Earthquake with magnitude of Md 2.2 on date 26-09-1997 and time 13:52:48 (Italy) in region 6 km SE Nocera Umbra (PG)

A magnitude Md 2.2 earthquake occured in region: 6 km SE Nocera Umbra (PG), on

  • 26-09-1997 11:52:48 (UTC)
  • 26-09-1997 13:52:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.07, 12.84 at 2 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 7 1398 7237
Serravalle di Chienti MC 9 1070 8307
Sefro MC 12 422 8729
Fiuminata MC 15 1402 10131
Monte Cavallo MC 15 145 10276
Spello PG 16 8645 18921
Muccia MC 17 915 19836
Pioraco MC 17 1134 20970
Foligno PG 17 57155 78125
Pieve Torina MC 17 1458 79583
Assisi PG 18 28299 107882
Gualdo Tadino PG 19 15208 123090
Pievebovigliana MC 20 866 123956
Camerino MC 20 6974 130930

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km NE of Foligno (57155 inhabitants)
37 Km E of Perugia (166134 inhabitants)
59 Km N of Terni (111501 inhabitants)
82 Km SW of Ancona (100861 inhabitants)
84 Km NW of Teramo (54892 inhabitants)
87 Km S of Fano (60888 inhabitants)
89 Km E of Arezzo (99543 inhabitants)
92 Km NW of L'Aquila (69753 inhabitants)
94 Km S of Pesaro (94582 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 2.2 1997-09-26
11:52:48
43.07 12.84 2 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 279519
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-26 11:52:48 ± 0.249
Latitude 43.07 ± 0.01
Longitude 12.84 ± 0.02
Depth (km) 2 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 279519

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) 2179
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 180
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00121
Epicentral distance of station farthest from the epicenter (degree) 0.00623
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:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 279519
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:23:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.MNS.Z. 1997-09-26T11:53:13.73 10.0 undecidable manual SG 189 0.0062 -0.36 0.5
--.FB9.Z. 1997-09-26T11:53:11.84 10.0 undecidable manual SG 355 0.0056 0.06 0.8
--.ARV.Z. 1997-09-26T11:53:05.58 10.0 undecidable manual SG 9 0.0039 0.43 0.5
--.MNS.Z. 1997-09-26T11:53:03.59 10.0 undecidable manual PG 189 0.0062 0.36 1.2
--.FB9.Z. 1997-09-26T11:53:01.78 10.0 undecidable manual PG 355 0.0056 -0.11 1.9
--.ARV.Z. 1997-09-26T11:52:57.89 10.0 undecidable manual PG 9 0.0039 -0.17 2.1
--.ASS.Z. 1997-09-26T11:52:54.50 10.0 undecidable manual SG 266 0.0012 0.67 0.2
--.ASS.Z. 1997-09-26T11:52:50.98 10.0 undecidable manual PG 266 0.0012 -0.55 0.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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