Earthquake with magnitude of ML 1.8 on date 20-12-2005 and time 09:01:08 (Italy) in region 4 km W Buccheri (SR)

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

  • 20-12-2005 08:01:08 (UTC)
  • 20-12-2005 09:01:08 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.1160, 14.8060 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
Buccheri SR 4 1999 1999
Monterosso Almo RG 5 3032 5031
Vizzini CT 7 6241 11272
Giarratana RG 8 3048 14320
Buscemi SR 8 1051 15371
Licodia Eubea CT 10 3081 18452
Palazzolo Acreide SR 11 8808 27260
Ferla SR 12 2523 29783
Cassaro SR 13 821 30604
Chiaramonte Gulfi RG 13 8238 38842
Francofonte SR 15 12800 51642
Militello in Val di Catania CT 18 7443 59085
Grammichele CT 19 13418 72503
Mineo CT 20 5159 77662

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km N of Ragusa (73313 inhabitants)
29 Km N of Modica (54633 inhabitants)
30 Km NE of Vittoria (63339 inhabitants)
44 Km W of Siracusa (122291 inhabitants)
50 Km E of Gela (75827 inhabitants)
50 Km SW of Catania (314555 inhabitants)
64 Km SW of Acireale (52622 inhabitants)
78 Km SE 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 1.8
2005-12-20
08:01:08
37.116 14.806 5 2014-10-21
12:27:13
Bollettino Sismico Italiano INGV 545099
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2005-12-20 08:01:08 ± 0.65
Latitude 37.1160 ± 0.0198
Longitude 14.8060 ± 0.0316
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 545099

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2842
Semi-minor axis of confidence ellipse (meter) 2158
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 94
Circular confidence region, given by single value of horizontal uncertainty (meter) 3560.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 317
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) 0.56
Epicentral distance of station closest to the epicenter (degree) 0.12680
Epicentral distance of station farthest from the epicenter (degree) 0.29588
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:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 545099
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 10:30:50

Md:2.0

Field Value
Value 2.0
Uncertainty 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 545099
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 10:30:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.BHE. 2005-12-20T08:01:20.67 0.3 undecidable manual Sg 122 32.8449 0.789 30
IV.SSY.BHN. 2005-12-20T08:01:16.43 0.3 undecidable manual Sg 79 24.0537 -0.363 35
IV.HAVL.BHE. 2005-12-20T08:01:14.49 0.3 undecidable manual Pg 122 32.8449 -0.193 71
IV.PZI.SHZ. 2005-12-20T08:01:13.11 0.1 undecidable manual Sg 117 14.0748 -0.24 49
IV.SSY.BHN. 2005-12-20T08:01:13.22 0.1 undecidable manual Pg 79 24.0537 0.272 95
IV.PZI.SHZ. 2005-12-20T08:01:10.90 0.1 undecidable manual Pg 117 14.0748 -0.113 100
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