Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 24-08-2011 and time 09:47:45 (Italy) in region 4 km N Maletto (CT)

A magnitude ML 1.9 earthquake occured in region: 4 km N Maletto (CT), on

  • 24-08-2011 07:47:45 (UTC)
  • 24-08-2011 09:47:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8660, 14.8690 at 13 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 4 3920 3920
Maniace CT 5 3765 7685
Randazzo CT 7 10900 18585
Bronte CT 9 19172 37757
Santa Domenica Vittoria ME 10 980 38737
Cesarò ME 14 2439 41176
Floresta ME 14 485 41661
Roccella Valdemone ME 15 666 42327
San Teodoro ME 15 1403 43730
Moio Alcantara ME 16 717 44447
Malvagna ME 17 733 45180
Tortorici ME 19 6435 51615

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km NW of Acireale (52622 inhabitants)
45 Km NW of Catania (314555 inhabitants)
71 Km SW of Messina (238439 inhabitants)
73 Km W of Reggio di Calabria (183035 inhabitants)
82 Km NE of Caltanissetta (63360 inhabitants)
97 Km NW of Siracusa (122291 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 2.3
ML 1.9 		2011-08-24
07:47:45		 37.866 14.869 13 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1276759
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-08-24 07:47:45 ± 0.11
Latitude 37.8660 ± 0.0063
Longitude 14.8690 ± 0.0068
Depth (km) 13 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1276759

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 703
Semi-minor axis of confidence ellipse (meter) 356
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 155
Circular confidence region, given by single value of horizontal uncertainty (meter) 922.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 77
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.77971
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 1276759
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:13:54

Md:2.3

Field Value
Value 2.3
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 1276759
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-06 01:13:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
BA.PZUN.HHN. 2011-08-24T07:48:22.25 10.0 undecidable manual Pg 0 0 0
IV.JOPP.HHN. 2011-08-24T07:48:21.93 10.0 undecidable manual Pg 0 0 0
IV.CELB.HHZ. 2011-08-24T07:48:19.73 10.0 undecidable manual Sg 0 0 0
IV.HMDC.HHN. 2011-08-24T07:48:16.62 10.0 undecidable manual Pg 0 0 0
IV.CELB.HHZ. 2011-08-24T07:48:16.04 10.0 undecidable manual Pg 0 0 0
IV.MCIV.HHZ. 2011-08-24T07:48:15.36 10.0 undecidable manual Sg 0 0 0
IV.GIB.HHE. 2011-08-24T07:48:09.30 10.0 undecidable manual Sg 0 0 0
IV.MPAZ.HHN. 2011-08-24T07:48:09.44 10.0 undecidable manual Pg 0 0 0
IV.MCIV.HHZ. 2011-08-24T07:48:08.03 10.0 undecidable manual Pg 0 0 0
IV.PLLN.SHE. 2011-08-24T07:48:06.86 10.0 undecidable manual Pg 0 0 0
IV.HAVL.HHN. 2011-08-24T07:48:03.57 10.0 undecidable manual Pg 0 0 0
IV.MPNC.HHZ. 2011-08-24T07:48:02.15 0.1 undecidable manual Sg 53 52.503 -0.22 92
IV.MILZ.HHZ. 2011-08-24T07:48:02.98 0.3 undecidable manual Sg 35 55.0005 -0.051 71
IV.GIB.HHE. 2011-08-24T07:48:02.69 10.0 undecidable manual Pg 0 0 0
IV.IFIL.EHN. 2011-08-24T07:48:01.24 10.0 undecidable manual Pg 0 0 0
IV.IACL.HHZ. 2011-08-24T07:48:00.97 0.3 undecidable manual Pg 329 86.5467 0.327 64
IV.MSRU.HHZ. 2011-08-24T07:47:58.32 0.3 undecidable manual Pg 51 71.1732 0.042 70
IV.HCRL.HHE. 2011-08-24T07:47:57.20 0.3 undecidable manual Pg 167 66.2781 -0.322 67
IV.IVPL.HHZ. 2011-08-24T07:47:56.78 0.3 undecidable manual Pg 10 57.3981 0.615 63
IV.ATN.BHZ. 2011-08-24T07:47:56.69 0.6 undecidable manual Pg 58 61.3941 -0.085 47
IV.NOV.HHZ. 2011-08-24T07:47:56.64 0.3 undecidable manual Sg 52 29.4483 0.385 70
IV.MSFR.HHZ. 2011-08-24T07:47:56.10 0.1 undecidable manual Sg 308 30.6471 -0.453 90
IV.HLNI.HHZ. 2011-08-24T07:47:55.87 0.3 undecidable manual Pg 180 57.3981 -0.293 68
IV.MPNC.HHZ. 2011-08-24T07:47:55.29 0.1 undecidable manual Pg 53 52.503 -0.115 94
IV.MILZ.HHZ. 2011-08-24T07:47:55.83 0.3 undecidable manual Pg 35 55.0005 0.045 72
IV.HVZN.HHZ. 2011-08-24T07:47:54.06 10.0 undecidable manual Pg 0 0 0
IV.CAGR.HHZ. 2011-08-24T07:47:54.93 0.3 undecidable manual Pg 230 42.2244 1.104 51
IV.MUCR.HHZ. 2011-08-24T07:47:53.99 0.1 undecidable manual Sg 1 19.6692 0.31 97
IV.ECNV.HHZ. 2011-08-24T07:47:53.00 0.3 undecidable manual Pg 205 33.0447 0.589 65
IV.MCSR.HHZ. 2011-08-24T07:47:53.02 0.3 undecidable manual Pg 55 38.5281 -0.233 71
IV.MNO.SHZ. 2011-08-24T07:47:53.32 0.1 undecidable manual Sg 295 16.872 0.337 97
IV.MMME.HHZ. 2011-08-24T07:47:52.74 0.1 undecidable manual Pg 77 34.5432 0.095 98
IV.NOV.HHZ. 2011-08-24T07:47:51.75 0.1 undecidable manual Pg 52 29.4483 -0.124 98
IV.MSFR.HHZ. 2011-08-24T07:47:51.58 0.3 undecidable manual Pg 308 30.6471 -0.465 68
IV.GALF.HHZ. 2011-08-24T07:47:51.75 0.1 undecidable manual Pg 237 31.6461 -0.453 91
IV.MUCR.HHZ. 2011-08-24T07:47:50.25 0.1 undecidable manual Pg 1 19.6692 -0.137 99
IV.ESLN.HHZ. 2011-08-24T07:47:50.58 0.3 undecidable manual Pg 154 21.2676 -0.046 77
IV.MNO.SHZ. 2011-08-24T07:47:49.86 0.1 undecidable manual Pg 295 16.872 -0.125 100
IV.SACS.HHZ. 2011-08-24T07:47:47.25 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