Earthquake with magnitude of Md 3.1 on date 07-02-1985 and time 13:06:57 (Italy) in region 8 km SE Bronte (CT)

A magnitude Md 3.1 earthquake occured in region: 8 km SE Bronte (CT), on

  • 07-02-1985 12:06:57 (UTC)
  • 07-02-1985 13:06:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.75, 14.91 at 6 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
Bronte CT 8 19172 19172
Maletto CT 10 3920 23092
Adrano CT 11 36122 59214
Biancavilla CT 12 24007 83221
Ragalna CT 13 3924 87145
Santa Maria di Licodia CT 15 7641 94786
Randazzo CT 15 10900 105686
Maniace CT 16 3765 109451
Nicolosi CT 18 7463 116914
Zafferana Etnea CT 18 9517 126431
Belpasso CT 18 28108 154539
Milo CT 19 1087 155626
PaternĂ² CT 19 48228 203854
Santa Domenica Vittoria ME 20 980 204834
Pedara CT 20 14102 218936

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NW of Acireale (52622 inhabitants)
31 Km NW of Catania (314555 inhabitants)
76 Km SW of Messina (238439 inhabitants)
76 Km SW of Reggio di Calabria (183035 inhabitants)
80 Km E of Caltanissetta (63360 inhabitants)
84 Km NW of Siracusa (122291 inhabitants)
93 Km N of Ragusa (73313 inhabitants)
94 Km NE of Vittoria (63339 inhabitants)
95 Km NE of Gela (75827 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
Rev 1000 Md 3.1
ML-VAX 3.0
1985-02-07
12:06:57
37.75 14.91 6 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 1279
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-07 12:06:57 ± 0.356
Latitude 37.75 ± 0.01
Longitude 14.91 ± 0.02
Depth (km) 6 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 1279

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) 1832.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 121
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.003
Epicentral distance of station farthest from the epicenter (degree) 0.02542
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

Md:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 1279
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:06:25

ML:3

Field Value
Value 3
Uncertainty
Num. used stations 4
Type of magnitude ML
Reference to an origin 1279
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
--.SGO.Z. 1985-02-07T12:07:43.50 10.0 undecidable manual PN 6 0.0254 0.18 0.9
--.ORI.Z. 1985-02-07T12:07:41.00 10.0 undecidable manual PN 27 0.0233 0.89 0.3
--.CSI.Z. 1985-02-07T12:07:36.30 10.0 undecidable manual PN 27 0.0207 0.16 1
--.FA1.Z. 1985-02-07T12:07:35.50 10.0 undecidable manual SN 244 0.0098 0.16 0.6
--.MMN.Z. 1985-02-07T12:07:35.60 10.0 undecidable manual PN 21 0.0207 -0.5 0.7
--.ROI.Z. 1985-02-07T12:07:35.10 10.0 undecidable manual PN 34 0.0201 -0.11 1.1
--.ERC.Z. 1985-02-07T12:07:30.50 10.0 undecidable manual PN 279 0.0166 0.58 0.7
--.US1.Z. 1985-02-07T12:07:26.50 10.0 undecidable manual PN 305 0.0149 -0.82 0.4
--.MSI.Z. 1985-02-07T12:07:22.50 10.0 undecidable manual SG 48 0.0062 0 0.6
--.PA1.Z. 1985-02-07T12:07:22.50 10.0 undecidable manual SG 179 0.0064 -0.98 0.2
--.RCI.Z. 1985-02-07T12:07:21.50 10.0 undecidable manual SG 58 0.0061 -0.91 0.1
--.FA1.Z. 1985-02-07T12:07:20.50 10.0 undecidable manual PN 244 0.0098 1.05 0.2
--.ACL.Z. 1985-02-07T12:07:15.00 10.0 undecidable manual PG 331 0.008 -0.98 0.3
--.GIB.Z. 1985-02-07T12:07:13.00 10.0 negative manual PG 289 0.0066 0.03 3
--.MSI.Z. 1985-02-07T12:07:12.40 10.0 negative manual PG 48 0.0062 0.36 2.4
--.RCI.Z. 1985-02-07T12:07:12.50 10.0 undecidable manual PG 58 0.0061 0.51 0.9
--.PA1.Z. 1985-02-07T12:07:12.50 10.0 negative manual PG 179 0.0064 -0.1 2.9
--.VPL.Z. 1985-02-07T12:07:11.00 10.0 undecidable manual PG 5 0.0057 -0.11 1.5
--.NOV.Z. 1985-02-07T12:07:05.00 10.0 undecidable manual PG 32 0.003 -0.27 1.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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