Earthquake with magnitude of Md 2.0 on date 06-04-1998 and time 02:17:52 (Italy) in region 6 km NE Nocera Umbra (PG)

A magnitude Md 2.0 earthquake occured in region: 6 km NE Nocera Umbra (PG), on

  • 06-04-1998 00:17:52 (UTC)
  • 06-04-1998 02:17:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1660, 12.8200 at 7 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
Nocera Umbra PG 7 5839 5839
Gualdo Tadino PG 8 15208 21047
Fiuminata MC 10 1402 22449
Sefro MC 11 422 22871
Valtopina PG 13 1398 24269
Pioraco MC 14 1134 25403
Esanatoglia MC 14 2034 27437
Serravalle di Chienti MC 15 1070 28507
Fossato di Vico PG 15 2840 31347
Valfabbrica PG 18 3389 34736
Matelica MC 19 9981 44717
Sigillo PG 20 2404 47121
Assisi PG 20 28299 75420

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km NE of Foligno (57155 inhabitants)
36 Km E of Perugia (166134 inhabitants)
69 Km N of Terni (111501 inhabitants)
76 Km SW of Ancona (100861 inhabitants)
77 Km S of Fano (60888 inhabitants)
83 Km E of Arezzo (99543 inhabitants)
83 Km S of Pesaro (94582 inhabitants)
92 Km NW of Teramo (54892 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 1998-04-06
00:17:52
43.166 12.82 7 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 332029
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-04-06 00:17:52 ± 0.198
Latitude 43.1660 ± 0.0140
Longitude 12.8200 ± 0.0216
Depth (km) 7 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 332029

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) 2340.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 145
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00105
Epicentral distance of station farthest from the epicenter (degree) 0.00348
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 332029
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:11:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.NRCA.Z. 1998-04-06T00:18:08.61 10.0 undecidable manual SG 147 0.3885 0.54 0.2
--.ARV.Z. 1998-04-06T00:18:06.00 10.0 undecidable manual SG 15 0.3441 -0.29 0.4
--.ARV.Z. 1998-04-06T00:18:01.00 10.0 undecidable manual PG 15 0.3441 0.4 0.8
--.NRCA.Z. 1998-04-06T00:18:01.26 10.0 undecidable manual PG 147 0.3885 -0.37 0.8
--.ASS.Z. 1998-04-06T00:17:59.78 10.0 undecidable manual SG 229 0.1554 0.37 0.4
--.SNTG.Z. 1998-04-06T00:17:57.73 10.0 undecidable manual SG 44 0.1221 -0.42 0.3
--.SNTG.Z. 1998-04-06T00:17:56.10 10.0 positive manual PG 44 0.1221 0.11 3.7
--.ASS.Z. 1998-04-06T00:17:56.35 10.0 undecidable manual PG 229 0.1554 -0.28 1.4
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