Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.5 on date 07-04-1995 and time 01:23:28 (Italy) in region 4 km N Marianopoli (CL)

A magnitude Md 2.5 earthquake occured in region: 4 km N Marianopoli (CL), on

  • 06-04-1995 23:23:28 (UTC)
  • 07-04-1995 01:23:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.6400, 13.9110 at 26 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Marianopoli CL 5 1906 1906
Villalba CL 6 1633 3539
Vallelunga Pratameno CL 8 3461 7000
Resuttano CL 12 2038 9038
Santa Caterina Villarmosa CL 12 5388 14426
Valledolmo PA 14 3594 18020
Mussomeli CL 15 10780 28800
San Cataldo CL 18 23253 52053
Alimena PA 19 2032 54085
Blufi PA 19 1029 55114
Castellana Sicula PA 20 3411 58525
Acquaviva Platani CL 20 948 59473

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km NW of Caltanissetta (63360 inhabitants)
47 Km NE of Agrigento (59770 inhabitants)
60 Km SE of Bagheria (55387 inhabitants)
71 Km NW of Gela (75827 inhabitants)
72 Km SE of Palermo (674435 inhabitants)
95 Km NW of Vittoria (63339 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 2.5
ML-VAX 2.1 		1995-04-06
23:23:28		 37.64 13.911 26 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 224979
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1995-04-06 23:23:28 ± 0.17
Latitude 37.6400 ± 0.0114
Longitude 13.9110 ± 0.0212
Depth (km) 26 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 224979

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) 2259.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00210
Epicentral distance of station farthest from the epicenter (degree) 0.01303
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 224979
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:32:39

ML:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 5
Type of magnitude ML
Reference to an origin 224979
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
--.MO9.Z. 1995-04-06T23:24:10.68 10.0 undecidable manual SN 74 1.443 0.71 0.3
--.USI.Z. 1995-04-06T23:24:04.49 10.0 undecidable manual SN 331 1.2099 0.2 0.6
--.AU9.Z. 1995-04-06T23:24:03.60 10.0 undecidable manual SN 109 1.11 1.28 0.1
--.PZI.Z. 1995-04-06T23:24:00.20 10.0 undecidable manual SN 124 1.0101 0.8 0.3
--.MEU.Z. 1995-04-06T23:23:56.28 10.0 undecidable manual SN 125 0.8991 -0.55 0.5
--.MO9.Z. 1995-04-06T23:23:52.99 10.0 undecidable manual PN 74 1.443 0.75 0.7
--.ATN.Z. 1995-04-06T23:23:51.50 10.0 undecidable manual PN 66 1.3209 0.97 0.4
--.SA1.Z. 1995-04-06T23:23:48.90 10.0 undecidable manual PN 37 1.1655 -0.3 1.4
--.USI.Z. 1995-04-06T23:23:48.31 10.0 undecidable manual PN 331 1.2099 -0.66 0.9
--.AU9.Z. 1995-04-06T23:23:46.94 10.0 negative manual PN 109 1.11 -0.58 2.2
--.PZI.Z. 1995-04-06T23:23:45.38 10.0 undecidable manual PN 124 1.0101 -0.76 0.8
--.MEU.Z. 1995-04-06T23:23:44.13 10.0 positive manual PN 125 0.8991 -0.53 2.6
--.FAI.Z. 1995-04-06T23:23:43.79 10.0 undecidable manual SG 207 0.4107 -0.53 0.6
--.PL9.Z. 1995-04-06T23:23:43.72 10.0 undecidable manual SG 27 0.3996 -0.06 0.8
--.GIB.Z. 1995-04-06T23:23:42.43 10.0 undecidable manual SG 14 0.3552 -0.33 0.7
--.MNO.Z. 1995-04-06T23:23:42.42 10.0 undecidable manual PN 64 0.6882 0.73 1
--.CS9.Z. 1995-04-06T23:23:41.16 10.0 undecidable manual SG 22 0.3108 -0.55 0.5
--.FAI.Z. 1995-04-06T23:23:38.90 10.0 undecidable manual PG 207 0.4107 0.66 1.1
--.PL9.Z. 1995-04-06T23:23:37.43 10.0 undecidable manual PG 27 0.3996 0.3 1.8
--.GIB.Z. 1995-04-06T23:23:36.31 10.0 undecidable manual PG 14 0.3552 -0.22 1.9
--.MCT.Z. 1995-04-06T23:23:35.36 10.0 undecidable manual PG 264 0.2331 0.68 1.1
--.CS9.Z. 1995-04-06T23:23:35.60 10.0 undecidable manual PG 22 0.3108 -0.32 1.7
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download