Earthquake with magnitude of ML 1.5 on date 30-08-2011 and time 23:50:56 (Italy) in region 7 km SW Licodia Eubea (CT)

A magnitude ML 1.5 earthquake occured in region: 7 km SW Licodia Eubea (CT), on

  • 30-08-2011 21:50:56 (UTC)
  • 30-08-2011 23:50:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.1050, 14.6530 at 6 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
Licodia Eubea CT 7 3081 3081
Mazzarrone CT 8 4078 7159
Chiaramonte Gulfi RG 9 8238 15397
Monterosso Almo RG 10 3032 18429
Vizzini CT 11 6241 24670
Grammichele CT 12 13418 38088
Giarratana RG 14 3048 41136
Acate RG 17 10954 52090
Buccheri SR 18 1999 54089
Comiso RG 18 30156 84245
Mineo CT 18 5159 89404
Caltagirone CT 19 38686 128090
Vittoria RG 20 63339 191429

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NE of Vittoria (63339 inhabitants)
21 Km NW of Ragusa (73313 inhabitants)
29 Km NW of Modica (54633 inhabitants)
36 Km E of Gela (75827 inhabitants)
57 Km W of Siracusa (122291 inhabitants)
59 Km SW of Catania (314555 inhabitants)
68 Km SE of Caltanissetta (63360 inhabitants)
73 Km SW of Acireale (52622 inhabitants)
97 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 1.9
ML 1.5
2011-08-30
21:50:56
37.105 14.653 6 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1279189
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-08-30 21:50:56 ± 0.24
Latitude 37.1050 ± 0.0072
Longitude 14.6530 ± 0.0113
Depth (km) 6 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1279189

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 941
Semi-minor axis of confidence ellipse (meter) 447
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 249
Circular confidence region, given by single value of horizontal uncertainty (meter) 1280.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 152
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 8
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) 0.33904
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 1279189
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:17:20

Md:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1279189
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:17:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.IFIL.EHE. 2011-08-30T21:51:17.51 10.0 undecidable manual Pg 0 0 0
IV.SSY.HHN. 2011-08-30T21:51:09.87 0.3 undecidable manual Sg 81 37.629 0.444 66
IV.SSY.HHN. 2011-08-30T21:51:03.90 0.3 undecidable manual Pg 81 37.629 0.075 71
IV.HMDC.HHE. 2011-08-30T21:51:03.41 0.3 undecidable manual Sg 145 19.869 -0.018 74
IV.HLNI.HHN. 2011-08-30T21:51:02.54 0.1 undecidable manual Pg 36 33.1446 -0.404 89
IV.RAFF.HHE. 2011-08-30T21:51:02.36 0.1 undecidable manual Pg 297 28.749 0.278 92
IV.HMDC.HHE. 2011-08-30T21:51:00.16 0.3 undecidable manual Pg 145 19.869 -0.203 71
IV.HVZN.HHZ. 2011-08-30T21:51:00.27 0.1 undecidable manual Sg 34 9.7791 0.045 100
IV.HVZN.HHZ. 2011-08-30T21:50:58.37 0.1 undecidable manual Pg 34 9.7791 -0.147 98
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