Earthquake with magnitude of Md 3.0 on date 26-12-1990 and time 22:26:12 (UTC) in region Costa Siracusana (Siracusa)

A magnitude Md 3.0 earthquake occured in region: Costa Siracusana (Siracusa), on

  • 26-12-1990 22:26:12 (UTC)
  • 26-12-1990 23:26:12 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.24, 15.31 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
Augusta SR 8 36305 36305
Priolo Gargallo SR 14 12091 48396
Melilli SR 18 13621 62017

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km N of Siracusa (122291 inhabitants)
35 Km SE of Catania (314555 inhabitants)
43 Km S of Acireale (52622 inhabitants)
62 Km NE of Ragusa (73313 inhabitants)
65 Km NE of Modica (54633 inhabitants)
76 Km E of Vittoria (63339 inhabitants)
96 Km E of Gela (75827 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 3.0
ML-VAX 2.9
1990-12-26
22:26:12
37.24 15.31 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 133069
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1990-12-26 22:26:12 ± 0.846
Latitude 37.24 ± 0.03
Longitude 15.31 ± 0.05
Depth (km) 10 ± 7 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 133069

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) 5420.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 201
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
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) 0.00308
Epicentral distance of station farthest from the epicenter (degree) 0.01328
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

Md:3

Field Value
Value 3
Uncertainty
Num. used stations 6
Type of magnitude Md
Reference to an origin 133069
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:04:00

ML:2.9

Field Value
Value 2.9
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 133069
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 Takeoff_angle Residual Weight
--.FAI.Z. 1990-12-26T22:26:53.25 10.0 undecidable manual SN 271 0.0117 -1.04 0.2
--.SOI.Z. 1990-12-26T22:26:48.13 10.0 undecidable manual SG 34 0.0091 0.77 0.4
--.SC9.Z. 1990-12-26T22:26:47.48 10.0 undecidable manual SN 17 0.0096 -1.06 0.2
--.MSI.Z. 1990-12-26T22:26:46.32 10.0 undecidable manual SG 11 0.0087 0.2 0.6
--.ATN.Z. 1990-12-26T22:26:44.38 10.0 undecidable manual SG 7 0.0083 0.09 0.6
--.MNO.Z. 1990-12-26T22:26:43.40 10.0 undecidable manual SG 324 0.0075 1.26 0.3
--.MCT.Z. 1990-12-26T22:26:40.00 10.0 undecidable manual PN 285 0.0125 1.94 0.1
--.DR2.Z. 1990-12-26T22:26:39.84 10.0 undecidable manual PN 18 0.0133 0.64 0.9
--.FAI.Z. 1990-12-26T22:26:37.20 10.0 negative manual PN 271 0.0117 0.28 2.5
--.GIB.Z. 1990-12-26T22:26:37.82 10.0 undecidable manual PN 306 0.0113 1.69 0.2
--.SOI.Z. 1990-12-26T22:26:33.33 10.0 undecidable manual PG 34 0.0091 0.59 1.2
--.SC9.Z. 1990-12-26T22:26:32.85 10.0 undecidable manual PN 17 0.0096 -0.57 1.1
--.GA2.Z. 1990-12-26T22:26:32.40 10.0 negative manual PG 23 0.0091 -0.23 2.7
--.MSI.Z. 1990-12-26T22:26:31.44 10.0 undecidable manual PG 11 0.0087 -0.59 1.1
--.ATN.Z. 1990-12-26T22:26:30.35 10.0 undecidable manual PG 7 0.0083 -0.63 1.1
--.MNO.Z. 1990-12-26T22:26:28.90 10.0 undecidable manual PG 324 0.0075 -0.63 1
--.MEU.Z. 1990-12-26T22:26:25.57 10.0 undecidable manual SG 250 0.0036 -2.1 0
--.PZI.Z. 1990-12-26T22:26:25.31 10.0 undecidable manual SG 236 0.0031 -0.45 0.5
--.PZI.Z. 1990-12-26T22:26:20.68 10.0 positive manual PG 236 0.0031 0.41 2.8
--.MEU.Z. 1990-12-26T22:26:20.91 10.0 positive manual PG 250 0.0036 -0.47 2.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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