Earthquake with magnitude of Md 2.3 on date 19-04-1985 and time 17:17:14 (Italy) in region 1 km NE Serra de' Conti (AN)

A magnitude Md 2.3 earthquake occured in region: 1 km NE Serra de' Conti (AN), on

  • 19-04-1985 15:17:14 (UTC)
  • 19-04-1985 17:17:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.55, 13.05 at 15 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
Serra de' Conti AN 1 3746 3746
Montecarotto AN 3 1987 5733
Barbara AN 4 1368 7101
Poggio San Marcello AN 5 693 7794
Ostra Vetere AN 6 3311 11105
Castelplanio AN 7 3540 14645
Rosora AN 7 1985 16630
Mergo AN 9 1037 17667
Castelleone di Suasa AN 9 1676 19343
Maiolati Spontini AN 10 6248 25591
Belvedere Ostrense AN 10 2234 27825
Arcevia AN 10 4612 32437
Castelbellino AN 10 4947 37384
Monte Roberto AN 10 3061 40445
San Lorenzo in Campo PU 10 3414 43859
Corinaldo AN 11 4998 48857
Ostra AN 11 6875 55732
Serra San Quirico AN 12 2850 58582
Cupramontana AN 13 4756 63338
San Marcello AN 13 2057 65395
San Paolo di Jesi AN 14 933 66328
Morro d'Alba AN 15 1903 68231
Trecastelli AN 15 7625 75856
Fratte Rosa PU 15 966 76822
Mondavio PU 16 3810 80632
Monte Porzio PU 16 2836 83468
Jesi AN 16 40399 123867
Genga AN 16 1797 125664
Monsano AN 16 3405 129069
Staffolo AN 17 2253 131322
Orciano di Pesaro PU 17 2028 133350
Barchi PU 17 967 134317
Pergola PU 17 6333 140650
Apiro MC 19 2280 142930
Monte San Vito AN 19 6848 149778
Poggio San Vicino MC 19 246 150024
San Giorgio di Pesaro PU 20 1388 151412
Sassoferrato AN 20 7285 158697

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km S of Fano (60888 inhabitants)
39 Km W of Ancona (100861 inhabitants)
42 Km S of Pesaro (94582 inhabitants)
69 Km SE of Rimini (147750 inhabitants)
72 Km NE of Foligno (57155 inhabitants)
73 Km NE of Perugia (166134 inhabitants)
92 Km SE of Cesena (96758 inhabitants)
95 Km E of Arezzo (99543 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 1985-04-19
15:17:14
43.55 13.05 15 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 4989
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-19 15:17:14 ± 1.105
Latitude 43.55 ± 0.05
Longitude 13.05 ± 0.06
Depth (km) 15 ± 6 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 4989

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) 7573.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 292
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) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00081
Epicentral distance of station farthest from the epicenter (degree) 0.00502
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 1
Type of magnitude Md
Reference to an origin 4989
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:09:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.AS1.Z. 1985-04-19T15:17:34.00 10.0 undecidable manual SG 210 0.005 -0.68 0.3
--.CM2.Z. 1985-04-19T15:17:29.20 10.0 undecidable manual SG 169 0.0032 0.98 0.3
--.AS1.Z. 1985-04-19T15:17:26.60 10.0 undecidable manual PG 210 0.005 0.46 1
--.CM2.Z. 1985-04-19T15:17:21.90 10.0 negative manual PG 169 0.0032 -0.52 2.4
--.AR1.Z. 1985-04-19T15:17:20.00 10.0 undecidable manual SG 236 0.0008 -0.52 0.8
--.AR1.Z. 1985-04-19T15:17:18.50 10.0 undecidable manual PG 236 0.0008 0.53 1.2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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