Earthquake with magnitude of ML 1.8 on date 11-01-2011 and time 04:55:01 (Italy) in region 6 km E Mirabella Imbaccari (CT)

A magnitude ML 1.8 earthquake occured in region: 6 km E Mirabella Imbaccari (CT), on

  • 11-01-2011 03:55:01 (UTC)
  • 11-01-2011 04:55:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.3450, 14.5050 at 20 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Mirabella Imbaccari CT 6 4912 4912
Aidone EN 9 4889 9801
San Michele di Ganzaria CT 10 3245 13046
Caltagirone CT 12 38686 51732
Piazza Armerina EN 13 21886 73618
San Cono CT 14 2697 76315
Raddusa CT 15 3178 79493
Ramacca CT 17 10894 90387
Grammichele CT 19 13418 103805
Mineo CT 19 5159 108964
Valguarnera Caropepe EN 20 7866 116830

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km NE of Gela (75827 inhabitants)
42 Km E of Caltanissetta (63360 inhabitants)
44 Km N of Vittoria (63339 inhabitants)
51 Km NW of Ragusa (73313 inhabitants)
54 Km W of Catania (314555 inhabitants)
59 Km NW of Modica (54633 inhabitants)
66 Km W of Acireale (52622 inhabitants)
77 Km W of Siracusa (122291 inhabitants)
81 Km E of Agrigento (59770 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
Md 1.8
ML 1.8
2011-01-11
03:55:01
37.345 14.505 20 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1159829
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-01-11 03:55:01 ± 0.52
Latitude 37.3450 ± 0.0153
Longitude 14.5050 ± 0.0226
Depth (km) 20 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1159829

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2000
Semi-minor axis of confidence ellipse (meter) 1684
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 287
Circular confidence region, given by single value of horizontal uncertainty (meter) 2624.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 330
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.62413
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1159829
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 22:34:58

Md:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1159829
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 22:34:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FIR.HHE. 2011-01-11T03:55:35.77 10.0 undecidable manual Pg 0 0 0
IV.ATPC.HHN. 2011-01-11T03:55:34.50 10.0 undecidable manual Pg 0 0 0
IV.HAVL.HHE. 2011-01-11T03:55:22.36 0.6 undecidable manual Sg 128 69.2751 0.207 49
IV.SSY.HHE. 2011-01-11T03:55:17.82 0.6 undecidable manual Sg 112 54.4011 -0.407 42
IV.HCRL.HHN. 2011-01-11T03:55:16.41 0.3 undecidable manual Sg 98 47.1195 0.078 76
IV.HAVL.HHE. 2011-01-11T03:55:13.46 0.1 undecidable manual Pg 128 69.2751 0.244 99
IV.SSY.HHE. 2011-01-11T03:55:10.61 0.1 undecidable manual Pg 112 54.4011 -0.339 87
IV.HCRL.HHN. 2011-01-11T03:55:09.90 0.1 undecidable manual Pg 98 47.1195 0.045 100
IV.MEU.SHN. 2011-01-11T03:54:51.58 10.0 undecidable manual Pg 0 0 0
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