Earthquake with magnitude of Md 2.0 on date 22-04-1998 and time 09:37:11 (Italy) in region 5 km W Gualdo Tadino (PG)

A magnitude Md 2.0 earthquake occured in region: 5 km W Gualdo Tadino (PG), on

  • 22-04-1998 07:37:11 (UTC)
  • 22-04-1998 09:37:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2290, 12.7190 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 5 15208 15208
Fossato di Vico PG 8 2840 18048
Sigillo PG 12 2404 20452
Valfabbrica PG 12 3389 23841
Nocera Umbra PG 14 5839 29680
Costacciaro PG 15 1216 30896
Gubbio PG 18 32216 63112
Fiuminata MC 18 1402 64514
Esanatoglia MC 19 2034 66548
Valtopina PG 19 1398 67946
Fabriano AN 19 31480 99426
Assisi PG 19 28299 127725
Scheggia e Pascelupo PG 20 1393 129118

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Perugia (166134 inhabitants)
30 Km N of Foligno (57155 inhabitants)
73 Km SW of Fano (60888 inhabitants)
73 Km E of Arezzo (99543 inhabitants)
74 Km N of Terni (111501 inhabitants)
78 Km S of Pesaro (94582 inhabitants)
78 Km SW of Ancona (100861 inhabitants)
93 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
Bulletin
Rev1000
Md 2.0
ML-VAX 1.5
1998-04-22
07:37:11
43.229 12.719 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 335939
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-04-22 07:37:11 ± 0.048
Latitude 43.2290 ± 0.0027
Longitude 12.7190 ± 0.0056
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 335939

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) 544.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 168
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) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00146
Epicentral distance of station farthest from the epicenter (degree) 0.00437
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 335939
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:14:40

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 335939
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
--.NRCA.Z. 1998-04-22T07:37:29.70 10.0 undecidable manual SG 143 0.4884 0.14 0.2
--.FB9.Z. 1998-04-22T07:37:29.11 10.0 undecidable manual SG 5 0.4551 0.3 0
--.ARV.Z. 1998-04-22T07:37:24.11 10.0 undecidable manual SG 31 0.3108 0.11 0.4
--.NRCA.Z. 1998-04-22T07:37:22.20 10.0 undecidable manual PG 143 0.4884 -0.1 0.7
--.FB9.Z. 1998-04-22T07:37:21.62 10.0 undecidable manual PG 5 0.4551 -0.06 1
--.SNTG.Z. 1998-04-22T07:37:19.15 10.0 undecidable manual SG 80 0.1665 0.04 0.6
--.ASS.Z. 1998-04-22T07:37:19.42 10.0 undecidable manual SG 196 0.1665 -0.01 0.6
--.ARV.Z. 1998-04-22T07:37:18.81 10.0 positive manual PG 31 0.3108 -0.1 1.9
--.SNTG.Z. 1998-04-22T07:37:16.10 10.0 undecidable manual PG 80 0.1665 0.01 1.5
--.ASS.Z. 1998-04-22T07:37:16.28 10.0 positive manual PG 196 0.1665 0.01 3.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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