Earthquake with magnitude of Md 3.0 on date 28-05-1985 and time 12:30:59 (UTC) in region 7 km NE Città di Castello (PG)

A magnitude Md 3.0 earthquake occured in region: 7 km NE Città di Castello (PG), on

  • 28-05-1985 12:30:59 (UTC)
  • 28-05-1985 14:30:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.52, 12.27 at 8 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
Città di Castello PG 7 39913 39913
San Giustino PG 8 11297 51210
Sansepolcro AR 12 15884 67094
Monte Santa Maria Tiberina PG 12 1183 68277
Citerna PG 12 3531 71808
Monterchi AR 13 1757 73565
Apecchio PU 13 1882 75447
Mercatello sul Metauro PU 16 1378 76825
Borgo Pace PU 16 606 77431
Pietralunga PG 16 2111 79542
Anghiari AR 17 5638 85180
Montone PG 18 1680 86860

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km E of Arezzo (99543 inhabitants)
47 Km N of Perugia (166134 inhabitants)
65 Km SW of Rimini (147750 inhabitants)
68 Km SW of Pesaro (94582 inhabitants)
69 Km S of Cesena (96758 inhabitants)
71 Km SW of Fano (60888 inhabitants)
72 Km NW of Foligno (57155 inhabitants)
79 Km E of Siena (53903 inhabitants)
81 Km S of Forlì (117913 inhabitants)
86 Km E of Firenze (382808 inhabitants)
91 Km SE of Faenza (58541 inhabitants)
92 Km E of Scandicci (50609 inhabitants)
100 Km S of Ravenna (159116 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 3.0 1985-05-28
12:30:59
43.52 12.27 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 7429
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-05-28 12:30:59 ± 0.297
Latitude 43.52 ± 0.02
Longitude 12.27 ± 0.02
Depth (km) 9 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 7429

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) 3389.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 156
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00227
Epicentral distance of station farthest from the epicenter (degree) 0.01052
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:3

Field Value
Value 3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 7429
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:11:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CM2.Z. 1985-05-28T12:31:25.50 10.0 undecidable manual SG 116 0.0064 0.61 0.2
--.MNS.Z. 1985-05-28T12:31:22.00 10.0 undecidable manual PN 164 0.0105 -0.19 1
--.PO9.Z. 1985-05-28T12:31:20.50 10.0 undecidable manual PN 152 0.0096 -0.2 1.1
--.AS1.Z. 1985-05-28T12:31:19.00 10.0 undecidable manual SG 148 0.0048 -0.14 0.6
--.AR1.Z. 1985-05-28T12:31:18.00 10.0 undecidable manual SG 91 0.0044 0.32 0.5
--.CM2.Z. 1985-05-28T12:31:13.60 10.0 undecidable manual PG 116 0.0064 -0.69 0.3
--.AS1.Z. 1985-05-28T12:31:11.50 10.0 undecidable manual PG 148 0.0048 0.52 0.6
--.AR1.Z. 1985-05-28T12:31:10.00 10.0 undecidable manual PG 91 0.0044 -0.13 1.6
--.CH1.Z. 1985-05-28T12:31:10.20 10.0 undecidable manual SG 295 0.0023 0.02 1
--.CH1.Z. 1985-05-28T12:31:06.00 10.0 positive manual PG 295 0.0023 0.2 3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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