Earthquake with magnitude of Md 3.5 on date 27-09-1997 and time 04:17:24 (Italy) in region 7 km E Nocera Umbra (PG)

A magnitude Md 3.5 earthquake occured in region: 7 km E Nocera Umbra (PG), on

  • 27-09-1997 02:17:24 (UTC)
  • 27-09-1997 04:17:24 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1, 12.87 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 7 5839 5839
Serravalle di Chienti MC 8 1070 6909
Sefro MC 8 422 7331
Valtopina PG 11 1398 8729
Fiuminata MC 11 1402 10131
Pioraco MC 13 1134 11265
Muccia MC 14 915 12180
Gualdo Tadino PG 16 15208 27388
Pieve Torina MC 16 1458 28846
Monte Cavallo MC 16 145 28991
Camerino MC 16 6974 35965
Esanatoglia MC 18 2034 37999
Pievebovigliana MC 18 866 38865
Castelraimondo MC 19 4587 43452
Fiordimonte MC 19 202 43654

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km NE of Foligno (57155 inhabitants)
39 Km E of Perugia (166134 inhabitants)
63 Km N of Terni (111501 inhabitants)
78 Km SW of Ancona (100861 inhabitants)
83 Km S of Fano (60888 inhabitants)
84 Km NW of Teramo (54892 inhabitants)
90 Km E of Arezzo (99543 inhabitants)
90 Km S of Pesaro (94582 inhabitants)
94 Km NW of L'Aquila (69753 inhabitants)
99 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 3.5
ML-VAX 3.4
1997-09-27
02:17:24
43.1 12.87 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 281039
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-27 02:17:24 ± 0.23
Latitude 43.10 ± 0.01
Longitude 12.87 ± 0.02
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 281039

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) 2375.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 152
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00146
Epicentral distance of station farthest from the epicenter (degree) 0.01708
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

Md:3.5

Field Value
Value 3.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 281039
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:25:16

ML:3.4

Field Value
Value 3.4
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 281039
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 Takeoff_angle Residual Weight
--.RDP.Z. 1997-09-27T02:18:08.64 10.0 undecidable manual SN 184 0.0121 0.16 0.7
--.RMP.Z. 1997-09-27T02:18:06.34 10.0 undecidable manual SN 185 0.0117 -0.91 0.3
--.PQ9.Z. 1997-09-27T02:18:04.30 10.0 undecidable manual SN 159 0.0103 0.31 0.8
--.SFI.Z. 1997-09-27T02:18:03.26 10.0 undecidable manual SN 317 0.0098 0.96 0.3
--.PII.Z. 1997-09-27T02:17:56.69 10.0 undecidable manual PN 290 0.0163 0.44 1.3
--.BDI.Z. 1997-09-27T02:17:56.75 10.0 undecidable manual PN 300 0.0171 -0.76 0.9
--.RDP.Z. 1997-09-27T02:17:49.50 10.0 undecidable manual PN 184 0.0121 -0.41 1.5
--.RMP.Z. 1997-09-27T02:17:48.50 10.0 undecidable manual PN 185 0.0117 -0.7 1.1
--.PQ9.Z. 1997-09-27T02:17:48.63 10.0 undecidable manual PN 159 0.0103 1.47 0.4
--.SFI.Z. 1997-09-27T02:17:47.60 10.0 undecidable manual PN 317 0.0098 0.72 1.3
--.MNS.Z. 1997-09-27T02:17:40.00 10.0 undecidable manual PG 190 0.0066 0.23 2.1
--.ARV.Z. 1997-09-27T02:17:39.00 10.0 undecidable manual SG 7 0.0036 -0.96 0.4
--.FB9.Z. 1997-09-27T02:17:38.00 10.0 undecidable manual PG 353 0.0053 0.85 1.1
--.ARV.Z. 1997-09-27T02:17:32.50 10.0 undecidable manual PG 7 0.0036 -0.94 1
--.ASS.Z. 1997-09-27T02:17:30.80 10.0 undecidable manual SG 255 0.0015 -0.32 0.8
--.ASS.Z. 1997-09-27T02:17:28.19 10.0 undecidable manual PG 255 0.0015 -0.15 2.1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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