Earthquake with magnitude of Md 2.3 on date 22-03-1998 and time 12:01:50 (UTC) in region 8 km N Sellano (PG)

A magnitude Md 2.3 earthquake occured in region: 8 km N Sellano (PG), on

  • 22-03-1998 12:01:50 (UTC)
  • 22-03-1998 13:01:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9610, 12.9030 at 5 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
Sellano PG 8 1079 1079
Monte Cavallo MC 9 145 1224
Serravalle di Chienti MC 13 1070 2294
Preci PG 14 724 3018
Pieve Torina MC 15 1458 4476
Visso MC 16 1107 5583
Trevi PG 16 8469 14052
Cerreto di Spoleto PG 16 1075 15127
Foligno PG 16 57155 72282
Valtopina PG 16 1398 73680
Fiordimonte MC 18 202 73882
Muccia MC 18 915 74797
Campello sul Clitunno PG 19 2442 77239
Pievebovigliana MC 19 866 78105
Nocera Umbra PG 19 5839 83944
Spello PG 19 8645 92589
Ussita MC 19 444 93033

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km E of Foligno (57155 inhabitants)
45 Km E of Perugia (166134 inhabitants)
49 Km NE of Terni (111501 inhabitants)
74 Km W of Teramo (54892 inhabitants)
79 Km NW of L'Aquila (69753 inhabitants)
89 Km SW of Ancona (100861 inhabitants)
89 Km NE of Viterbo (67173 inhabitants)
99 Km S of Fano (60888 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 2.3
ML-VAX 1.8
1998-03-22
12:01:50
42.961 12.903 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 326689
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1998-03-22 12:01:50 ± 0.182
Latitude 42.9610 ± 0.0112
Longitude 12.9030 ± 0.0181
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 326689

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) 1924.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 126
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) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00178
Epicentral distance of station farthest from the epicenter (degree) 0.00907
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 326689
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 22:06:15

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 326689
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
--.FB9.Z. 1998-03-22T12:02:16.30 10.0 undecidable manual SG 353 0.7326 -0.41 0.6
--.MNS.Z. 1998-03-22T12:02:11.44 10.0 undecidable manual SG 196 0.5883 -0.85 0.3
--.PQ9.Z. 1998-03-22T12:02:11.50 10.0 undecidable manual PG 158 1.0101 0.96 0.4
--.ARV.Z. 1998-03-22T12:02:09.83 10.0 undecidable manual SG 3 0.5328 -0.52 0.6
--.FB9.Z. 1998-03-22T12:02:05.85 10.0 undecidable manual PG 353 0.7326 0.34 1.5
--.MNS.Z. 1998-03-22T12:02:02.80 10.0 undecidable manual PG 196 0.5883 -0.88 0.7
--.ARV.Z. 1998-03-22T12:02:01.26 10.0 undecidable manual PG 3 0.5328 -0.57 1.4
--.NRCA.Z. 1998-03-22T12:01:58.00 10.0 undecidable manual SG 129 0.1998 -0.1 1.3
--.ASS.Z. 1998-03-22T12:01:58.84 10.0 undecidable manual SG 299 0.2109 0.4 0.7
--.NRCA.Z. 1998-03-22T12:01:55.00 10.0 undecidable manual PG 129 0.1998 0.24 2
--.ASS.Z. 1998-03-22T12:01:55.48 10.0 undecidable manual PG 299 0.2109 0.52 1.5
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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