Earthquake with magnitude of ML 1.2 on date 11-09-2011 and time 00:43:05 (Italy) in region 5 km E Mazzarrone (CT)

A magnitude ML 1.2 earthquake occured in region: 5 km E Mazzarrone (CT), on

  • 10-09-2011 22:43:05 (UTC)
  • 11-09-2011 00:43:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.1020, 14.6140 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
Mazzarrone CT 5 4078 4078
Licodia Eubea CT 10 3081 7159
Chiaramonte Gulfi RG 11 8238 15397
Grammichele CT 13 13418 28815
Monterosso Almo RG 13 3032 31847
Acate RG 14 10954 42801
Vizzini CT 14 6241 49042
Giarratana RG 17 3048 52090
Comiso RG 17 30156 82246
Caltagirone CT 18 38686 120932
Vittoria RG 18 63339 184271
Mineo CT 20 5159 189430

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NE of Vittoria (63339 inhabitants)
22 Km NW of Ragusa (73313 inhabitants)
30 Km NW of Modica (54633 inhabitants)
32 Km E of Gela (75827 inhabitants)
61 Km W of Siracusa (122291 inhabitants)
61 Km SW of Catania (314555 inhabitants)
65 Km SE of Caltanissetta (63360 inhabitants)
75 Km SW of Acireale (52622 inhabitants)
94 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 2.0
ML 1.2
2011-09-10
22:43:05
37.102 14.614 6 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1285269
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-09-10 22:43:05 ± 0.18
Latitude 37.1020 ± 0.0027
Longitude 14.6140 ± 0.0124
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1285269

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1067
Semi-minor axis of confidence ellipse (meter) 214
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 88
Circular confidence region, given by single value of horizontal uncertainty (meter) 1140.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 263
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.42898
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1285269
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:25:56

Md:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 1285269
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:25:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HLNI.HHE. 2011-09-10T22:43:17.55 0.3 undecidable manual Sg 40 35.6421 0.001 73
IV.HAVL.HHN. 2011-09-10T22:43:14.52 0.3 undecidable manual Pg 109 47.619 0.053 71
IV.HLNI.HHE. 2011-09-10T22:43:12.12 0.1 undecidable manual Pg 40 35.6421 -0.139 95
IV.HMDC.HHZ. 2011-09-10T22:43:12.79 0.3 undecidable manual Sg 137 21.7671 -0.066 74
IV.HVZN.HHN. 2011-09-10T22:43:09.81 0.3 undecidable manual Sg 47 12.3765 0.052 75
IV.HMDC.HHZ. 2011-09-10T22:43:09.61 0.3 undecidable manual Pg 137 21.7671 0.061 74
IV.ILLI.HHZ. 2011-09-10T22:43:09.36 10.0 undecidable manual Pg 0 0 0
IV.HVZN.HHN. 2011-09-10T22:43:07.83 0.1 undecidable manual Pg 47 12.3765 0.067 100
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