Earthquake with magnitude of Md 2.0 on date 12-05-1985 and time 04:28:16 (Italy) in region 6 km W Sassoferrato (AN)

A magnitude Md 2.0 earthquake occured in region: 6 km W Sassoferrato (AN), on

  • 12-05-1985 02:28:16 (UTC)
  • 12-05-1985 04:28:16 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.43, 12.79 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
Sassoferrato AN 6 7285 7285
Serra Sant'Abbondio PU 8 1027 8312
Costacciaro PG 10 1216 9528
Scheggia e Pascelupo PG 10 1393 10921
Frontone PU 11 1300 12221
Sigillo PG 11 2404 14625
Genga AN 12 1797 16422
Fabriano AN 14 31480 47902
Cantiano PU 14 2245 50147
Fossato di Vico PG 15 2840 52987
Arcevia AN 15 4612 57599
Pergola PU 16 6333 63932
Cagli PU 18 8731 72663
Serra San Quirico AN 19 2850 75513
Gubbio PG 19 32216 107729
Cerreto d'Esi AN 20 3817 111546

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km NE of Perugia (166134 inhabitants)
50 Km SW of Fano (60888 inhabitants)
53 Km N of Foligno (57155 inhabitants)
55 Km S of Pesaro (94582 inhabitants)
63 Km W of Ancona (100861 inhabitants)
73 Km S of Rimini (147750 inhabitants)
73 Km E of Arezzo (99543 inhabitants)
90 Km SE of Cesena (96758 inhabitants)
97 Km N of Terni (111501 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 2.0 1985-05-12
02:28:16
43.43 12.79 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 6139
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-05-12 02:28:16 ± 0.216
Latitude 43.43 ± 0.01
Longitude 12.79 ± 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 6139

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) 2415.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 128
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00113
Epicentral distance of station farthest from the epicenter (degree) 0.00931
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2

Field Value
Value 2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 6139
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:10:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.PO9.Z. 1985-05-12T02:28:47.00 10.0 undecidable manual SG 172 0.0077 1.27 0
--.MNS.Z. 1985-05-12T02:28:37.00 10.0 undecidable manual PN 184 0.0093 0.35 1.1
--.PO9.Z. 1985-05-12T02:28:33.00 10.0 undecidable manual PG 172 0.0077 -0.28 1.3
--.AS1.Z. 1985-05-12T02:28:30.00 10.0 undecidable manual SG 195 0.0033 -0.27 0.7
--.CH1.Z. 1985-05-12T02:28:29.50 10.0 undecidable manual PG 288 0.0057 0.22 1.6
--.AS1.Z. 1985-05-12T02:28:23.50 10.0 undecidable manual PG 195 0.0033 -0.85 0.5
--.AR1.Z. 1985-05-12T02:28:22.50 10.0 undecidable manual SG 56 0.0011 0.04 0.8
--.AR1.Z. 1985-05-12T02:28:19.80 10.0 undecidable manual PG 56 0.0011 -0.04 2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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