Earthquake with magnitude of ML 2.1 on date 20-01-2006 and time 15:57:54 (UTC) in region 5 km SW Melilli (SR)

A magnitude ML 2.1 earthquake occured in region: 5 km SW Melilli (SR), on

  • 20-01-2006 15:57:54 (UTC)
  • 20-01-2006 16:57:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.1450, 15.0930 at 10 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 5 13621 13621
Solarino SR 5 8091 21712
Sortino SR 6 8690 30402
Floridia SR 9 22762 53164
Priolo Gargallo SR 9 12091 65255
Canicattini Bagni SR 12 7109 72364
Cassaro SR 14 821 73185
Ferla SR 14 2523 75708
Augusta SR 15 36305 112013
Carlentini SR 16 17798 129811
Lentini SR 18 24085 153896
Palazzolo Acreide SR 19 8808 162704
Buscemi SR 20 1051 163755

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NW of Siracusa (122291 inhabitants)
40 Km S of Catania (314555 inhabitants)
40 Km NE of Ragusa (73313 inhabitants)
43 Km NE of Modica (54633 inhabitants)
53 Km S of Acireale (52622 inhabitants)
54 Km E of Vittoria (63339 inhabitants)
75 Km E of Gela (75827 inhabitants)
99 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 2.0
ML 2.1
2006-01-20
15:57:54
37.145 15.093 10 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 550469
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2006-01-20 15:57:54 ± 0.21
Latitude 37.1450 ± 0.0108
Longitude 15.0930 ± 0.0271
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 550469

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2526
Semi-minor axis of confidence ellipse (meter) 1053
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 73
Circular confidence region, given by single value of horizontal uncertainty (meter) 2683.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 137
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.01979
Epicentral distance of station farthest from the epicenter (degree) 0.18706
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 550469
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 10:36:17

Md:2.0

Field Value
Value 2.0
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 550469
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 10:36:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.BHN. 2006-01-20T15:58:02.64 0.1 undecidable manual Sg 173 20.7681 0.582 43
IV.AGST.SHN. 2006-01-20T15:58:01.04 0.1 undecidable manual Sg 44 17.1717 0.079 49
IV.AGST.SHN. 2006-01-20T15:57:58.03 0.1 undecidable manual Pg 44 17.1717 -0.019 99
IV.HAVL.BHN. 2006-01-20T15:57:58.28 0.1 undecidable manual Pg 173 20.7681 -0.403 90
IV.SSY.BHZ. 2006-01-20T15:57:58.11 0.3 undecidable manual Sg 310 2.1978 0.489 34
IV.SSY.BHZ. 2006-01-20T15:57:56.05 0.1 undecidable manual Pg 310 2.1978 -0.071 100
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