Earthquake with magnitude of Md 3.0 on date 28-09-1997 and time 21:44:51 (Italy) in region 1 km SW Nocera Umbra (PG)

A magnitude Md 3.0 earthquake occured in region: 1 km SW Nocera Umbra (PG), on

  • 28-09-1997 19:44:51 (UTC)
  • 28-09-1997 21:44:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.11, 12.79 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 1 5839 5839
Valtopina PG 6 1398 7237
Gualdo Tadino PG 14 15208 22445
Sefro MC 14 422 22867
Serravalle di Chienti MC 14 1070 23937
Assisi PG 14 28299 52236
Fiuminata MC 15 1402 53638
Spello PG 16 8645 62283
Valfabbrica PG 16 3389 65672
Pioraco MC 18 1134 66806
Foligno PG 18 57155 123961
Bastia Umbra PG 20 21874 145835

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NE of Foligno (57155 inhabitants)
32 Km E of Perugia (166134 inhabitants)
62 Km N of Terni (111501 inhabitants)
82 Km SW of Ancona (100861 inhabitants)
83 Km E of Arezzo (99543 inhabitants)
84 Km S of Fano (60888 inhabitants)
90 Km S of Pesaro (94582 inhabitants)
90 Km NW of Teramo (54892 inhabitants)
95 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 3.0
ML-VAX 1.8
1997-09-28
19:44:51
43.11 12.79 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 283689
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-28 19:44:51 ± 0.195
Latitude 43.11 ± 0.01
Longitude 12.79 ± 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 283689

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) 2063.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 132
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00097
Epicentral distance of station farthest from the epicenter (degree) 0.01425
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

Md:3

Field Value
Value 3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 283689
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:27:34

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 283689
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
--.CRE.Z. 1997-09-28T19:45:21.73 10.0 undecidable manual SG 310 0.0071 1.55 0
--.SDI.Z. 1997-09-28T19:45:20.50 10.0 undecidable manual PN 151 0.0142 0.04 1
--.MNS.Z. 1997-09-28T19:45:17.74 10.0 undecidable manual SG 186 0.0065 -0.27 0.6
--.PQ9.Z. 1997-09-28T19:45:16.55 10.0 undecidable manual PN 157 0.0105 1.76 0
--.RMP.Z. 1997-09-28T19:45:16.59 10.0 undecidable manual PN 182 0.0117 0.13 1.2
--.CSNT.Z. 1997-09-28T19:45:14.26 10.0 undecidable manual PN 288 0.0103 -0.14 1.3
--.FB9.Z. 1997-09-28T19:45:13.60 10.0 undecidable manual SG 359 0.0052 0.17 0.6
--.SFI.Z. 1997-09-28T19:45:12.50 10.0 undecidable manual PG 319 0.0094 -0.38 1.1
--.RSM.Z. 1997-09-28T19:45:09.00 10.0 undecidable manual PG 343 0.0077 -0.33 1.3
--.AQU.Z. 1997-09-28T19:45:09.30 10.0 undecidable manual PG 148 0.0079 -0.45 1.2
--.ARV.Z. 1997-09-28T19:45:08.17 10.0 undecidable manual SG 16 0.0036 0.58 0.4
--.CRE.Z. 1997-09-28T19:45:07.86 10.0 undecidable manual PG 310 0.0071 -0.33 1.4
--.MNS.Z. 1997-09-28T19:45:05.92 10.0 undecidable manual PG 186 0.0065 -1.02 0.5
--.FB9.Z. 1997-09-28T19:45:04.00 10.0 undecidable manual PG 359 0.0052 -0.3 1.4
--.ARV.Z. 1997-09-28T19:45:00.64 10.0 undecidable manual PG 16 0.0036 -0.28 1.4
--.ASS.Z. 1997-09-28T19:44:55.99 10.0 undecidable manual SG 245 0.001 -0.33 0.6
--.ASS.Z. 1997-09-28T19:44:54.63 10.0 positive manual PG 245 0.001 0.22 3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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