Earthquake with magnitude of Md 2.3 on date 02-03-1990 and time 08:24:57 (UTC) in region 12 km NW Valfabbrica (PG)

A magnitude Md 2.3 earthquake occured in region: 12 km NW Valfabbrica (PG), on

  • 02-03-1990 08:24:57 (UTC)
  • 02-03-1990 09:24:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.2480, 12.5250 at 38 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
Valfabbrica PG 12 3389 3389
Gubbio PG 13 32216 35605
Umbertide PG 17 16681 52286
Perugia PG 19 166134 218420
Costacciaro PG 20 1216 219636
Fossato di Vico PG 20 2840 222476
Sigillo PG 20 2404 224880

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km NE of Perugia (166134 inhabitants)
36 Km NW of Foligno (57155 inhabitants)
57 Km E of Arezzo (99543 inhabitants)
77 Km N of Terni (111501 inhabitants)
77 Km SW of Fano (60888 inhabitants)
80 Km SW of Pesaro (94582 inhabitants)
90 Km W of Ancona (100861 inhabitants)
91 Km S of Rimini (147750 inhabitants)
97 Km E of Siena (53903 inhabitants)
98 Km NE of Viterbo (67173 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 2.3
ML-VAX 1.8
1990-03-02
08:24:57
43.248 12.525 38 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 110979
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1990-03-02 08:24:57 ± 0.501
Latitude 43.2480 ± 0.0412
Longitude 12.5250 ± 0.0545
Depth (km) 38 ± 8 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 110979

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) 6361.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 164
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1
Epicentral distance of station closest to the epicenter (degree) 0.00186
Epicentral distance of station farthest from the epicenter (degree) 0.00801
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 110979
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:43:12

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 110979
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ALP.Z. 1990-03-02T08:25:26.83 10.0 undecidable manual S 121 0.888 1.72 0.3
--.SFI.Z. 1990-03-02T08:25:24.90 10.0 undecidable manual S 323 0.8214 0.74 0.4
--.PGD.Z. 1990-03-02T08:25:23.50 10.0 undecidable manual S 317 0.8547 -0.72 0.5
--.RM8.Z. 1990-03-02T08:25:15.53 10.0 undecidable manual S ! 120 0.5772 -2.17 0
--.ALP.Z. 1990-03-02T08:25:14.28 10.0 undecidable manual P 121 0.888 0.98 1.9
--.ARV.Z. 1990-03-02T08:25:13.48 10.0 undecidable manual S 50 0.3885 -0.04 0.6
--.PGD.Z. 1990-03-02T08:25:12.00 10.0 undecidable manual P 317 0.8547 -0.79 1.1
--.SFI.Z. 1990-03-02T08:25:12.76 10.0 undecidable manual P 323 0.8214 0.47 1.3
--.ASS.Z. 1990-03-02T08:25:09.35 10.0 undecidable manual S 153 0.2109 -0.51 0.6
--.RM8.Z. 1990-03-02T08:25:08.22 10.0 undecidable manual P 120 0.5772 -0.8 2.5
--.ARV.Z. 1990-03-02T08:25:07.90 10.0 undecidable manual P 50 0.3885 1.29 0.7
--.ASS.Z. 1990-03-02T08:25:05.28 10.0 undecidable manual P 153 0.2109 0.79 1.3
--.CIO.Z. 1990-03-02T08:25:05.41 10.0 undecidable manual P 96 0.444 -1.96 0.8
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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