Earthquake with magnitude of Md 2.3 on date 04-07-1993 and time 04:08:46 (UTC) in region 3 km SW Pollina (PA)

A magnitude Md 2.3 earthquake occured in region: 3 km SW Pollina (PA), on

  • 04-07-1993 04:08:46 (UTC)
  • 04-07-1993 06:08:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.9770, 14.1200 at 3 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
Pollina PA 3 2974 2974
Castelbuono PA 5 8943 11917
San Mauro Castelverde PA 9 1701 13618
Tusa ME 11 2925 16543
Isnello PA 11 1589 18132
Cefalù PA 11 14393 32525
Gratteri PA 13 963 33488
Geraci Siculo PA 13 1945 35433
Pettineo ME 15 1350 36783
Lascari PA 16 3588 40371
Motta d'Affermo ME 16 739 41110
Collesano PA 17 4054 45164
Petralia Sottana PA 19 2821 47985
Castel di Lucio ME 19 1294 49279
Reitano ME 20 806 50085
Petralia Soprana PA 20 3360 53445

Municipalities with at least 50000 inhabitants

An earthquake occurred to
54 Km N of Caltanissetta (63360 inhabitants)
55 Km E of Bagheria (55387 inhabitants)
68 Km E of Palermo (674435 inhabitants)
88 Km NE of Agrigento (59770 inhabitants)
100 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
ML-VAX 1.5
1993-07-04
04:08:46
37.977 14.12 3 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 189939
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-07-04 04:08:46 ± 0.313
Latitude 37.9770 ± 0.0121
Longitude 14.1200 ± 0.0077
Depth (km) 3 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 189939

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) 1508.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 131
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00016
Epicentral distance of station farthest from the epicenter (degree) 0.00405
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 189939
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:58:22

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 189939
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MNO.Z. 1993-07-04T04:09:03.12 10.0 undecidable manual SG 95 0.444 -0.79 0
--.MNO.Z. 1993-07-04T04:08:57.30 10.0 undecidable manual PG 95 0.444 0.54 0.1
--.TU9.Z. 1993-07-04T04:08:49.75 10.0 undecidable manual SG 100 0.0666 0.32 0.2
--.GIB.Z. 1993-07-04T04:08:49.50 10.0 undecidable manual SG 280 0.0666 0.06 0.5
--.PL9.Z. 1993-07-04T04:08:48.10 10.0 undecidable manual SG 51 0.0222 0.15 0.4
--.GIB.Z. 1993-07-04T04:08:48.40 10.0 negative manual PG 280 0.0666 -0.09 2.3
--.CS9.Z. 1993-07-04T04:08:48.55 10.0 undecidable manual SG 224 0.0555 -0.21 0.3
--.CS9.Z. 1993-07-04T04:08:47.83 10.0 positive manual PG 224 0.0555 0.09 2.3
--.TU9.Z. 1993-07-04T04:08:47.93 10.0 negative manual PG 100 0.0666 -0.19 1.8
--.PL9.Z. 1993-07-04T04:08:47.90 10.0 negative manual PG 51 0.0222 -0.13 2.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download