Earthquake with magnitude of Md 4.5 on date 05-04-1998 and time 15:52:20 (UTC) in region 6 km S Gualdo Tadino (PG)

A magnitude Md 4.5 earthquake occured in region: 6 km S Gualdo Tadino (PG), on

  • 05-04-1998 15:52:20 (UTC)
  • 05-04-1998 17:52:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.18, 12.77 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 6 15208 15208
Nocera Umbra PG 7 5839 21047
Fiuminata MC 13 1402 22449
Valtopina PG 13 1398 23847
Fossato di Vico PG 13 2840 26687
Valfabbrica PG 14 3389 30076
Sefro MC 15 422 30498
Esanatoglia MC 16 2034 32532
Pioraco MC 17 1134 33666
Assisi PG 17 28299 61965
Sigillo PG 18 2404 64369
Serravalle di Chienti MC 19 1070 65439

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km N of Foligno (57155 inhabitants)
32 Km E of Perugia (166134 inhabitants)
69 Km N of Terni (111501 inhabitants)
77 Km S of Fano (60888 inhabitants)
78 Km SW of Ancona (100861 inhabitants)
79 Km E of Arezzo (99543 inhabitants)
82 Km S of Pesaro (94582 inhabitants)
95 Km NW of Teramo (54892 inhabitants)
100 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 4.5 1998-04-05
15:52:20
43.18 12.77 10 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 331769
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-04-05 15:52:20 ± 0.123
Latitude 43.18 ± 0.01
Longitude 12.77 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 331769

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) 1344.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00121
Epicentral distance of station farthest from the epicenter (degree) 0.01619
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitude information

Md:4.5

Field Value
Value 4.5
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 331769
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:10:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.BDI.Z. 1998-04-05T15:52:50.88 10.0 undecidable manual PN 300 0.0162 -0.3 0.6
--.PII.Z. 1998-04-05T15:52:49.88 10.0 undecidable manual PN 289 0.0155 -0.13 0.8
--.SDI.Z. 1998-04-05T15:52:49.63 10.0 undecidable manual PN 152 0.0148 0.54 0.4
--.RMP.Z. 1998-04-05T15:52:45.66 10.0 undecidable manual PN 182 0.0122 0.52 0.5
--.GRFL.Z. 1998-04-05T15:52:44.43 10.0 undecidable manual PN 269 0.0117 0.04 1
--.BS9.Z. 1998-04-05T15:52:44.26 10.0 undecidable manual PN 335 0.0109 1.2 0
--.PQ9.Z. 1998-04-05T15:52:43.90 10.0 undecidable manual PN 158 0.0112 -0.36 0.7
--.CSNT.Z. 1998-04-05T15:52:41.54 10.0 undecidable manual PN 285 0.01 -0.19 1
--.SFI.Z. 1998-04-05T15:52:39.17 10.0 undecidable manual PG 317 0.0088 -0.59 0.5
--.AQU.Z. 1998-04-05T15:52:38.20 10.0 undecidable manual PG 150 0.0084 -0.71 0.3
--.RSM.Z. 1998-04-05T15:52:36.36 10.0 undecidable manual PG 342 0.007 0.34 0.9
--.MNS.Z. 1998-04-05T15:52:35.73 10.0 positive manual PG 185 0.0071 -0.44 1.5
--.NRCA.Z. 1998-04-05T15:52:35.13 10.0 undecidable manual SG 144 0.0038 -0.71 0.1
--.CRE.Z. 1998-04-05T15:52:34.78 10.0 undecidable manual PG 306 0.0066 -0.44 0.8
--.FB9.Z. 1998-04-05T15:52:30.61 10.0 positive manual PG 0 0.0046 -0.36 1.8
--.NRCA.Z. 1998-04-05T15:52:29.40 10.0 positive manual PG 144 0.0038 0.11 2.4
--.ARV.Z. 1998-04-05T15:52:27.58 10.0 positive manual PG 21 0.0031 -0.23 2.2
--.ASS.Z. 1998-04-05T15:52:27.56 10.0 undecidable manual SG 217 0.0013 0.65 0.2
--.SNTG.Z. 1998-04-05T15:52:26.77 10.0 undecidable manual SG 57 0.0012 -0.08 0.5
--.ASS.Z. 1998-04-05T15:52:24.29 10.0 positive manual PG 217 0.0013 0.16 2.4
--.SNTG.Z. 1998-04-05T15:52:24.23 10.0 positive manual PG 57 0.0012 0.14 2.4
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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