Earthquake with magnitude of ML 1.8 on date 23-10-2006 and time 10:25:35 (Italy) in region 4 km NW Melilli (SR)

A magnitude ML 1.8 earthquake occured in region: 4 km NW Melilli (SR), on

  • 23-10-2006 08:25:35 (UTC)
  • 23-10-2006 10:25:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.2100, 15.1070 at 5 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
Melilli SR 4 13621 13621
Sortino SR 8 8690 22311
Priolo Gargallo SR 9 12091 34402
Augusta SR 10 36305 70707
Carlentini SR 11 17798 88505
Solarino SR 12 8091 96596
Lentini SR 13 24085 120681
Floridia SR 15 22762 143443
Ferla SR 18 2523 145966
Cassaro SR 18 821 146787
Canicattini Bagni SR 20 7109 153896

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NW of Siracusa (122291 inhabitants)
33 Km S of Catania (314555 inhabitants)
45 Km S of Acireale (52622 inhabitants)
46 Km NE of Ragusa (73313 inhabitants)
50 Km NE of Modica (54633 inhabitants)
58 Km NE of Vittoria (63339 inhabitants)
78 Km E of Gela (75827 inhabitants)
98 Km E of Caltanissetta (63360 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 2.1
ML 1.8
2006-10-23
08:25:35
37.21 15.107 5 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 598559
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2006-10-23 08:25:35 ± 0.21
Latitude 37.2100 ± 0.0108
Longitude 15.1070 ± 0.0226
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 598559

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2263
Semi-minor axis of confidence ellipse (meter) 737
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 63
Circular confidence region, given by single value of horizontal uncertainty (meter) 2332.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 180
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.46
Epicentral distance of station closest to the epicenter (degree) 0.05846
Epicentral distance of station farthest from the epicenter (degree) 0.25001
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 598559
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 11:26:20

Md:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations
Type of magnitude Md
Reference to an origin 598559
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 11:26:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.BHE. 2006-10-23T08:25:46.32 0.1 undecidable manual Sg 177 27.75 0.622 42
IV.HAVL.BHE. 2006-10-23T08:25:40.94 0.1 undecidable manual Pg 177 27.75 -0.62 84
IV.AGST.EHZ. 2006-10-23T08:25:40.02 0.1 undecidable manual Sg 64 11.7771 -0.333 47
I1.HAGA.BHZ. 2006-10-23T08:25:39.48 0.1 undecidable manual Sg 27 9.3795 -0.105 49
IV.AGST.EHZ. 2006-10-23T08:25:38.83 0.1 undecidable manual Pg 64 11.7771 0.357 93
IV.SSY.BHZ. 2006-10-23T08:25:38.67 0.3 undecidable manual Sg 207 6.4935 -0.073 37
I1.HAGA.BHZ. 2006-10-23T08:25:38.07 0.1 undecidable manual Pg 27 9.3795 0.041 100
IV.SSY.BHZ. 2006-10-23T08:25:37.67 0.1 undecidable manual Pg 207 6.4935 0.127 99
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