Earthquake with magnitude of Md 3.0 on date 25-12-1985 and time 11:47:29 (Italy) in region 3 km NW Acireale (CT)

A magnitude Md 3.0 earthquake occured in region: 3 km NW Acireale (CT), on

  • 25-12-1985 10:47:29 (UTC)
  • 25-12-1985 11:47:29 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.635, 15.146 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
Acireale CT 3 52622 52622
Aci Catena CT 4 29851 82473
Aci Sant'Antonio CT 4 17984 100457
Viagrande CT 5 8563 109020
Aci Bonaccorsi CT 5 3524 112544
Santa Venerina CT 6 8592 121136
Trecastagni CT 6 10910 132046
Valverde CT 6 7840 139886
Zafferana Etnea CT 8 9517 149403
Pedara CT 8 14102 163505
San Giovanni la Punta CT 8 23060 186565
San Gregorio di Catania CT 8 11966 198531
Aci Castello CT 9 18723 217254
Tremestieri Etneo CT 9 20589 237843
Sant'Agata li Battiati CT 10 9479 247322
Milo CT 10 1087 248409
Mascalucia CT 11 31958 280367
Nicolosi CT 11 7463 287830
Gravina di Catania CT 11 25838 313668
Giarre CT 11 27659 341327
Riposto CT 12 14838 356165
Sant'Alfio CT 12 1582 357747
San Pietro Clarenza CT 13 7743 365490
Camporotondo Etneo CT 14 5023 370513
Mascali CT 14 14282 384795
Catania CT 15 314555 699350
Belpasso CT 16 28108 727458
Misterbianco CT 18 49410 776868
Ragalna CT 18 3924 780792
Fiumefreddo di Sicilia CT 19 9623 790415
Piedimonte Etneo CT 20 3963 794378

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km NW of Acireale (52622 inhabitants)
15 Km NE of Catania (314555 inhabitants)
65 Km N of Siracusa (122291 inhabitants)
69 Km SW of Reggio di Calabria (183035 inhabitants)
72 Km SW of Messina (238439 inhabitants)
87 Km NE of Ragusa (73313 inhabitants)
93 Km NE of Modica (54633 inhabitants)
93 Km NE of Vittoria (63339 inhabitants)
97 Km E of Caltanissetta (63360 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 1985-12-25
10:47:29
37.635 15.146 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 18919
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-12-25 10:47:29 ± 0.225
Latitude 37.6350 ± 0.0172
Longitude 15.1460 ± 0.0289
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 18919

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) 3188
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 150
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
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) 0.00534
Epicentral distance of station farthest from the epicenter (degree) 0.02631
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

Md:3

Field Value
Value 3
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 18919
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:21:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.SGO.Z. 1985-12-25T10:48:17.00 10.0 undecidable manual PN 2 0.0263 0.81 0.5
--.CSI.Z. 1985-12-25T10:48:09.00 10.0 undecidable manual PN 22 0.0209 1.02 0.4
--.ROI.Z. 1985-12-25T10:48:07.00 10.0 undecidable manual PN 29 0.0201 0.34 1
--.GIB.Z. 1985-12-25T10:48:03.50 10.0 undecidable manual SG 292 0.0085 1.06 0.2
--.CZI.Z. 1985-12-25T10:48:00.00 10.0 undecidable manual PN 25 0.0158 -0.21 1.3
--.FAI.Z. 1985-12-25T10:47:52.50 10.0 undecidable manual PN 253 0.011 -0.36 1.3
--.PZI.Z. 1985-12-25T10:47:52.00 10.0 undecidable manual SG 195 0.0053 0.85 0.3
--.DR2.Z. 1985-12-25T10:47:52.50 10.0 undecidable manual PN 31 0.0106 0.23 1.4
--.GIB.Z. 1985-12-25T10:47:48.00 10.0 negative manual PG 292 0.0085 -0.72 1.7
--.GA2.Z. 1985-12-25T10:47:44.30 10.0 undecidable manual PG 44 0.0068 -0.83 0.7
--.MSI.Z. 1985-12-25T10:47:42.00 10.0 undecidable manual PG 29 0.0058 -1.19 0.3
--.PZI.Z. 1985-12-25T10:47:42.00 10.0 positive manual PG 195 0.0053 -0.2 2.9
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