Earthquake with magnitude of Md 2.3 on date 29-09-1997 and time 03:54:15 (Italy) in region 6 km SE Nocera Umbra (PG)

A magnitude Md 2.3 earthquake occured in region: 6 km SE Nocera Umbra (PG), on

  • 29-09-1997 01:54:15 (UTC)
  • 29-09-1997 03:54:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0790, 12.8510 at 8 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 6 5839 5839
Valtopina PG 8 1398 7237
Serravalle di Chienti MC 8 1070 8307
Sefro MC 11 422 8729
Fiuminata MC 14 1402 10131
Monte Cavallo MC 16 145 10276
Pioraco MC 16 1134 11410
Muccia MC 16 915 12325
Pieve Torina MC 17 1458 13783
Spello PG 17 8645 22428
Gualdo Tadino PG 18 15208 37636
Foligno PG 18 57155 94791
Camerino MC 19 6974 101765
Pievebovigliana MC 19 866 102631
Assisi PG 19 28299 130930

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NE of Foligno (57155 inhabitants)
38 Km E of Perugia (166134 inhabitants)
60 Km N of Terni (111501 inhabitants)
81 Km SW of Ancona (100861 inhabitants)
84 Km NW of Teramo (54892 inhabitants)
86 Km S of Fano (60888 inhabitants)
90 Km E of Arezzo (99543 inhabitants)
92 Km NW of L'Aquila (69753 inhabitants)
93 Km S of Pesaro (94582 inhabitants)
95 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 2.3
ML-VAX 1.6
1997-09-29
01:54:15
43.079 12.851 8 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 284089
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-29 01:54:15 ± 0.548
Latitude 43.0790 ± 0.0118
Longitude 12.8510 ± 0.0424
Depth (km) 8 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 284089

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) 3687.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 181
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00130
Epicentral distance of station farthest from the epicenter (degree) 0.00761
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:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 284089
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:27:55

ML:1.6

Field Value
Value 1.6
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 284089
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
--.CRE.Z. 1997-09-29T01:54:45.59 10.0 undecidable manual SG 309 0.8436 0.51 0.4
--.MNS.Z. 1997-09-29T01:54:40.20 10.0 undecidable manual SG 190 0.6993 -0.44 0.8
--.FB9.Z. 1997-09-29T01:54:37.29 10.0 undecidable manual SG 354 0.6105 -0.3 0.8
--.CRE.Z. 1997-09-29T01:54:32.46 10.0 undecidable manual PG 309 0.8436 -0.13 1.7
--.ARV.Z. 1997-09-29T01:54:31.55 10.0 undecidable manual SG 8 0.4218 0.07 0.8
--.MNS.Z. 1997-09-29T01:54:30.22 10.0 undecidable manual PG 190 0.6993 0.3 1.6
--.FB9.Z. 1997-09-29T01:54:29.23 10.0 undecidable manual PG 354 0.6105 0.97 0.8
--.ARV.Z. 1997-09-29T01:54:23.30 10.0 undecidable manual PG 8 0.4218 -1.71 0.4
--.ASS.Z. 1997-09-29T01:54:21.44 10.0 undecidable manual SG 263 0.1443 -0.36 0.5
--.ASS.Z. 1997-09-29T01:54:19.21 10.0 undecidable manual PG 263 0.1443 0.06 2.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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