Earthquake with magnitude of Md 3.1 on date 31-08-1985 and time 15:22:41 (Italy) in region 2 km SE Milo (CT)

A magnitude Md 3.1 earthquake occured in region: 2 km SE Milo (CT), on

  • 31-08-1985 13:22:41 (UTC)
  • 31-08-1985 15:22:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.713, 15.131 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
Milo CT 2 1087 1087
Santa Venerina CT 3 8592 9679
Zafferana Etnea CT 3 9517 19196
Sant'Alfio CT 4 1582 20778
Giarre CT 5 27659 48437
Riposto CT 7 14838 63275
Mascali CT 8 14282 77557
Fiumefreddo di Sicilia CT 11 9623 87180
Piedimonte Etneo CT 12 3963 91143
Trecastagni CT 12 10910 102053
Acireale CT 12 52622 154675
Viagrande CT 12 8563 163238
Aci Sant'Antonio CT 12 17984 181222
Aci Catena CT 12 29851 211073
Pedara CT 12 14102 225175
Aci Bonaccorsi CT 13 3524 228699
Nicolosi CT 14 7463 236162
Linguaglossa CT 14 5403 241565
Valverde CT 15 7840 249405
Calatabiano CT 15 5308 254713
San Giovanni la Punta CT 15 23060 277773
Tremestieri Etneo CT 16 20589 298362
San Gregorio di Catania CT 17 11966 310328
Mascalucia CT 17 31958 342286
Aci Castello CT 17 18723 361009
Sant'Agata li Battiati CT 18 9479 370488
Gravina di Catania CT 18 25838 396326
San Pietro Clarenza CT 18 7743 404069
Gaggi ME 18 3184 407253
Belpasso CT 19 28108 435361
Castiglione di Sicilia CT 19 3215 438576
Ragalna CT 19 3924 442500
Giardini-Naxos ME 19 9415 451915
Camporotondo Etneo CT 19 5023 456938

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km N of Acireale (52622 inhabitants)
24 Km N of Catania (314555 inhabitants)
63 Km SW of Reggio di Calabria (183035 inhabitants)
65 Km SW of Messina (238439 inhabitants)
74 Km N of Siracusa (122291 inhabitants)
94 Km NE of Ragusa (73313 inhabitants)
97 Km E of Caltanissetta (63360 inhabitants)
100 Km NE of Vittoria (63339 inhabitants)
100 Km NE 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 3.1 1985-08-31
13:22:41
37.713 15.131 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 12559
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-08-31 13:22:41 ± 0.279
Latitude 37.7130 ± 0.0188
Longitude 15.1310 ± 0.0252
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 12559

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) 3051
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 138
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) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00502
Epicentral distance of station farthest from the epicenter (degree) 0.02558
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

Md:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 12559
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:15:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.SGO.Z. 1985-08-31T13:23:26.50 10.0 undecidable manual PN 2 0.0256 -0.04 0.8
--.GIB.Z. 1985-08-31T13:23:12.00 10.0 undecidable manual SG 288 0.0082 -0.64 0.6
--.SE2.Z. 1985-08-31T13:23:11.60 10.0 undecidable manual PN 43 0.0161 -0.49 0.9
--.RI2.Z. 1985-08-31T13:23:06.40 10.0 undecidable manual PN 56 0.0115 1.43 0.3
--.PA1.Z. 1985-08-31T13:23:06.00 10.0 undecidable manual SG 194 0.0063 0.15 0.9
--.RCI.Z. 1985-08-31T13:23:03.00 10.0 undecidable manual SG 45 0.005 1.62 0.1
--.GIB.Z. 1985-08-31T13:23:00.00 10.0 negative manual PG 288 0.0082 0.57 2.3
--.PA1.Z. 1985-08-31T13:22:55.00 10.0 undecidable manual PG 194 0.0063 -0.51 1.2
--.RCI.Z. 1985-08-31T13:22:53.00 10.0 undecidable manual PG 45 0.005 0.07 1.5
--.MSI.Z. 1985-08-31T13:22:52.50 10.0 negative manual PG 34 0.0053 -0.99 1.4
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