Earthquake with magnitude of Md 2.5 on date 30-09-1997 and time 08:07:00 (Italy) in region 4 km E Nocera Umbra (PG)

A magnitude Md 2.5 earthquake occured in region: 4 km E Nocera Umbra (PG), on

  • 30-09-1997 06:07:00 (UTC)
  • 30-09-1997 08:07:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1050, 12.8420 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
Nocera Umbra PG 4 5839 5839
Valtopina PG 9 1398 7237
Serravalle di Chienti MC 10 1070 8307
Sefro MC 10 422 8729
Fiuminata MC 12 1402 10131
Pioraco MC 14 1134 11265
Gualdo Tadino PG 15 15208 26473
Muccia MC 17 915 27388
Monte Cavallo MC 18 145 27533
Pieve Torina MC 18 1458 28991
Esanatoglia MC 19 2034 31025
Spello PG 19 8645 39670
Assisi PG 19 28299 67969
Camerino MC 19 6974 74943
Foligno PG 20 57155 132098

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NE of Foligno (57155 inhabitants)
37 Km E of Perugia (166134 inhabitants)
63 Km N of Terni (111501 inhabitants)
79 Km SW of Ancona (100861 inhabitants)
84 Km S of Fano (60888 inhabitants)
86 Km NW of Teramo (54892 inhabitants)
87 Km E of Arezzo (99543 inhabitants)
90 Km S of Pesaro (94582 inhabitants)
95 Km NW of L'Aquila (69753 inhabitants)
97 Km NE of Viterbo (67173 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 1.7
1997-09-30
06:07:00
43.105 12.842 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 285379
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-30 06:07:00 ± 0.218
Latitude 43.1050 ± 0.0097
Longitude 12.8420 ± 0.0178
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 285379

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) 1799.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 178
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00130
Epicentral distance of station farthest from the epicenter (degree) 0.01060
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:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 285379
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:29:03

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 285379
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
--.SFI.Z. 1997-09-30T06:07:37.31 10.0 undecidable manual SG 318 1.0656 -0.29 0.3
--.CRE.Z. 1997-09-30T06:07:30.90 10.0 undecidable manual SG 308 0.8214 0.47 0.2
--.MNS.Z. 1997-09-30T06:07:26.96 10.0 undecidable manual SG 189 0.7326 0.5 0.2
--.CSNT.Z. 1997-09-30T06:07:23.28 10.0 undecidable manual PN 288 1.1766 -0.04 1.2
--.SFI.Z. 1997-09-30T06:07:21.65 10.0 undecidable manual PG 318 1.0656 -0.14 1.2
--.CRE.Z. 1997-09-30T06:07:16.68 10.0 undecidable manual PG 308 0.8214 -0.5 0.4
--.ARV.Z. 1997-09-30T06:07:15.87 10.0 undecidable manual SG 10 0.3996 0.14 0.6
--.MNS.Z. 1997-09-30T06:07:14.84 10.0 undecidable manual PG 189 0.7326 -0.52 0.3
--.ARV.Z. 1997-09-30T06:07:09.22 10.0 positive manual PG 10 0.3996 0.06 3.3
--.ASS.Z. 1997-09-30T06:07:06.50 10.0 undecidable manual SG 252 0.1443 0.47 0.2
--.ASS.Z. 1997-09-30T06:07:03.50 10.0 positive manual PG 252 0.1443 -0.06 3.3
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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