Earthquake with magnitude of Md 2.1 on date 25-10-1989 and time 18:47:14 (UTC) in region 5 km SE Troina (EN)

A magnitude Md 2.1 earthquake occured in region: 5 km SE Troina (EN), on

  • 25-10-1989 18:47:14 (UTC)
  • 25-10-1989 19:47:14 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7470, 14.6180 at 12 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
Troina EN 5 9373 9373
Gagliano Castelferrato EN 8 3593 12966
Regalbuto EN 11 7277 20243
Cerami EN 12 2006 22249
Agira EN 13 8345 30594
San Teodoro ME 13 1403 31997
CesarĂ² ME 14 2439 34436
Capizzi ME 17 3176 37612
Centuripe EN 18 5470 43082
Nissoria EN 18 3000 46082
Nicosia EN 19 13899 59981
Bronte CT 20 19172 79153

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km NW of Catania (314555 inhabitants)
51 Km W of Acireale (52622 inhabitants)
57 Km NE of Caltanissetta (63360 inhabitants)
82 Km NE of Gela (75827 inhabitants)
89 Km N of Vittoria (63339 inhabitants)
92 Km N of Ragusa (73313 inhabitants)
96 Km SW of Messina (238439 inhabitants)
97 Km NW of Siracusa (122291 inhabitants)
99 Km W of Reggio di Calabria (183035 inhabitants)
100 Km N of Modica (54633 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 2.1
1989-10-25
18:47:14
37.747 14.618 12 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 102939
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-10-25 18:47:14 ± 0.267
Latitude 37.7470 ± 0.0130
Longitude 14.6180 ± 0.0311
Depth (km) 12 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 102939

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) 3092.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 132
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) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00170
Epicentral distance of station farthest from the epicenter (degree) 0.01060
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:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 102939
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:35:55

ML:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 102939
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
--.SOI.Z. 1989-10-25T18:47:53.50 10.0 undecidable manual SN 73 1.1766 0.67 0.5
--.PZI.Z. 1989-10-25T18:47:40.86 10.0 undecidable manual SG 159 0.7326 0.52 0.7
--.MEU.Z. 1989-10-25T18:47:38.63 10.0 undecidable manual SG 165 0.6549 0.88 0.5
--.SOI.Z. 1989-10-25T18:47:35.50 10.0 undecidable manual PN 73 1.1766 -1.21 0.5
--.GIB.Z. 1989-10-25T18:47:34.50 10.0 undecidable manual SG 297 0.5217 1.03 0.4
--.PZI.Z. 1989-10-25T18:47:29.20 10.0 undecidable manual PG 159 0.7326 -0.48 1.8
--.MEU.Z. 1989-10-25T18:47:27.49 10.0 undecidable manual PG 165 0.6549 -0.52 1.9
--.GIB.Z. 1989-10-25T18:47:24.50 10.0 undecidable manual PG 297 0.5217 -1.03 1
--.MNO.Z. 1989-10-25T18:47:23.20 10.0 undecidable manual SG 18 0.1887 0.25 0.9
--.MNO.Z. 1989-10-25T18:47:20.50 10.0 undecidable manual PG 18 0.1887 0.59 1.8
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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