Earthquake with magnitude of ML 1.3 on date 15-05-2011 and time 04:50:06 (Italy) in region 2 km SE Grammichele (CT)

A magnitude ML 1.3 earthquake occured in region: 2 km SE Grammichele (CT), on

  • 15-05-2011 02:50:06 (UTC)
  • 15-05-2011 04:50:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.1970, 14.6500 at 8 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
Grammichele CT 2 13418 13418
Licodia Eubea CT 7 3081 16499
Mineo CT 9 5159 21658
Vizzini CT 10 6241 27899
Caltagirone CT 13 38686 66585
Mazzarrone CT 15 4078 70663
Militello in Val di Catania CT 16 7443 78106
Monterosso Almo RG 16 3032 81138
Palagonia CT 17 16608 97746
Chiaramonte Gulfi RG 19 8238 105984
Buccheri SR 19 1999 107983

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NE of Vittoria (63339 inhabitants)
31 Km N of Ragusa (73313 inhabitants)
38 Km E of Gela (75827 inhabitants)
39 Km N of Modica (54633 inhabitants)
52 Km SW of Catania (314555 inhabitants)
59 Km W of Siracusa (122291 inhabitants)
62 Km SE of Caltanissetta (63360 inhabitants)
65 Km SW of Acireale (52622 inhabitants)
95 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 1.3
2011-05-15
02:50:06
37.197 14.65 8 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 1213549
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-05-15 02:50:06 ± 0.17
Latitude 37.1970 ± 0.0099
Longitude 14.6500 ± 0.0102
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1213549

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 947
Semi-minor axis of confidence ellipse (meter) 714
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 349
Circular confidence region, given by single value of horizontal uncertainty (meter) 1421.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 133
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 12
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) 0.44516
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 1213549
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:47:05

Md:2.0

Field Value
Value 2.0
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 1213549
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:47:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHE. 2011-05-15T02:50:24.21 0.6 undecidable manual Sg 122 49.4172 1.098 33
IV.AGST.EHE. 2011-05-15T02:50:24.63 10.0 undecidable manual Pg 0 0 0
IV.SSY.HHE. 2011-05-15T02:50:20.38 0.6 undecidable manual Sg 97 37.7289 0.384 45
IV.HLNI.HHE. 2011-05-15T02:50:16.05 0.3 undecidable manual Sg 49 25.8519 -0.014 74
IV.RAFF.HHN. 2011-05-15T02:50:16.75 0.6 undecidable manual Sg 276 25.5522 0.782 40
IV.HMDC.HHE. 2011-05-15T02:50:16.88 0.6 undecidable manual Sg 156 28.9488 -0.215 47
IV.HAVL.HHE. 2011-05-15T02:50:15.86 0.3 undecidable manual Pg 122 49.4172 -0.321 67
IV.SSY.HHE. 2011-05-15T02:50:14.19 0.3 undecidable manual Pg 97 37.7289 -0.192 70
IV.HMDC.HHE. 2011-05-15T02:50:12.19 0.3 undecidable manual Pg 156 28.9488 -0.517 66
IV.HLNI.HHE. 2011-05-15T02:50:11.82 0.1 undecidable manual Pg 49 25.8519 -0.292 93
IV.RAFF.HHN. 2011-05-15T02:50:11.87 0.1 undecidable manual Pg 276 25.5522 -0.186 95
IV.HVZN.HHZ. 2011-05-15T02:50:10.54 0.3 undecidable manual Sg 110 6.1938 0.412 70
IV.HVZN.HHZ. 2011-05-15T02:50:08.80 0.1 undecidable manual Pg 110 6.1938 0.115 100
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