Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 03-08-2011 and time 16:51:30 (Italy) in region 4 km E Nicosia (EN)

A magnitude ML 1.8 earthquake occured in region: 4 km E Nicosia (EN), on

  • 03-08-2011 14:51:30 (UTC)
  • 03-08-2011 16:51:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7610, 14.4420 at 32 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
Nicosia EN 4 13899 13899
Sperlinga EN 8 805 14704
Cerami EN 8 2006 16710
Gagliano Castelferrato EN 10 3593 20303
Capizzi ME 10 3176 23479
Nissoria EN 12 3000 26479
Agira EN 14 8345 34824
Leonforte EN 14 13439 48263
Troina EN 14 9373 57636
Assoro EN 15 5191 62827
Castel di Lucio ME 18 1294 64121

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km NE of Caltanissetta (63360 inhabitants)
64 Km W of Catania (314555 inhabitants)
66 Km W of Acireale (52622 inhabitants)
79 Km N of Gela (75827 inhabitants)
89 Km E of Bagheria (55387 inhabitants)
91 Km NE of Agrigento (59770 inhabitants)
91 Km N of Vittoria (63339 inhabitants)
96 Km N of Ragusa (73313 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 2011-08-03
14:51:30		 37.761 14.442 32 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1268149
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-08-03 14:51:30 ± 0.25
Latitude 37.7610 ± 0.0081
Longitude 14.4420 ± 0.0137
Depth (km) 32 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1268149

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1122
Semi-minor axis of confidence ellipse (meter) 616
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 269
Circular confidence region, given by single value of horizontal uncertainty (meter) 1500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 82
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.58
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.69068
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1268149
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:01:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HVZN.HHE. 2011-08-03T14:51:53.35 0.6 undecidable manual Sg 160 68.9754 0.558 41
IV.NOV.HHN. 2011-08-03T14:51:53.19 0.6 undecidable manual Sg 64 67.5768 0.754 39
IV.CAFR.HHN. 2011-08-03T14:51:52.34 10.0 undecidable manual Pg 0 0 0
IV.HLNI.HHE. 2011-08-03T14:51:50.35 0.6 undecidable manual Sg 140 59.3961 -0.051 48
IV.GIB.HHZ. 2011-08-03T14:51:48.00 0.6 undecidable manual Sg 305 44.4222 1.157 33
IV.MUCR.HHZ. 2011-08-03T14:51:48.11 0.6 undecidable manual Sg 50 49.0176 0.199 47
IV.ECNV.HHE. 2011-08-03T14:51:46.13 10.0 undecidable manual Pg 0 0 0
IV.MCSR.HHE. 2011-08-03T14:51:44.92 0.3 undecidable manual Pg 64 76.6677 0.247 67
IV.HVZN.HHE. 2011-08-03T14:51:43.27 0.1 undecidable manual Pg 160 68.9754 -0.282 89
IV.MNO.SHZ. 2011-08-03T14:51:43.57 0.6 undecidable manual Sg 50 29.0487 0.002 51
IV.NOV.HHN. 2011-08-03T14:51:43.64 0.6 undecidable manual Pg 64 67.5768 0.295 45
IV.MSFR.HHZ. 2011-08-03T14:51:43.57 0.6 undecidable manual Sg 23 32.9448 -0.77 41
IV.RAFF.HHE. 2011-08-03T14:51:42.31 0.1 undecidable manual Pg 187 60.1953 0.022 96
IV.ALJA.HHE. 2011-08-03T14:51:42.83 0.6 undecidable manual Pg 269 60.3951 0.51 43
IV.HLNI.HHE. 2011-08-03T14:51:41.91 0.3 undecidable manual Pg 140 59.3961 -0.261 68
IV.GALF.HHZ. 2011-08-03T14:51:40.83 0.6 undecidable manual Sg 117 12.2766 -0.162 51
IV.MUCR.HHZ. 2011-08-03T14:51:40.71 0.3 undecidable manual Pg 50 49.0176 -0.021 73
IV.GIB.HHZ. 2011-08-03T14:51:39.68 0.3 undecidable manual Pg 305 44.4222 -0.436 68
IV.MNO.SHZ. 2011-08-03T14:51:38.31 0.1 undecidable manual Pg 50 29.0487 0.083 100
IV.MSFR.HHZ. 2011-08-03T14:51:38.62 0.1 undecidable manual Pg 23 32.9448 -0.05 100
IV.PLLN.SHZ. 2011-08-03T14:51:38.01 0.6 undecidable manual Pg 314 36.6411 -1.111 35
IV.CAGR.HHN. 2011-08-03T14:51:37.75 0.3 undecidable manual Pg 162 16.2726 0.741 63
IV.GALF.HHZ. 2011-08-03T14:51:36.21 0.1 undecidable manual Pg 117 12.2766 -0.525 94
IV.STR3.BHE. 2011-08-03T14:51:25.34 10.0 undecidable manual Pg 0 0 0
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download