Earthquake with magnitude of Md 2.3 on date 01-04-1993 and time 21:17:14 (UTC) in region 4 km W Tusa (ME)

A magnitude Md 2.3 earthquake occured in region: 4 km W Tusa (ME), on

  • 01-04-1993 21:17:14 (UTC)
  • 01-04-1993 23:17:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.9980, 14.1960 at 8 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
Tusa ME 4 2925 2925
Pollina PA 4 2974 5899
Pettineo ME 9 1350 7249
San Mauro Castelverde PA 9 1701 8950
Motta d'Affermo ME 10 739 9689
Castelbuono PA 12 8943 18632
Reitano ME 13 806 19438
Santo Stefano di Camastra ME 14 4694 24132
Geraci Siculo PA 16 1945 26077
Castel di Lucio ME 16 1294 27371
Cefalù PA 16 14393 41764
Mistretta ME 16 4791 46555
Isnello PA 18 1589 48144
Gratteri PA 20 963 49107

Municipalities with at least 50000 inhabitants

An earthquake occurred to
57 Km N of Caltanissetta (63360 inhabitants)
61 Km E of Bagheria (55387 inhabitants)
74 Km E of Palermo (674435 inhabitants)
93 Km NE of Agrigento (59770 inhabitants)
95 Km W of Acireale (52622 inhabitants)
96 Km NW of Catania (314555 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 1993-04-01
21:17:14
37.998 14.196 8 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 182819
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-04-01 21:17:14 ± 0.359
Latitude 37.9980 ± 0.0493
Longitude 14.1960 ± 0.0327
Depth (km) 8 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 182819

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 6187.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 192
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00032
Epicentral distance of station farthest from the epicenter (degree) 0.00356
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 182819
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:51:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MNO.Z. 1993-04-01T21:17:30.39 10.0 undecidable manual SG 99 0.3996 0.92 0
--.MNO.Z. 1993-04-01T21:17:22.87 10.0 undecidable manual PG 99 0.3996 -0.2 0.9
--.CS9.Z. 1993-04-01T21:17:20.13 10.0 undecidable manual SG 238 0.111 0.64 0.2
--.GIB.Z. 1993-04-01T21:17:20.89 10.0 undecidable manual SG 266 0.1221 0.78 0.1
--.GIB.Z. 1993-04-01T21:17:17.62 10.0 undecidable manual PG 266 0.1221 -0.05 1.6
--.PL9.Z. 1993-04-01T21:17:17.76 10.0 undecidable manual SG 261 0.0333 0.33 0.5
--.CS9.Z. 1993-04-01T21:17:16.91 10.0 positive manual PG 238 0.111 -0.4 2
--.PL9.Z. 1993-04-01T21:17:15.92 10.0 positive manual PG 261 0.0333 -0.2 2.8
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