Vittoria (63339 inhabitants)
95 Km E 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 2.1 2018-02-10
12:01:03		 37.1502 15.3207 19 2019-04-24
14:49:43		 Bollettino Sismico Italiano INGV 60333391
Reviewed
Rev100 		ML 2.2 2018-02-10
12:01:02		 37.1248 15.2092 28 2018-02-10
12:12:29		 Sala Sismica INGV-Roma 53816311
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-02-10 12:01:03 ± 0.27
Latitude 37.1502 ± 0.0126
Longitude 15.3207 ± 0.0237
Depth (km) 19 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 60333391

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2192
Semi-minor axis of confidence ellipse (meter) 1118
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 301
Circular confidence region, given by single value of horizontal uncertainty (meter) 2190.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 242
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
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) 0.12950
Epicentral distance of station farthest from the epicenter (degree) 0.76622
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 60333391
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-08-29 10:16:06

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 53816311
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-02-10 12:12:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RAFF.HHN. 2018-02-10T12:01:29.60 0.6 undecidable manual S 276 85.0482 96 0.89 33
IV.HPAC.HHE. 2018-02-10T12:01:21.30 0.3 undecidable manual S 207 55.0005 100 0.52 64
IV.HVZN.HHE. 2018-02-10T12:01:20.24 0.6 undecidable manual S 274 53.6019 101 -0.15 46
IV.HMDC.HHZ. 2018-02-10T12:01:19.51 0.1 undecidable manual S 246 52.1034 101 -0.49 86
IV.RAFF.HHN. 2018-02-10T12:01:18.05 0.3 undecidable manual P 276 85.0482 96 0.02 66
IV.HVZN.HHE. 2018-02-10T12:01:13.15 0.6 undecidable manual P 274 53.6019 101 -0.08 47
IV.HPAC.HHE. 2018-02-10T12:01:13.44 0.1 undecidable manual P 207 55.0005 100 -0.01 94
IV.HMDC.HHZ. 2018-02-10T12:01:12.59 0.1 undecidable manual P 246 52.1034 101 -0.41 87
IV.HAGA.HHZ. 2018-02-10T12:01:12.11 0.1 undecidable manual S 316 20.9679 123 -0.06 100
IV.SSY.HHE. 2018-02-10T12:01:12.40 0.1 undecidable manual S 272 21.867 122 0.02 99
IV.AGST.EHZ. 2018-02-10T12:01:10.93 0.1 undecidable manual S 325 14.3745 136 0.11 99
IV.HAGA.HHZ. 2018-02-10T12:01:08.47 0.1 undecidable manual P 316 20.9679 123 -0.01 100
IV.SSY.HHE. 2018-02-10T12:01:08.54 0.1 negative manual P 272 21.867 122 -0.06 99
IV.AGST.EHZ. 2018-02-10T12:01:07.82 0.1 undecidable manual P 325 14.3745 136 0.12 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.AGST.EHE. ML:2.1 0.0008299818000000001 0.16 AML other m 2018-02-10T12:01:11.24
IV.AGST.EHN. ML:2.3 0.001337788 0.1984 AML other m 2018-02-10T12:01:11.28
IV.HAGA.HHE. ML:2.0 0.00058197335 0.096 AML other m 2018-02-10T12:01:12.31
IV.HAGA.HHN. ML:2.2 0.0008504834 0.0768 AML other m 2018-02-10T12:01:12.63
IV.HMDC.HHE. ML:2.1 0.00027115305 0.1216 AML other m 2018-02-10T12:01:19.91
IV.HMDC.HHN. ML:2.1 0.0003016437 0.1408 AML other m 2018-02-10T12:01:20.36
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