Earthquake with magnitude of Md 2.2 on date 19-02-1985 and time 18:01:45 (Italy) in region 1 km N Sigillo (PG)

A magnitude Md 2.2 earthquake occured in region: 1 km N Sigillo (PG), on

  • 19-02-1985 17:01:45 (UTC)
  • 19-02-1985 18:01:45 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.34, 12.74 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
Sigillo PG 1 2404 2404
Costacciaro PG 3 1216 3620
Fossato di Vico PG 5 2840 6460
Scheggia e Pascelupo PG 10 1393 7853
Gualdo Tadino PG 12 15208 23061
Gubbio PG 13 32216 55277
Fabriano AN 13 31480 86757
Sassoferrato AN 15 7285 94042
Serra Sant'Abbondio PU 17 1027 95069
Cantiano PU 18 2245 97314
Genga AN 19 1797 99111
Esanatoglia MC 19 2034 101145
Frontone PU 20 1300 102445

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km NE of Perugia (166134 inhabitants)
42 Km N of Foligno (57155 inhabitants)
61 Km SW of Fano (60888 inhabitants)
65 Km S of Pesaro (94582 inhabitants)
70 Km W of Ancona (100861 inhabitants)
71 Km E of Arezzo (99543 inhabitants)
82 Km S of Rimini (147750 inhabitants)
87 Km N of Terni (111501 inhabitants)
98 Km SE 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
Rev 1000 Md 2.2 1985-02-19
17:01:45
43.34 12.74 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 2009
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-02-19 17:01:45 ± 0.358
Latitude 43.34 ± 0.02
Longitude 12.74 ± 0.03
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 2009

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) 3253.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 208
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00194
Epicentral distance of station farthest from the epicenter (degree) 0.00696
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 2009
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:07:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.PO9.Z. 1985-02-19T17:02:13.50 10.0 undecidable manual SG 169 0.007 1.27 0
--.PO9.Z. 1985-02-19T17:02:00.00 10.0 undecidable manual PG 169 0.007 -0.89 0.2
--.CM8.Z. 1985-02-19T17:01:57.50 10.0 undecidable manual SG 115 0.0029 -0.29 0.7
--.AS1.Z. 1985-02-19T17:01:56.50 10.0 undecidable manual SG 193 0.0025 0.15 0.7
--.AR1.Z. 1985-02-19T17:01:54.00 10.0 undecidable manual SG 42 0.0019 -0.32 0.6
--.CM8.Z. 1985-02-19T17:01:52.00 10.0 positive manual PG 115 0.0029 -0.55 1.6
--.AR1.Z. 1985-02-19T17:01:51.00 10.0 positive manual PG 42 0.0019 0.45 1.8
--.AS1.Z. 1985-02-19T17:01:51.50 10.0 undecidable manual PG 193 0.0025 -0.22 2.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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