Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 05-05-2011 and time 18:11:12 (Italy) in region 10 km S Randazzo (CT)

A magnitude ML 2.0 earthquake occured in region: 10 km S Randazzo (CT), on

  • 05-05-2011 16:11:12 (UTC)
  • 05-05-2011 18:11:12 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7910, 14.9690 at 28 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
Maletto CT 10 3920 3920
Randazzo CT 10 10900 14820
Bronte CT 12 19172 33992
Santa Domenica Vittoria ME 14 980 34972
Moio Alcantara ME 14 717 35689
Milo CT 15 1087 36776
Zafferana Etnea CT 16 9517 46293
Malvagna ME 16 733 47026
Maniace CT 16 3765 50791
Sant'Alfio CT 16 1582 52373
Roccella Valdemone ME 16 666 53039
Linguaglossa CT 16 5403 58442
Castiglione di Sicilia CT 17 3215 61657
Ragalna CT 18 3924 65581
Piedimonte Etneo CT 19 3963 69544
Adrano CT 19 36122 105666
Biancavilla CT 19 24007 129673
Santa Venerina CT 19 8592 138265
Francavilla di Sicilia ME 19 3945 142210

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NW of Acireale (52622 inhabitants)
34 Km N of Catania (314555 inhabitants)
68 Km SW of Messina (238439 inhabitants)
69 Km SW of Reggio di Calabria (183035 inhabitants)
86 Km NW of Siracusa (122291 inhabitants)
86 Km E of Caltanissetta (63360 inhabitants)
98 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 		Md 2.0
ML 2.0 		2011-05-05
16:11:12		 37.791 14.969 28 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1207289
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-05-05 16:11:12 ± 0.18
Latitude 37.7910 ± 0.0045
Longitude 14.9690 ± 0.0091
Depth (km) 28 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1207289

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 797
Semi-minor axis of confidence ellipse (meter) 314
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 109
Circular confidence region, given by single value of horizontal uncertainty (meter) 943.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.51
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.83907
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 1207289
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:38:32

Md:2.0

Field Value
Value 2.0
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 1207289
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:38:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SBPO.HHE. 2011-05-05T16:11:47.06 10.0 undecidable manual Pg 0 0 0
IV.PRMA.HHN. 2011-05-05T16:11:46.34 10.0 undecidable manual Pg 0 0 0
IV.GIB.HHN. 2011-05-05T16:11:41.59 10.0 undecidable manual Pg 0 0 0
IV.HAVL.HHE. 2011-05-05T16:11:41.03 0.6 undecidable manual Sg 172 93.1401 0.387 42
IV.SSFR.HHE. 2011-05-05T16:11:39.31 10.0 undecidable manual Pg 0 0 0
IV.PLLN.SHN. 2011-05-05T16:11:39.36 10.0 undecidable manual Pg 0 0 0
IV.HVZN.HHE. 2011-05-05T16:11:35.27 10.0 undecidable manual Pg 0 0 0
IV.SSY.HHN. 2011-05-05T16:11:35.30 0.3 undecidable manual Sg 173 70.7736 0.454 64
IV.HCRL.HHN. 2011-05-05T16:11:31.25 0.6 undecidable manual Sg 174 56.5989 0.016 48
IV.HAGA.HHE. 2011-05-05T16:11:31.78 0.3 undecidable manual Sg 164 58.3971 0.085 71
IV.MPNC.HHZ. 2011-05-05T16:11:30.53 0.6 undecidable manual Sg 40 51.8037 0.482 44
IV.MPAZ.HHN. 2011-05-05T16:11:29.31 0.3 undecidable manual Pg 78 92.6406 0.489 61
IV.HLNI.HHE. 2011-05-05T16:11:29.29 0.3 undecidable manual Sg 190 49.8168 -0.263 69
IV.IFIL.EHE. 2011-05-05T16:11:29.52 0.6 undecidable manual Pg 338 92.4408 0.726 37
IV.HAVL.HHE. 2011-05-05T16:11:28.46 0.3 undecidable manual Pg 172 93.1401 -0.441 61
IV.GALF.HHZ. 2011-05-05T16:11:27.28 0.6 undecidable manual Sg 256 36.4413 0.895 37
.MCSR.HHZ. 2011-05-05T16:11:26.90 0.6 undecidable manual Sg 37 38.0286 0.15 48
IV.SSY.HHN. 2011-05-05T16:11:25.29 0.3 undecidable manual Pg 173 70.7736 -0.265 66
IV.VCEL.EHN. 2011-05-05T16:11:25.61 10.0 undecidable manual Pg 0 0 0
IV.MMME.HHZ. 2011-05-05T16:11:25.59 0.6 undecidable manual Sg 57 29.6481 0.687 42
.MUCR.HHZ. 2011-05-05T16:11:24.27 0.6 undecidable manual Sg 343 29.2485 -0.545 45
IV.MNO.SHZ. 2011-05-05T16:11:24.50 0.3 undecidable manual Sg 303 28.6491 -0.193 73
IV.NOV.HHZ. 2011-05-05T16:11:24.67 0.3 undecidable manual Sg 29 30.1476 -0.332 70
IV.HAGA.HHE. 2011-05-05T16:11:23.47 0.3 undecidable manual Pg 164 58.3971 -0.267 67
IV.CAGR.HHZ. 2011-05-05T16:11:23.03 0.3 undecidable manual Pg 246 45.2214 1.17 49
IV.MILZ.HHZ. 2011-05-05T16:11:23.93 0.3 undecidable manual Pg 23 57.9975 0.25 68
IV.HCRL.HHN. 2011-05-05T16:11:23.16 0.3 undecidable manual Pg 174 56.5989 -0.308 67
IV.MPNC.HHZ. 2011-05-05T16:11:22.78 0.3 undecidable manual Pg 40 51.8037 -0.003 72
IV.HLNI.HHE. 2011-05-05T16:11:22.09 0.3 undecidable manual Pg 190 49.8168 -0.407 66
IV.CESI.HHE. 2011-05-05T16:11:21.70 10.0 undecidable manual Pg 0 0 0
IV.FDMO.HHN. 2011-05-05T16:11:21.51 10.0 undecidable manual Pg 0 0 0
IV.GALF.HHZ. 2011-05-05T16:11:20.60 0.1 undecidable manual Pg 256 36.4413 -0.068 98
.MCSR.HHZ. 2011-05-05T16:11:20.74 0.1 undecidable manual Pg 37 38.0286 -0.14 96
IV.ECNV.HHZ. 2011-05-05T16:11:20.91 0.6 undecidable manual Pg 226 31.2465 0.902 38
IV.MMME.HHZ. 2011-05-05T16:11:19.81 0.1 undecidable manual Pg 57 29.6481 -0.004 100
.MUCR.HHZ. 2011-05-05T16:11:19.15 0.1 undecidable manual Pg 343 29.2485 -0.614 87
IV.MNO.SHZ. 2011-05-05T16:11:19.41 0.3 undecidable manual Pg 303 28.6491 -0.282 71
IV.NOV.HHZ. 2011-05-05T16:11:19.62 0.1 undecidable manual Pg 29 30.1476 -0.25 95
IV.FIAM.HHE. 2011-05-05T16:11:18.64 10.0 undecidable manual Pg 0 0 0
IV.TERO.HHN. 2011-05-05T16:11:17.02 10.0 undecidable manual Pg 0 0 0
IV.NRCA.HHN. 2011-05-05T16:11:15.09 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
Waveforms Seismic signals in miniseed + resp format Download