Earthquake with magnitude of Md 2.0 on date 08-04-1998 and time 05:53:38 (Italy) in region 7 km S Gualdo Tadino (PG)

A magnitude Md 2.0 earthquake occured in region: 7 km S Gualdo Tadino (PG), on

  • 08-04-1998 03:53:38 (UTC)
  • 08-04-1998 05:53:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1750, 12.7660 at 8 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 7 15208 15208
Nocera Umbra PG 7 5839 21047
Valtopina PG 13 1398 22445
Valfabbrica PG 13 3389 25834
Fossato di Vico PG 13 2840 28674
Fiuminata MC 14 1402 30076
Sefro MC 15 422 30498
Assisi PG 17 28299 58797
Esanatoglia MC 17 2034 60831
Sigillo PG 18 2404 63235
Pioraco MC 18 1134 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)
83 Km S of Pesaro (94582 inhabitants)
96 Km NW of Teramo (54892 inhabitants)
100 Km NE of Viterbo (67173 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 2.0 1998-04-08
03:53:38
43.175 12.766 7 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 332769
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-04-08 03:53:38 ± 0.006
Latitude 43.1750 ± 0.0004
Longitude 12.7660 ± 0.0006
Depth (km) 7 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 332769

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) 68.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 165
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0
Epicentral distance of station closest to the epicenter (degree) 0.00121
Epicentral distance of station farthest from the epicenter (degree) 0.00380
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 3
Type of magnitude Md
Reference to an origin 332769
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:11:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.NRCA.Z. 1998-04-08T03:53:54.21 10.0 undecidable manual SG 143 0.4218 0.01 0.3
--.NRCA.Z. 1998-04-08T03:53:47.41 10.0 undecidable manual PG 143 0.4218 -0.01 0.8
--.ARV.Z. 1998-04-08T03:53:46.00 10.0 undecidable manual PG 21 0.3441 0.01 0.9
--.ASS.Z. 1998-04-08T03:53:44.14 10.0 undecidable manual SG 216 0.1332 0.02 0.4
--.SNTG.Z. 1998-04-08T03:53:44.50 10.0 undecidable manual SG 57 0.1443 0.02 0.4
--.ASS.Z. 1998-04-08T03:53:41.59 10.0 positive manual PG 216 0.1332 0 2.1
--.SNTG.Z. 1998-04-08T03:53:41.80 10.0 positive manual PG 57 0.1443 0 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