Earthquake with magnitude of Md 2.0 on date 08-05-1990 and time 08:20:45 (UTC) in region 4 km SE Gualdo Tadino (PG)

A magnitude Md 2.0 earthquake occured in region: 4 km SE Gualdo Tadino (PG), on

  • 08-05-1990 08:20:45 (UTC)
  • 08-05-1990 10:20:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2, 12.81 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
Gualdo Tadino PG 4 15208 15208
Fiuminata MC 10 1402 16610
Nocera Umbra PG 10 5839 22449
Fossato di Vico PG 12 2840 25289
Esanatoglia MC 12 2034 27323
Sefro MC 13 422 27745
Pioraco MC 14 1134 28879
Sigillo PG 16 2404 31283
Valtopina PG 16 1398 32681
Fabriano AN 17 31480 64161
Matelica MC 17 9981 74142
Valfabbrica PG 18 3389 77531
Serravalle di Chienti MC 18 1070 78601
Cerreto d'Esi AN 20 3817 82418
Costacciaro PG 20 1216 83634
Castelraimondo MC 20 4587 88221

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NE of Foligno (57155 inhabitants)
36 Km E of Perugia (166134 inhabitants)
72 Km N of Terni (111501 inhabitants)
74 Km SW of Ancona (100861 inhabitants)
74 Km S of Fano (60888 inhabitants)
80 Km S of Pesaro (94582 inhabitants)
81 Km E of Arezzo (99543 inhabitants)
94 Km NW of Teramo (54892 inhabitants)
98 Km S of Rimini (147750 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 1990-05-08
08:20:45
43.2 12.81 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 117389
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1990-05-08 08:20:45 ± 0.127
Latitude 43.20 ± 0.01
Longitude 12.81 ± 0.01
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 117389

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) 1376.3
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 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.0034
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

Field Value
Value 2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 117389
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:49:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.RMF.Z. 1990-05-08T08:21:00.54 10.0 undecidable manual SG 130 0.0034 0.57 0.1
--.ARV.Z. 1990-05-08T08:20:58.30 10.0 undecidable manual SG 17 0.0028 0.37 0.2
--.CIO.Z. 1990-05-08T08:20:55.93 10.0 undecidable manual SG 90 0.0021 0.37 0.3
--.ASS.Z. 1990-05-08T08:20:53.50 10.0 undecidable manual SG 220 0.0016 -0.11 0.5
--.RMF.Z. 1990-05-08T08:20:53.76 10.0 undecidable manual PG 130 0.0034 -0.27 1.3
--.ARV.Z. 1990-05-08T08:20:52.80 10.0 undecidable manual PG 17 0.0028 -0.05 1.2
--.CIO.Z. 1990-05-08T08:20:51.30 10.0 undecidable manual PG 90 0.0021 -0.18 2.1
--.ASS.Z. 1990-05-08T08:20:50.50 10.0 negative manual PG 220 0.0016 0.14 2.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download