Earthquake with magnitude of Md 2.4 on date 07-09-1989 and time 12:28:36 (Italy) in region 3 km SE Alimena (PA)

A magnitude Md 2.4 earthquake occured in region: 3 km SE Alimena (PA), on

  • 07-09-1989 10:28:36 (UTC)
  • 07-09-1989 12:28:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.6740, 14.1360 at 10 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
Alimena PA 3 2032 2032
Bompietro PA 9 1401 3433
Resuttano CL 9 2038 5471
Villarosa EN 10 4937 10408
Blufi PA 10 1029 11437
Santa Caterina Villarmosa CL 13 5388 16825
Petralia Soprana PA 14 3360 20185
Castellana Sicula PA 15 3411 23596
Gangi PA 15 6811 30407
Petralia Sottana PA 15 2821 33228
Calascibetta EN 15 4528 37756
Enna EN 17 28019 65775
Polizzi Generosa PA 20 3407 69182

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km N of Caltanissetta (63360 inhabitants)
63 Km NE of Agrigento (59770 inhabitants)
68 Km N of Gela (75827 inhabitants)
71 Km SE of Bagheria (55387 inhabitants)
84 Km SE of Palermo (674435 inhabitants)
86 Km W of Catania (314555 inhabitants)
88 Km NW of Vittoria (63339 inhabitants)
91 Km W of Acireale (52622 inhabitants)
98 Km NW of Ragusa (73313 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 2.4
ML-VAX 1.5
1989-09-07
10:28:36
37.674 14.136 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 98989
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-09-07 10:28:36 ± 0.546
Latitude 37.6740 ± 0.0383
Longitude 14.1360 ± 0.0481
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 98989

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) 6009.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 148
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) 1.2
Epicentral distance of station closest to the epicenter (degree) 0.00291
Epicentral distance of station farthest from the epicenter (degree) 0.01408
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:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 98989
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:32:29

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 98989
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. 1989-09-07T10:29:18.57 10.0 undecidable manual SN 74 1.2654 0.87 0.6
--.MO9.Z. 1989-09-07T10:29:02.40 10.0 undecidable manual PN 74 1.2654 1.55 0.9
--.SOI.Z. 1989-09-07T10:29:02.49 10.0 undecidable manual PN 74 1.5651 -2.02 0.5
--.FAI.Z. 1989-09-07T10:28:58.00 10.0 undecidable manual SG 222 0.5439 1.58 0.5
--.GIB.Z. 1989-09-07T10:28:50.77 10.0 undecidable manual SG 344 0.3219 1.38 0.5
--.MNO.Z. 1989-09-07T10:28:47.35 10.0 undecidable manual PG 59 0.4995 -0.2 2.2
--.FAI.Z. 1989-09-07T10:28:46.56 10.0 undecidable manual PG 222 0.5439 -1.64 1.1
--.GIB.Z. 1989-09-07T10:28:43.60 10.0 undecidable manual PG 344 0.3219 -1.08 1.6
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