Earthquake with magnitude of Md 3.1 on date 02-05-1985 and time 21:43:10 (Italy) in region Costa Marchigiana Anconetana (Ancona)

A magnitude Md 3.1 earthquake occured in region: Costa Marchigiana Anconetana (Ancona), on

  • 02-05-1985 19:43:10 (UTC)
  • 02-05-1985 21:43:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.849, 13.351 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
Senigallia AN 18 45027 45027

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km E of Fano (60888 inhabitants)
29 Km NW of Ancona (100861 inhabitants)
36 Km E of Pesaro (94582 inhabitants)
67 Km E of Rimini (147750 inhabitants)
94 Km E of Cesena (96758 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 1985-05-02
19:43:10
43.849 13.351 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 5769
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-05-02 19:43:10 ± 0.362
Latitude 43.8490 ± 0.0253
Longitude 13.3510 ± 0.0519
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 5769

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) 5027.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 149
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.8
Epicentral distance of station closest to the epicenter (degree) 0.00405
Epicentral distance of station farthest from the epicenter (degree) 0.01837
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

Md:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 7
Type of magnitude Md
Reference to an origin 5769
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:10:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.MNS.Z. 1985-05-02T19:43:58.50 10.0 undecidable manual SN 198 0.0138 0.78 0.5
--.CH1.Z. 1985-05-02T19:43:45.50 10.0 undecidable manual SN 257 0.0093 -0.2 0.7
--.PS9.Z. 1985-05-02T19:43:45.00 10.0 undecidable manual PN? 267 0.0184 0.34 0.5
--.CEY.Z. 1985-05-02T19:43:43.70 10.0 undecidable manual PN 21 0.0183 -0.86 0.9
--.TRI.Z. 1985-05-02T19:43:42.00 10.0 undecidable manual PN 8 0.0169 -0.43 1.3
--.AQU.Z. 1985-05-02T19:43:39.00 10.0 undecidable manual PN 178 0.0134 1.88 0.3
--.MNS.Z. 1985-05-02T19:43:38.50 10.0 undecidable manual PN 198 0.0138 0.72 1.2
--.PO9.Z. 1985-05-02T19:43:35.00 10.0 undecidable manual PN 193 0.0117 0.44 1.6
--.CH1.Z. 1985-05-02T19:43:32.50 10.0 undecidable manual PN 257 0.0093 1.66 0.5
--.ALP.Z. 1985-05-02T19:43:31.40 10.0 undecidable manual PN 171 0.0097 -0.02 1.8
--.AS1.Z. 1985-05-02T19:43:29.50 10.0 undecidable manual PG 212 0.0083 0.52 1.5
--.AR1.Z. 1985-05-02T19:43:26.00 10.0 undecidable manual SG 219 0.004 -1.17 0.6
--.CM2.Z. 1985-05-02T19:43:22.90 10.0 undecidable manual PG 192 0.006 -1.23 1.7
--.AR1.Z. 1985-05-02T19:43:19.00 10.0 undecidable manual PG 219 0.004 -1.15 0.9
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download