Earthquake with magnitude of Md 2.1 on date 12-09-1993 and time 05:35:33 (UTC) in region W Pollina (PA)

A magnitude Md 2.1 earthquake occured in region: W Pollina (PA), on

  • 12-09-1993 05:35:33 (UTC)
  • 12-09-1993 07:35:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.9950, 14.1440 at 4 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 0 2974 2974
Castelbuono PA 8 8943 11917
Tusa ME 8 2925 14842
San Mauro Castelverde PA 10 1701 16543
Cefalù PA 12 14393 30936
Isnello PA 13 1589 32525
Pettineo ME 13 1350 33875
Motta d'Affermo ME 14 739 34614
Geraci Siculo PA 15 1945 36559
Gratteri PA 15 963 37522
Lascari PA 18 3588 41110
Reitano ME 18 806 41916
Santo Stefano di Camastra ME 18 4694 46610
Castel di Lucio ME 19 1294 47904
Collesano PA 20 4054 51958

Municipalities with at least 50000 inhabitants

An earthquake occurred to
56 Km E of Bagheria (55387 inhabitants)
56 Km N of Caltanissetta (63360 inhabitants)
70 Km E of Palermo (674435 inhabitants)
91 Km NE of Agrigento (59770 inhabitants)
99 Km NW of Catania (314555 inhabitants)
99 Km W of Acireale (52622 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-VAX 1.7
1993-09-12
05:35:33
37.995 14.144 4 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 196329
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-09-12 05:35:33 ± 0.208
Latitude 37.9950 ± 0.0107
Longitude 14.1440 ± 0.0068
Depth (km) 4 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 196329

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) 1335.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 214
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) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.00081
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 196329
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:04:29

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 196329
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
--.TU9.Z. 1993-09-12T05:35:36.38 10.0 undecidable manual SG 120 0.0555 0.27 0.1
--.CS9.Z. 1993-09-12T05:35:36.69 10.0 undecidable manual SG 224 0.0777 -0.07 0.4
--.GIB.Z. 1993-09-12T05:35:36.76 10.0 undecidable manual SG 266 0.0888 -0.41 0
--.CS9.Z. 1993-09-12T05:35:35.32 10.0 positive manual PG 224 0.0777 0.03 2.1
--.GIB.Z. 1993-09-12T05:35:35.63 10.0 positive manual PG 266 0.0888 0.1 1.4
--.PL9.Z. 1993-09-12T05:35:34.84 10.0 undecidable manual SG 188 0.04 0.5
--.PL9.Z. 1993-09-12T05:35:34.10 10.0 negative manual PG 188 -0.06 2.3
--.TU9.Z. 1993-09-12T05:35:34.77 10.0 negative manual PG 120 0.0555 -0.15 1.3
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