Earthquake with magnitude of Md 3.2 on date 28-09-1997 and time 19:47:16 (Italy) in region 3 km SW Nocera Umbra (PG)

A magnitude Md 3.2 earthquake occured in region: 3 km SW Nocera Umbra (PG), on

  • 28-09-1997 17:47:16 (UTC)
  • 28-09-1997 19:47:16 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1, 12.76 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 3 5839 5839
Valtopina PG 4 1398 7237
Assisi PG 12 28299 35536
Spello PG 14 8645 44181
Valfabbrica PG 15 3389 47570
Gualdo Tadino PG 15 15208 62778
Serravalle di Chienti MC 16 1070 63848
Foligno PG 16 57155 121003
Sefro MC 17 422 121425
Bastia Umbra PG 17 21874 143299
Fiuminata MC 17 1402 144701
Cannara PG 18 4305 149006

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km N of Foligno (57155 inhabitants)
30 Km E of Perugia (166134 inhabitants)
60 Km N of Terni (111501 inhabitants)
82 Km SE of Arezzo (99543 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
86 Km S of Fano (60888 inhabitants)
91 Km NW of Teramo (54892 inhabitants)
91 Km S of Pesaro (94582 inhabitants)
93 Km NE of Viterbo (67173 inhabitants)
98 Km NW of L'Aquila (69753 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 3.2
ML-VAX 2.0
1997-09-28
17:47:16
43.1 12.76 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 283539
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-28 17:47:16 ± 0.232
Latitude 43.10 ± 0.01
Longitude 12.76 ± 0.03
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 283539

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) 2544.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 128
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00073
Epicentral distance of station farthest from the epicenter (degree) 0.01651
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

Md:3.2

Field Value
Value 3.2
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 283539
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:27:26

ML:2

Field Value
Value 2
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 283539
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
--.PQ9.Z. 1997-09-28T17:47:58.37 10.0 undecidable manual SN 155 0.0105 1.81 0.1
--.BDI.Z. 1997-09-28T17:47:49.71 10.0 undecidable manual PN 302 0.0165 0.86 0.9
--.AQU.Z. 1997-09-28T17:47:49.37 10.0 undecidable manual SG 147 0.0079 1.44 0.2
--.RSM.Z. 1997-09-28T17:47:48.35 10.0 undecidable manual SG 345 0.0077 1.1 0.4
--.PII.Z. 1997-09-28T17:47:48.39 10.0 undecidable manual PN 291 0.0156 0.91 0.8
--.SDI.Z. 1997-09-28T17:47:46.40 10.0 undecidable manual PN 150 0.0142 0.95 0.9
--.CRE.Z. 1997-09-28T17:47:45.51 10.0 undecidable manual SG 311 0.007 0.65 0.6
--.RDP.Z. 1997-09-28T17:47:42.35 10.0 undecidable manual PN 181 0.012 0.34 1.5
--.MNS.Z. 1997-09-28T17:47:40.99 10.0 undecidable manual SG 184 0.0064 -1.63 0.2
--.PQ9.Z. 1997-09-28T17:47:40.81 10.0 undecidable manual PN 155 0.0105 1.06 0.9
--.RMP.Z. 1997-09-28T17:47:39.96 10.0 undecidable manual PN 181 0.0116 -1.33 0.6
--.SFI.Z. 1997-09-28T17:47:37.65 10.0 undecidable manual PG 320 0.0093 -0.1 1.9
--.FB9.Z. 1997-09-28T17:47:37.50 10.0 undecidable manual SG 1 0.0053 -1.22 0.3
--.CSNT.Z. 1997-09-28T17:47:37.86 10.0 undecidable manual PN 289 0.0101 -1.29 0.7
--.RSM.Z. 1997-09-28T17:47:34.94 10.0 undecidable manual PG 345 0.0077 0.57 1.7
--.ARV.Z. 1997-09-28T17:47:33.59 10.0 undecidable manual SG 18 0.0037 0.43 0.7
--.AQU.Z. 1997-09-28T17:47:33.40 10.0 undecidable manual PG 147 0.0079 -1.37 0.6
--.CRE.Z. 1997-09-28T17:47:32.76 10.0 undecidable manual PG 311 0.007 -0.23 2
--.MNS.Z. 1997-09-28T17:47:31.47 10.0 undecidable manual PG 184 0.0064 -0.23 2
--.FB9.Z. 1997-09-28T17:47:28.89 10.0 undecidable manual PG 1 0.0053 -0.56 1.7
--.ARV.Z. 1997-09-28T17:47:25.61 10.0 undecidable manual PG 18 0.0037 -0.63 1.6
--.ASS.Z. 1997-09-28T17:47:20.91 10.0 undecidable manual SG 245 0.0007 0.41 0.7
--.ASS.Z. 1997-09-28T17:47:18.77 10.0 undecidable manual PG 245 0.0007 -0.16 2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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