Earthquake with magnitude of Md 2.2 on date 20-06-1993 and time 05:35:32 (UTC) in region 2 km SW Pollina (PA)

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

  • 20-06-1993 05:35:32 (UTC)
  • 20-06-1993 07:35:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.9830, 14.1400 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 2 2974 2974
Castelbuono PA 7 8943 11917
San Mauro Castelverde PA 9 1701 13618
Tusa ME 9 2925 16543
Cefalù PA 12 14393 30936
Isnello PA 12 1589 32525
Pettineo ME 13 1350 33875
Geraci Siculo PA 14 1945 35820
Motta d'Affermo ME 14 739 36559
Gratteri PA 15 963 37522
Lascari PA 18 3588 41110
Reitano ME 18 806 41916
Castel di Lucio ME 18 1294 43210
Santo Stefano di Camastra ME 19 4694 47904
Collesano PA 19 4054 51958
Petralia Sottana PA 20 2821 54779

Municipalities with at least 50000 inhabitants

An earthquake occurred to
55 Km N of Caltanissetta (63360 inhabitants)
56 Km E of Bagheria (55387 inhabitants)
70 Km E of Palermo (674435 inhabitants)
89 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 2.2 1993-06-20
05:35:32
37.983 14.14 4 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 187879
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-06-20 05:35:32 ± 0.09
Latitude 37.9830 ± 0.0055
Longitude 14.1400 ± 0.0036
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 187879

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) 686.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 133
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
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 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 187879
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:56:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MNO.Z. 1993-06-20T05:35:42.29 10.0 undecidable manual PG 96 0.4329 0.01 0.5
--.GIB.Z. 1993-06-20T05:35:36.29 10.0 undecidable manual SG 274 0.0777 0.12 0.3
--.CS9.Z. 1993-06-20T05:35:35.35 10.0 undecidable manual SG 229 0.0666 -0.17 0.1
--.CS9.Z. 1993-06-20T05:35:34.29 10.0 positive manual PG 229 0.0666 0.06 2.2
--.GIB.Z. 1993-06-20T05:35:34.53 10.0 undecidable manual PG 274 0.0777 -0.08 1
--.PL9.Z. 1993-06-20T05:35:33.24 10.0 positive manual PG 19 0.0111 -0.05 2.4
--.PL9.Z. 1993-06-20T05:35:33.93 10.0 undecidable manual SG 19 0.0111 0.04 0.5
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