Earthquake with magnitude of Md 2.2 on date 09-04-1998 and time 02:37:49 (UTC) in region 6 km NE Nocera Umbra (PG)

A magnitude Md 2.2 earthquake occured in region: 6 km NE Nocera Umbra (PG), on

  • 09-04-1998 02:37:49 (UTC)
  • 09-04-1998 04:37:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1600, 12.8280 at 16 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 6 5839 5839
Gualdo Tadino PG 9 15208 21047
Fiuminata MC 9 1402 22449
Sefro MC 10 422 22871
Valtopina PG 13 1398 24269
Pioraco MC 13 1134 25403
Serravalle di Chienti MC 14 1070 26473
Esanatoglia MC 14 2034 28507
Fossato di Vico PG 16 2840 31347
Matelica MC 18 9981 41328
Valfabbrica PG 18 3389 44717
Castelraimondo MC 20 4587 49304
Muccia MC 20 915 50219
Camerino MC 20 6974 57193
Assisi PG 20 28299 85492

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km NE of Foligno (57155 inhabitants)
36 Km E of Perugia (166134 inhabitants)
68 Km N of Terni (111501 inhabitants)
76 Km SW of Ancona (100861 inhabitants)
78 Km S of Fano (60888 inhabitants)
84 Km E of Arezzo (99543 inhabitants)
84 Km S of Pesaro (94582 inhabitants)
91 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 2.2 1998-04-09
02:37:49
43.16 12.828 16 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 333049
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-04-09 02:37:49 ± 0.251
Latitude 43.1600 ± 0.0091
Longitude 12.8280 ± 0.0201
Depth (km) 16 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 333049

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) 1917.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
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) 0.00704
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 333049
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:12:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.FB9.Z. 1998-04-09T02:38:08.76 10.0 undecidable manual SG 356 0.5328 -0.25 0.3
--.MNS.Z. 1998-04-09T02:38:05.67 10.0 undecidable manual PG 188 0.777 0.15 1.1
--.NRCA.Z. 1998-04-09T02:38:04.86 10.0 undecidable manual SG 147 0.3885 0.46 0.2
--.ARV.Z. 1998-04-09T02:38:02.94 10.0 undecidable manual SG 14 0.3441 -0.26 0.4
--.FB9.Z. 1998-04-09T02:38:01.82 10.0 undecidable manual PG 356 0.5328 0.9 0.3
--.ARV.Z. 1998-04-09T02:37:57.44 10.0 undecidable manual PG 14 0.3441 -0.12 1.4
--.NRCA.Z. 1998-04-09T02:37:57.82 10.0 undecidable manual PG 147 0.3885 -0.44 0.8
--.ASS.Z. 1998-04-09T02:37:57.80 10.0 undecidable manual SG 232 0.1554 -0.59 0.4
--.SNTG.Z. 1998-04-09T02:37:56.97 10.0 undecidable manual SG 40 0.1221 0.2 0.5
--.ASS.Z. 1998-04-09T02:37:54.51 10.0 undecidable manual PG 232 0.1554 0.14 1.7
--.SNTG.Z. 1998-04-09T02:37:53.86 10.0 positive manual PG 40 0.1221 0.01 3.8
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download