Earthquake with magnitude of Md 3.6 on date 29-09-1997 and time 01:57:54 (Italy) in region 3 km NW Nocera Umbra (PG)

A magnitude Md 3.6 earthquake occured in region: 3 km NW Nocera Umbra (PG), on

  • 28-09-1997 23:57:54 (UTC)
  • 29-09-1997 01:57:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.14, 12.77 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 9 1398 7237
Gualdo Tadino PG 11 15208 22445
Valfabbrica PG 14 3389 25834
Fiuminata MC 14 1402 27236
Assisi PG 14 28299 55535
Sefro MC 15 422 55957
Serravalle di Chienti MC 17 1070 57027
Fossato di Vico PG 18 2840 59867
Spello PG 18 8645 68512
Pioraco MC 18 1134 69646
Esanatoglia MC 19 2034 71680
Bastia Umbra PG 19 21874 93554

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km N of Foligno (57155 inhabitants)
31 Km E of Perugia (166134 inhabitants)
65 Km N of Terni (111501 inhabitants)
81 Km E of Arezzo (99543 inhabitants)
81 Km SW of Ancona (100861 inhabitants)
81 Km S of Fano (60888 inhabitants)
87 Km S of Pesaro (94582 inhabitants)
93 Km NW of Teramo (54892 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 3.6
ML-VAX 2.9
1997-09-28
23:57:54
43.14 12.77 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 283939
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-28 23:57:54 ± 0.229
Latitude 43.14 ± 0.01
Longitude 12.77 ± 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 283939

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) 2802.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
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) 0.00097
Epicentral distance of station farthest from the epicenter (degree) 0.03805
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

Md:3.6

Field Value
Value 3.6
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 283939
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:27:47

ML:2.9

Field Value
Value 2.9
Uncertainty
Num. used stations 5
Type of magnitude ML
Reference to an origin 283939
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
--.ORO.Z. 1997-09-28T23:58:59.82 10.0 undecidable manual PN 307 0.038 0.64 0.8
--.DOI.Z. 1997-09-28T23:58:58.39 10.0 undecidable manual PN 290 0.0379 -0.52 0.8
--.VAI.Z. 1997-09-28T23:58:55.24 10.0 undecidable manual PN 315 0.0355 -0.03 1
--.CKI.Z. 1997-09-28T23:58:50.92 10.0 undecidable manual PN 293 0.0313 1.97 0.1
--.CA9.Z. 1997-09-28T23:58:43.92 10.0 undecidable manual PN 137 0.0269 1.79 0.2
--.CTI.Z. 1997-09-28T23:58:43.00 10.0 undecidable manual PN 344 0.0271 0.48 1.1
--.VVI.Z. 1997-09-28T23:58:40.56 10.0 undecidable manual PN 355 0.0257 0.27 1.2
--.MRB1.Z. 1997-09-28T23:58:37.62 10.0 undecidable manual PN 140 0.0232 0.95 0.7
--.MNS.Z. 1997-09-28T23:58:20.88 10.0 undecidable manual SG 184 0.0067 -0.48 0.5
--.RMP.Z. 1997-09-28T23:58:18.50 10.0 undecidable manual PN 182 0.0119 -0.81 1
--.SFI.Z. 1997-09-28T23:58:14.50 10.0 undecidable manual PG 319 0.0091 -0.28 1.5
--.AQU.Z. 1997-09-28T23:58:12.00 10.0 undecidable manual PG 149 0.0082 -0.79 1.1
--.MNS.Z. 1997-09-28T23:58:09.62 10.0 undecidable manual PG 184 0.0067 -0.3 1.5
--.ARV.Z. 1997-09-28T23:58:09.10 10.0 undecidable manual SG 19 0.0034 -0.03 0.6
--.ARV.Z. 1997-09-28T23:58:01.81 10.0 positive manual PG 19 0.0034 -1.04 1.6
--.ASS.Z. 1997-09-28T23:57:58.42 10.0 undecidable manual SG 229 0.001 -0.57 0.5
--.ASS.Z. 1997-09-28T23:57:56.56 10.0 positive manual PG 229 0.001 -0.44 2.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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