Earthquake with magnitude of Md 2.5 on date 01-10-1997 and time 13:49:04 (Italy) in region 8 km E Valtopina (PG)

A magnitude Md 2.5 earthquake occured in region: 8 km E Valtopina (PG), on

  • 01-10-1997 11:49:04 (UTC)
  • 01-10-1997 13:49:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0560, 12.8530 at 9 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
Valtopina PG 8 1398 1398
Nocera Umbra PG 8 5839 7237
Serravalle di Chienti MC 8 1070 8307
Sefro MC 13 422 8729
Monte Cavallo MC 14 145 8874
Muccia MC 16 915 9789
Pieve Torina MC 16 1458 11247
Fiuminata MC 16 1402 12649
Spello PG 16 8645 21294
Foligno PG 16 57155 78449
Pioraco MC 18 1134 79583
Pievebovigliana MC 19 866 80449
Assisi PG 19 28299 108748
Fiordimonte MC 19 202 108950
Sellano PG 20 1079 110029
Camerino MC 20 6974 117003

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km NE of Foligno (57155 inhabitants)
38 Km E of Perugia (166134 inhabitants)
58 Km NE of Terni (111501 inhabitants)
82 Km NW of Teramo (54892 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
89 Km S of Fano (60888 inhabitants)
90 Km NW of L'Aquila (69753 inhabitants)
91 Km SE of Arezzo (99543 inhabitants)
94 Km NE of Viterbo (67173 inhabitants)
95 Km S of Pesaro (94582 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 1.9
1997-10-01
11:49:04
43.056 12.853 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 286529
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-01 11:49:04 ± 0.142
Latitude 43.0560 ± 0.0037
Longitude 12.8530 ± 0.0149
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 286529

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) 1280.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 182
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) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00130
Epicentral distance of station farthest from the epicenter (degree) 0.00777
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 286529
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:30:03

ML:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 286529
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
--.MNS.Z. 1997-10-01T11:49:28.69 10.0 undecidable manual SG 190 0.6771 0.17 0.1
--.FB9.Z. 1997-10-01T11:49:27.28 10.0 undecidable manual SG 354 0.6327 0.19 0.1
--.ARV.Z. 1997-10-01T11:49:21.20 10.0 undecidable manual SG 8 0.444 0.23 0
--.CRE.Z. 1997-10-01T11:49:21.58 10.0 undecidable manual PG 310 0.8658 -0.14 0.4
--.MNS.Z. 1997-10-01T11:49:18.30 10.0 undecidable manual PG 190 0.6771 -0.05 1.2
--.FB9.Z. 1997-10-01T11:49:17.43 10.0 undecidable manual PG 354 0.6327 -0.1 0.8
--.ARV.Z. 1997-10-01T11:49:13.98 10.0 positive manual PG 8 0.444 -0.02 3
--.ASS.Z. 1997-10-01T11:49:10.96 10.0 undecidable manual SG 272 0.1443 0.07 0.5
--.ASS.Z. 1997-10-01T11:49:08.20 10.0 positive manual PG 272 0.1443 0.03 2.9
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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