Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 06-05-2011 and time 17:38:37 (Italy) in region 9 km S Randazzo (CT)

A magnitude ML 2.2 earthquake occured in region: 9 km S Randazzo (CT), on

  • 06-05-2011 15:38:37 (UTC)
  • 06-05-2011 17:38:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7960, 14.9650 at 27 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 9 3920 3920
Randazzo CT 9 10900 14820
Bronte CT 12 19172 33992
Santa Domenica Vittoria ME 13 980 34972
Moio Alcantara ME 14 717 35689
Milo CT 16 1087 36776
Maniace CT 16 3765 40541
Roccella Valdemone ME 16 666 41207
Malvagna ME 16 733 41940
Zafferana Etnea CT 17 9517 51457
Linguaglossa CT 17 5403 56860
Sant'Alfio CT 17 1582 58442
Castiglione di Sicilia CT 17 3215 61657
Ragalna CT 19 3924 65581
Piedimonte Etneo CT 19 3963 69544
Adrano CT 19 36122 105666
Biancavilla CT 19 24007 129673
Francavilla di Sicilia ME 19 3945 133618
Santa Venerina CT 20 8592 142210

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NW of Acireale (52622 inhabitants)
34 Km NW of Catania (314555 inhabitants)
68 Km SW of Messina (238439 inhabitants)
69 Km SW of Reggio di Calabria (183035 inhabitants)
86 Km E of Caltanissetta (63360 inhabitants)
87 Km NW of Siracusa (122291 inhabitants)
99 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 		ML 2.2 2011-05-06
15:38:37		 37.796 14.965 27 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1208239
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-05-06 15:38:37 ± 0.26
Latitude 37.7960 ± 0.0072
Longitude 14.9650 ± 0.0091
Depth (km) 27 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1208239

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 898
Semi-minor axis of confidence ellipse (meter) 335
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 120
Circular confidence region, given by single value of horizontal uncertainty (meter) 1131.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.52
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.53240
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 11
Magnitude information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 1208239
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:39:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSY.HHE. 2011-05-06T15:39:00.30 10.0 undecidable manual Sg 0 0 0
IV.MRB1.HHZ. 2011-05-06T15:38:59.61 10.0 undecidable manual Pg 0 0 0
IV.HCRL.HHE. 2011-05-06T15:38:56.24 0.6 undecidable manual Sg 174 57.1983 -0.03 48
IV.HAGA.HHN. 2011-05-06T15:38:56.89 0.6 undecidable manual Sg 164 59.0964 0.142 46
IV.GIB.HHN. 2011-05-06T15:38:55.47 10.0 undecidable manual Pg 0 0 0
IV.MPNC.HHZ. 2011-05-06T15:38:55.72 0.6 undecidable manual Sg 41 51.6039 0.863 38
IV.HLNI.HHE. 2011-05-06T15:38:54.16 0.3 undecidable manual Sg 189 50.3163 -0.38 68
IV.HMDC.HHN. 2011-05-06T15:38:54.83 10.0 undecidable manual Pg 0 0 0
IV.SSY.HHE. 2011-05-06T15:38:54.08 10.0 undecidable manual Pg 0 0 0
IV.IFIL.EHZ. 2011-05-06T15:38:54.65 10.0 undecidable manual Pg 0 0 0
IV.HAVL.HHN. 2011-05-06T15:38:54.99 10.0 undecidable manual Pg 0 0 0
IV.GALF.HHN. 2011-05-06T15:38:52.08 0.6 undecidable manual Sg 255 36.2415 0.933 36
IV.PLLN.SHZ. 2011-05-06T15:38:52.65 10.0 undecidable manual Pg 0 0 0
.MCSR.HHE. 2011-05-06T15:38:51.70 0.3 undecidable manual Sg 38 37.7289 0.195 72
IV.HVZN.HHN. 2011-05-06T15:38:50.02 10.0 undecidable manual Pg 0 0 0
IV.MMME.HHZ. 2011-05-06T15:38:50.46 0.6 undecidable manual Sg 59 29.6481 0.781 41
IV.MNO.SHN. 2011-05-06T15:38:49.37 0.3 undecidable manual Sg 302 27.9498 0.044 74
.MUCR.HHN. 2011-05-06T15:38:49.12 0.6 undecidable manual Sg 344 28.5492 -0.321 47
IV.MSRU.HHE. 2011-05-06T15:38:49.68 10.0 undecidable manual Pg 0 0 0
IV.NOV.HHZ. 2011-05-06T15:38:49.55 0.6 undecidable manual Sg 30 29.748 -0.158 49
IV.HAGA.HHN. 2011-05-06T15:38:48.36 0.3 undecidable manual Pg 164 59.0964 -0.401 66
IV.HLNI.HHE. 2011-05-06T15:38:48.37 0.3 undecidable manual Pg 189 50.3163 0.886 55
IV.HCRL.HHE. 2011-05-06T15:38:48.05 0.3 undecidable manual Pg 174 57.1983 -0.433 66
IV.MPNC.HHZ. 2011-05-06T15:38:48.27 0.6 undecidable manual Pg 41 51.6039 0.602 42
IV.CAGR.HHZ. 2011-05-06T15:38:47.66 10.0 undecidable manual Pg 0 0 0
IV.ECNV.HHZ. 2011-05-06T15:38:47.52 10.0 undecidable manual Pg 0 0 0
IV.IVPL.HHE. 2011-05-06T15:38:47.72 10.0 undecidable manual Pg 0 0 0
IV.ESLN.HHE. 2011-05-06T15:38:46.39 0.3 undecidable manual Sg 176 11.3775 -0.116 76
IV.MILZ.HHN. 2011-05-06T15:38:45.59 10.0 undecidable manual Pg 0 0 0
IV.GALF.HHN. 2011-05-06T15:38:45.72 0.3 undecidable manual Pg 255 36.2415 0.194 71
.MCSR.HHE. 2011-05-06T15:38:45.58 0.3 undecidable manual Pg 38 37.7289 -0.154 72
IV.NOV.HHZ. 2011-05-06T15:38:44.13 0.3 undecidable manual Pg 30 29.748 -0.567 66
IV.MNO.SHN. 2011-05-06T15:38:44.42 0.3 undecidable manual Pg 302 27.9498 -0.054 75
IV.MMME.HHZ. 2011-05-06T15:38:44.66 0.1 undecidable manual Pg 59 29.6481 -0.019 100
.MUCR.HHN. 2011-05-06T15:38:43.95 0.3 undecidable manual Pg 344 28.5492 -0.592 66
IV.ESLN.HHE. 2011-05-06T15:38:42.77 0.3 undecidable manual Pg 176 11.3775 -0.078 77
IV.SBPO.HHE. 2011-05-06T15:38:17.05 10.0 undecidable manual Pg 0 0 0
IV.ILLI.HHZ. 2011-05-06T15:38:13.15 10.0 undecidable manual Pg 0 0 0
IV.PSB1.HHZ. 2011-05-06T15:38:05.26 10.0 undecidable manual Pg 0 0 0
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in miniseed + resp format Download