Earthquake with magnitude of Md 2.4 on date 01-10-1997 and time 06:56:41 (Italy) in region 4 km SE Nocera Umbra (PG)

A magnitude Md 2.4 earthquake occured in region: 4 km SE Nocera Umbra (PG), on

  • 01-10-1997 04:56:41 (UTC)
  • 01-10-1997 06:56:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0820, 12.8190 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 4 5839 5839
Valtopina PG 6 1398 7237
Serravalle di Chienti MC 11 1070 8307
Sefro MC 13 422 8729
Fiuminata MC 15 1402 10131
Spello PG 16 8645 18776
Assisi PG 17 28299 47075
Foligno PG 17 57155 104230
Gualdo Tadino PG 17 15208 119438
Pioraco MC 17 1134 120572
Monte Cavallo MC 18 145 120717
Muccia MC 18 915 121632
Pieve Torina MC 19 1458 123090
Valfabbrica PG 20 3389 126479

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km NE of Foligno (57155 inhabitants)
35 Km E of Perugia (166134 inhabitants)
60 Km N of Terni (111501 inhabitants)
82 Km SW of Ancona (100861 inhabitants)
86 Km NW of Teramo (54892 inhabitants)
86 Km S of Fano (60888 inhabitants)
87 Km E of Arezzo (99543 inhabitants)
93 Km S of Pesaro (94582 inhabitants)
94 Km NW of L'Aquila (69753 inhabitants)
94 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 2.4
ML-VAX 1.9
1997-10-01
04:56:41
43.082 12.819 5 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 286239
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-01 04:56:41 ± 0.168
Latitude 43.0820 ± 0.0079
Longitude 12.8190 ± 0.0179
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 286239

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) 1697.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 176
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00105
Epicentral distance of station farthest from the epicenter (degree) 0.00745
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:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 286239
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:29:48

ML:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 286239
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
--.FB9.Z. 1997-10-01T04:57:03.21 10.0 undecidable manual SG 357 0.5994 -0.35 0.1
--.CRE.Z. 1997-10-01T04:56:58.56 10.0 undecidable manual PG 310 0.8214 0.46 0.2
--.ARV.Z. 1997-10-01T04:56:57.61 10.0 undecidable manual SG 12 0.4218 0 0.6
--.MNS.Z. 1997-10-01T04:56:55.79 10.0 undecidable manual PG 188 0.6993 -0.01 1.2
--.FB9.Z. 1997-10-01T04:56:53.99 10.0 undecidable manual PG 357 0.5994 -0.07 1.2
--.ARV.Z. 1997-10-01T04:56:50.64 10.0 undecidable manual PG 12 0.4218 0.02 1.5
--.ASS.Z. 1997-10-01T04:56:45.74 10.0 undecidable manual SG 260 0.1221 -0.39 0.1
--.ASS.Z. 1997-10-01T04:56:44.10 10.0 positive manual PG 260 0.1221 0.01 3.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download