Earthquake with magnitude of Md 2.3 on date 08-02-1985 and time 11:08:02 (Italy) in region Costa Marchigiana Anconetana (Ancona)

A magnitude Md 2.3 earthquake occured in region: Costa Marchigiana Anconetana (Ancona), on

  • 08-02-1985 10:08:02 (UTC)
  • 08-02-1985 11:08:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.76, 13.2 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 5 45027 45027
Mondolfo PU 8 14277 59304
San Costanzo PU 10 4786 64090
Trecastelli AN 12 7625 71715
Monte Porzio PU 15 2836 74551
Montemarciano AN 16 9992 84543
Ostra AN 17 6875 91418
Fano PU 17 60888 152306
Corinaldo AN 17 4998 157304
Morro d'Alba AN 18 1903 159207
San Giorgio di Pesaro PU 18 1388 160595
Monte San Vito AN 19 6848 167443
Piagge PU 19 1022 168465
Belvedere Ostrense AN 20 2234 170699

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km SE of Fano (60888 inhabitants)
28 Km SE of Pesaro (94582 inhabitants)
30 Km NW of Ancona (100861 inhabitants)
61 Km SE of Rimini (147750 inhabitants)
87 Km E of Cesena (96758 inhabitants)
98 Km NE of Perugia (166134 inhabitants)
98 Km NE of Foligno (57155 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 2.3 1985-02-08
10:08:02
43.76 13.2 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 1359
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-08 10:08:02 ± 0.302
Latitude 43.76 ± 0.01
Longitude 13.20 ± 0.02
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 1359

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) 2173.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 328
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00283
Epicentral distance of station farthest from the epicenter (degree) 0.0072
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 1359
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:06:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AS1.Z. 1985-02-08T10:08:31.00 10.0 undecidable manual SG 209 0.0072 0.32 0
--.CM8.Z. 1985-02-08T10:08:23.00 10.0 undecidable manual SG 183 0.0051 -0.11 0.8
--.AS1.Z. 1985-02-08T10:08:19.00 10.0 undecidable manual PG 209 0.0072 0.02 1.5
--.AR1.Z. 1985-02-08T10:08:15.00 10.0 undecidable manual SG 215 0.0028 -0.23 0.3
--.CM8.Z. 1985-02-08T10:08:14.60 10.0 undecidable manual PG 183 0.0051 0 1.8
--.AR1.Z. 1985-02-08T10:08:10.00 10.0 undecidable manual PG 215 0.0028 -0.05 1.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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