Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 03-09-2014 and time 21:22:30 (UTC) in region 5 km NE Ragusa (RG)

A magnitude ML 1.8 earthquake occured in region: 5 km NE Ragusa (RG), on

  • 03-09-2014 21:22:30 (UTC)
  • 03-09-2014 23:22:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 36.9460, 14.7770 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Ragusa RG 5 73313 73313
Modica RG 10 54633 127946
Giarratana RG 12 3048 130994
Chiaramonte Gulfi RG 12 8238 139232
Comiso RG 15 30156 169388
Monterosso Almo RG 16 3032 172420
Palazzolo Acreide SR 17 8808 181228
Scicli RG 18 27077 208305
Buscemi SR 18 1051 209356

Municipalities with at least 50000 inhabitants

An earthquake occurred to
5 Km NE of Ragusa (73313 inhabitants)
10 Km N of Modica (54633 inhabitants)
21 Km E of Vittoria (63339 inhabitants)
48 Km W of Siracusa (122291 inhabitants)
49 Km E of Gela (75827 inhabitants)
68 Km SW of Catania (314555 inhabitants)
82 Km SW of Acireale (52622 inhabitants)
88 Km SE of Caltanissetta (63360 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 1.8 2014-09-03
21:22:30		 36.9455 14.7773 22 2015-09-21
09:39:02		 Bollettino Sismico Italiano INGV 16398781
Reviewed
Rev100 		ML 1.8 2014-09-03
21:22:30		 36.924 14.7973 20 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 8126041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2014-09-03 21:22:30 ± 0.27
Latitude 36.9455 ± 0.0090
Longitude 14.7773 ± 0.0158
Depth (km) 22 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 16398781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1114
Semi-minor axis of confidence ellipse (meter) 1024
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 283
Circular confidence region, given by single value of horizontal uncertainty (meter) 1110.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 235
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.01439
Epicentral distance of station farthest from the epicenter (degree) 0.47484
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:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 16398781
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-01-05 08:53:00

ML:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 8126041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2014-09-03 21:27:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.AGST.EHE. 2014-09-03T21:22:47.23 0.1 undecidable manual S 49 52.7028 105 -0.25 88
IV.SSY.HHZ. 2014-09-03T21:22:43.42 0.1 undecidable manual S 48 35.2425 115 0.33 87
IV.HPAC.HHE. 2014-09-03T21:22:43.47 0.1 undecidable manual S 139 34.9428 115 0.44 87
IV.HAVL.HHZ. 2014-09-03T21:22:41.60 0.1 undecidable manual S 87 30.6471 119 -0.38 88
IV.AGST.EHE. 2014-09-03T21:22:40.00 0.3 undecidable manual P 49 52.7028 105 -0.32 65
IV.MEU.SHZ. 2014-09-03T21:22:39.66 0.1 undecidable manual S 14 18.9699 134 0.19 92
IV.HPAC.HHE. 2014-09-03T21:22:37.74 0.1 undecidable manual P 139 34.9428 115 -0.01 94
IV.HAVL.HHZ. 2014-09-03T21:22:37.04 0.1 positive manual P 87 30.6471 119 -0.11 93
IV.HMDC.HHZ. 2014-09-03T21:22:37.12 0.1 undecidable manual S 19 1.5984 175 -0.28 95
IV.SSY.HHZ. 2014-09-03T21:22:37.97 0.1 positive manual P 48 35.2425 115 0.18 90
IV.MEU.SHZ. 2014-09-03T21:22:35.88 0.1 negative manual P 14 18.9699 134 0.19 92
IV.HMDC.HHZ. 2014-09-03T21:22:34.48 0.1 undecidable manual P 19 1.5984 175 -0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HAVL.HHN. ML:1.8 0.000228 0.66 AML other m 2014-09-03T21:22:42.05
IV.HAVL.HHE. ML:1.8 0.00027400000000000005 0.2 AML other m 2014-09-03T21:22:43.12
IV.HMDC.HHN. ML:1.8 0.0004455 0.38 AML other m 2014-09-03T21:22:37.15
IV.HMDC.HHE. ML:1.8 0.00046350000000000004 0.28 AML other m 2014-09-03T21:22:37.15
IV.MEU.SHE. ML:0.0 0.0006445 0.28 AML other m 2014-09-03T21:22:39.91
IV.MEU.SHN. ML:0.0 0.000873 0.32 AML other m 2014-09-03T21:22:40.09
IV.SSY.HHE. ML:1.8 0.000237 0.36 AML other m 2014-09-03T21:22:43.45
IV.SSY.HHN. ML:2.0 0.0003205 0.98 AML other m 2014-09-03T21:22:45.25
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