Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 17-07-2014 and time 02:37:37 (UTC) in region Costa Siracusana (Siracusa)

A magnitude ML 1.9 earthquake occured in region: Costa Siracusana (Siracusa), on

  • 17-07-2014 02:37:37 (UTC)
  • 17-07-2014 04:37:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.1860, 15.5520 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NE of Siracusa (122291 inhabitants)
54 Km SE of Catania (314555 inhabitants)
58 Km SE of Acireale (52622 inhabitants)
78 Km E of Ragusa (73313 inhabitants)
79 Km E of Modica (54633 inhabitants)
94 Km E 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 1.9 2014-07-17
02:37:37		 37.1865 15.5525 22 2015-09-21
09:37:39		 Bollettino Sismico Italiano INGV 14701511
Reviewed
Rev100 		ML 1.9 2014-07-17
02:37:38		 37.183 15.5588 10 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 7354371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2014-07-17 02:37:37 ± 0.17
Latitude 37.1865 ± 0.0045
Longitude 15.5525 ± 0.0102
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 14701511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 674
Semi-minor axis of confidence ellipse (meter) 671
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 274
Circular confidence region, given by single value of horizontal uncertainty (meter) 670.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 294
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.26800
Epicentral distance of station farthest from the epicenter (degree) 0.84716
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 3
Type of magnitude ML
Reference to an origin 7354371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2014-07-17 02:42:31

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 3
Type of magnitude ML
Reference to an origin 14701511
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2014-12-17 13:18:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HBSP.HHZ. 2014-07-17T02:38:05.99 0.6 undecidable manual S 266 94.0392 98 0.25 43
IV.HPAC.HHZ. 2014-07-17T02:37:59.58 0.6 undecidable manual S 221 69.9744 101 0.17 45
IV.HLNI.HHZ. 2014-07-17T02:37:57.21 0.3 undecidable manual S 287 62.6928 102 -0.3 66
IV.HBSP.HHZ. 2014-07-17T02:37:54.01 0.1 positive manual P 266 94.0392 98 0 88
IV.HCRL.HHZ. 2014-07-17T02:37:53.73 0.3 undecidable manual S 283 47.1195 107 0.23 70
IV.SSY.HHZ. 2014-07-17T02:37:52.22 0.6 undecidable manual S 266 42.4242 110 -0.08 48
IV.HAVL.HHZ. 2014-07-17T02:37:52.97 0.6 undecidable manual S 237 45.621 108 -0.15 47
IV.HAGA.HHZ. 2014-07-17T02:37:51.10 0.6 undecidable manual S 287 36.741 113 0.21 48
IV.HPAC.HHZ. 2014-07-17T02:37:50.46 0.3 negative manual P 221 69.9744 101 0.1 68
IV.MEU.SHZ. 2014-07-17T02:37:49.12 0.1 positive manual P 263 64.3911 102 -0.4 86
IV.AGST.EHZ. 2014-07-17T02:37:49.01 0.6 undecidable manual S 285 29.748 119 -0.2 47
IV.HLNI.HHZ. 2014-07-17T02:37:49.21 0.1 positive manual P 287 62.6928 102 -0.05 93
IV.HCRL.HHZ. 2014-07-17T02:37:47.13 0.1 positive manual P 283 47.1195 107 0.19 94
IV.SSY.HHZ. 2014-07-17T02:37:46.29 0.1 undecidable manual P 266 42.4242 110 0.04 98
IV.HAVL.HHZ. 2014-07-17T02:37:46.72 0.1 positive manual P 237 45.621 108 0 97
IV.HAGA.HHZ. 2014-07-17T02:37:45.50 0.1 positive manual P 287 36.741 113 0.06 98
IV.AGST.EHZ. 2014-07-17T02:37:44.50 0.1 positive manual P 285 29.748 119 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HAVL.HHN. ML:1.8 0.00016499999999999997 0.3 AML other m 2014-07-17T02:37:53.19
IV.HAVL.HHE. ML:1.8 0.0001485 1.14 AML other m 2014-07-17T02:37:53.19
IV.HCRL.HHN. ML:1.8 0.00015125 1.34 AML other m 2014-07-17T02:37:53.98
IV.HCRL.HHE. ML:1.8 0.00017299999999999998 0.14 AML other m 2014-07-17T02:37:54.16
IV.HLNI.HHE. ML:2.0 0.00019250000000000002 1.26 AML other m 2014-07-17T02:37:57.54
IV.HLNI.HHN. ML:2.2 0.00028649999999999997 0.24 AML other m 2014-07-17T02:37:57.92
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