Earthquake with magnitude of Md 2.0 on date 11-11-1997 and time 15:56:23 (Italy) in region 2 km S Nocera Umbra (PG)

A magnitude Md 2.0 earthquake occured in region: 2 km S Nocera Umbra (PG), on

  • 11-11-1997 14:56:23 (UTC)
  • 11-11-1997 15:56:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0950, 12.7950 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 2 5839 5839
Valtopina PG 5 1398 7237
Serravalle di Chienti MC 13 1070 8307
Sefro MC 14 422 8729
Assisi PG 15 28299 37028
Spello PG 15 8645 45673
Gualdo Tadino PG 15 15208 60881
Fiuminata MC 15 1402 62283
Foligno PG 17 57155 119438
Valfabbrica PG 17 3389 122827
Pioraco MC 18 1134 123961

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km NE of Foligno (57155 inhabitants)
33 Km E of Perugia (166134 inhabitants)
61 Km N of Terni (111501 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
85 Km E of Arezzo (99543 inhabitants)
85 Km S of Fano (60888 inhabitants)
89 Km NW of Teramo (54892 inhabitants)
91 Km S of Pesaro (94582 inhabitants)
94 Km NE of Viterbo (67173 inhabitants)
96 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 2.0 1997-11-11
14:56:23
43.095 12.795 8 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 311849
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-11-11 14:56:23 ± 0.121
Latitude 43.0950 ± 0.0131
Longitude 12.7950 ± 0.0191
Depth (km) 8 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 311849

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) 2122.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
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) 0.00097
Epicentral distance of station farthest from the epicenter (degree) 0.00372
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 311849
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:52:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.ARV.Z. 1997-11-11T14:56:38.56 10.0 undecidable manual SG 14 0.4107 -0.42 0
--.NRCA.Z. 1997-11-11T14:56:37.13 10.0 undecidable manual SG 138 0.3441 0.33 0.1
--.ARV.Z. 1997-11-11T14:56:32.72 10.0 undecidable manual PG 14 0.4107 0.36 0.2
--.SNTG.Z. 1997-11-11T14:56:31.19 10.0 undecidable manual SG 33 0.1887 -0.05 0.5
--.NRCA.Z. 1997-11-11T14:56:30.96 10.0 negative manual PG 138 0.3441 -0.14 1.7
--.ASS.Z. 1997-11-11T14:56:28.23 10.0 undecidable manual SG 252 0.111 -0.16 0.4
--.SNTG.Z. 1997-11-11T14:56:27.86 10.0 positive manual PG 33 0.1887 -0.03 2.6
--.ASS.Z. 1997-11-11T14:56:26.28 10.0 positive manual PG 252 0.111 0.04 2.6
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