Earthquake with magnitude of Md 2.5 on date 09-12-1997 and time 15:47:26 (Italy) in region 7 km N Sellano (PG)

A magnitude Md 2.5 earthquake occured in region: 7 km N Sellano (PG), on

  • 09-12-1997 14:47:26 (UTC)
  • 09-12-1997 15:47:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9500, 12.9220 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 7 1079 1079
Monte Cavallo MC 8 145 1224
Preci PG 12 724 1948
Visso MC 14 1107 3055
Serravalle di Chienti MC 14 1070 4125
Cerreto di Spoleto PG 14 1075 5200
Pieve Torina MC 15 1458 6658
Trevi PG 16 8469 15127
Fiordimonte MC 17 202 15329
Ussita MC 18 444 15773
Foligno PG 18 57155 72928
Muccia MC 18 915 73843
Pievebovigliana MC 18 866 74709
Valtopina PG 18 1398 76107
Campello sul Clitunno PG 19 2442 78549
Castelsantangelo sul Nera MC 20 281 78830

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km E of Foligno (57155 inhabitants)
47 Km E of Perugia (166134 inhabitants)
49 Km NE of Terni (111501 inhabitants)
72 Km W of Teramo (54892 inhabitants)
77 Km NW of L'Aquila (69753 inhabitants)
89 Km SW of Ancona (100861 inhabitants)
89 Km NE of Viterbo (67173 inhabitants)
100 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 2.5
ML-VAX 1.8
1997-12-09
14:47:26
42.95 12.922 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 316339
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-12-09 14:47:26 ± 0.233
Latitude 42.9500 ± 0.0143
Longitude 12.9220 ± 0.0213
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 316339

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) 2355.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 170
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
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) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.00874
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 316339
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:56:36

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 316339
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. 1997-12-09T14:47:53.97 10.0 undecidable manual SG 352 0.7437 0.09 0.4
--.CRE.Z. 1997-12-09T14:47:47.69 10.0 undecidable manual PG 313 0.9657 1.05 0.2
--.FB9.Z. 1997-12-09T14:47:43.51 10.0 undecidable manual PG 352 0.7437 1.02 0.3
--.SNTG.Z. 1997-12-09T14:47:38.92 10.0 undecidable manual SG 2 0.2997 0.09 0.6
--.ASS.Z. 1997-12-09T14:47:35.88 10.0 undecidable manual SG 300 0.222 0.02 0.6
--.NRCA.Z. 1997-12-09T14:47:34.95 10.0 undecidable manual SG 129 0.1776 0.78 0.3
--.SNTG.Z. 1997-12-09T14:47:33.29 10.0 positive manual PG 2 0.2997 -0.52 2
--.ASS.Z. 1997-12-09T14:47:31.60 10.0 positive manual PG 300 0.222 -0.49 2.1
--.NRCA.Z. 1997-12-09T14:47:30.85 10.0 positive manual PG 129 0.1776 -0.27 2.6
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