Earthquake with magnitude of Md 2.2 on date 21-07-1993 and time 07:13:08 (UTC) in region 2 km S Pollina (PA)

A magnitude Md 2.2 earthquake occured in region: 2 km S Pollina (PA), on

  • 21-07-1993 07:13:08 (UTC)
  • 21-07-1993 09:13:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.9770, 14.1480 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
Pollina PA 2 2974 2974
Castelbuono PA 7 8943 11917
San Mauro Castelverde PA 8 1701 13618
Tusa ME 8 2925 16543
Pettineo ME 13 1350 17893
Isnello PA 13 1589 19482
Geraci Siculo PA 13 1945 21427
Cefalù PA 13 14393 35820
Motta d'Affermo ME 14 739 36559
Gratteri PA 15 963 37522
Reitano ME 17 806 38328
Castel di Lucio ME 17 1294 39622
Santo Stefano di Camastra ME 18 4694 44316
Lascari PA 18 3588 47904
Collesano PA 19 4054 51958
Mistretta ME 20 4791 56749
Petralia Sottana PA 20 2821 59570

Municipalities with at least 50000 inhabitants

An earthquake occurred to
54 Km N of Caltanissetta (63360 inhabitants)
57 Km E of Bagheria (55387 inhabitants)
71 Km E of Palermo (674435 inhabitants)
89 Km NE of Agrigento (59770 inhabitants)
98 Km NW of Catania (314555 inhabitants)
98 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 2.2
ML-VAX 2.0
1993-07-21
07:13:08
37.977 14.148 5 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 191879
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-07-21 07:13:08 ± 0.179
Latitude 37.9770 ± 0.0097
Longitude 14.1480 ± 0.0055
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 191879

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) 1176.8
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) 0.00008
Epicentral distance of station farthest from the epicenter (degree) 0.00389
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:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 191879
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:00:15

ML:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 191879
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. 1993-07-21T07:13:25.50 10.0 undecidable manual SG 95 0.4329 0.48 0.1
--.MNO.Z. 1993-07-21T07:13:18.00 10.0 undecidable manual PG 95 0.4329 0.06 1
--.GIB.Z. 1993-07-21T07:13:12.49 10.0 undecidable manual SG 277 0.0888 0.17 0.7
--.CS9.Z. 1993-07-21T07:13:11.47 10.0 undecidable manual SG 236 0.0666 -0.02 0.8
--.CS9.Z. 1993-07-21T07:13:10.16 10.0 undecidable manual PG 236 0.0666 0.04 2
--.TU9.Z. 1993-07-21T07:13:10.92 10.0 undecidable manual SG 105 0.0444 0.08 0.7
--.GIB.Z. 1993-07-21T07:13:10.50 10.0 undecidable manual PG 277 0.0888 -0.1 1.8
--.PL9.Z. 1993-07-21T07:13:10.90 10.0 undecidable manual SG 346 0.0111 0.12 0.8
--.PL9.Z. 1993-07-21T07:13:09.15 10.0 undecidable manual PG 346 0.0111 -0.1 1.9
--.TU9.Z. 1993-07-21T07:13:09.18 10.0 undecidable manual PG 105 0.0444 -0.57 0.2
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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