Earthquake with magnitude of Md 2.0 on date 09-01-1990 and time 04:02:37 (UTC) in region 8 km W Nocera Umbra (PG)

A magnitude Md 2.0 earthquake occured in region: 8 km W Nocera Umbra (PG), on

  • 09-01-1990 04:02:37 (UTC)
  • 09-01-1990 05:02:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1450, 12.7090 at 6 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
Nocera Umbra PG 8 5839 5839
Valfabbrica PG 9 3389 9228
Valtopina PG 10 1398 10626
Assisi PG 11 28299 38925
Gualdo Tadino PG 12 15208 54133
Bastia Umbra PG 16 21874 76007
Spello PG 17 8645 84652
Fossato di Vico PG 17 2840 87492
Fiuminata MC 19 1402 88894
Cannara PG 19 4305 93199
Sefro MC 20 422 93621

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km N of Foligno (57155 inhabitants)
26 Km E of Perugia (166134 inhabitants)
65 Km N of Terni (111501 inhabitants)
76 Km E of Arezzo (99543 inhabitants)
82 Km SW of Fano (60888 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
87 Km S of Pesaro (94582 inhabitants)
95 Km NE of Viterbo (67173 inhabitants)
97 Km NW of Teramo (54892 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
Bulletin
Rev1000
Md 2.0 1990-01-09
04:02:37
43.145 12.709 6 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 107539
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1990-01-09 04:02:37 ± 0.17
Latitude 43.1450 ± 0.0054
Longitude 12.7090 ± 0.0109
Depth (km) 6 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 107539

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) 1067.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 178
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) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00081
Epicentral distance of station farthest from the epicenter (degree) 0.00364
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:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 107539
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:40:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.RM8.Z. 1990-01-09T04:02:53.39 10.0 undecidable manual SG 117 0.3996 0.37 0.1
--.ARV.Z. 1990-01-09T04:02:52.40 10.0 undecidable manual SG 25 0.3885 0.08 0.8
--.CIO.Z. 1990-01-09T04:02:49.76 10.0 undecidable manual SG 80 0.3108 0.19 0.6
--.ARV.Z. 1990-01-09T04:02:45.90 10.0 undecidable manual PG 25 0.3885 0.03 2.1
--.RM8.Z. 1990-01-09T04:02:45.87 10.0 undecidable manual PG? 117 0.3996 -0.4 0.1
--.CIO.Z. 1990-01-09T04:02:44.70 10.0 undecidable manual PG 80 0.3108 -0.21 1.4
--.ASS.Z. 1990-01-09T04:02:41.00 10.0 undecidable manual SG 206 0.0888 -0.11 0.8
--.ASS.Z. 1990-01-09T04:02:39.50 10.0 undecidable manual PG 206 0.0888 0.11 2.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download