Earthquake with magnitude of Md 2.3 on date 26-09-1997 and time 07:11:27 (UTC) in region 8 km W Monte Cavallo (MC)

A magnitude Md 2.3 earthquake occured in region: 8 km W Monte Cavallo (MC), on

  • 26-09-1997 07:11:27 (UTC)
  • 26-09-1997 09:11:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0080, 12.9090 at 10 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
Monte Cavallo MC 8 145 145
Serravalle di Chienti MC 8 1070 1215
Pieve Torina MC 12 1458 2673
Sellano PG 13 1079 3752
Valtopina PG 14 1398 5150
Muccia MC 14 915 6065
Nocera Umbra PG 15 5839 11904
Fiordimonte MC 15 202 12106
Pievebovigliana MC 16 866 12972
Sefro MC 16 422 13394
Visso MC 17 1107 14501
Foligno PG 18 57155 71656
Preci PG 18 724 72380
Camerino MC 19 6974 79354
Spello PG 19 8645 87999
Trevi PG 20 8469 96468
Pioraco MC 20 1134 97602

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km E of Foligno (57155 inhabitants)
44 Km E of Perugia (166134 inhabitants)
54 Km NE of Terni (111501 inhabitants)
76 Km NW of Teramo (54892 inhabitants)
83 Km NW of L'Aquila (69753 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
93 Km NE of Viterbo (67173 inhabitants)
93 Km S of Fano (60888 inhabitants)
98 Km SE of Arezzo (99543 inhabitants)
100 Km S of Pesaro (94582 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 1.8
1997-09-26
07:11:27
43.008 12.909 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 279089
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-26 07:11:27 ± 0.118
Latitude 43.0080 ± 0.0048
Longitude 12.9090 ± 0.0113
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 279089

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) 1065.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 192
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
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) 0.00170
Epicentral distance of station farthest from the epicenter (degree) 0.00615
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 279089
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:23:34

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 279089
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
--.MNS.Z. 1997-09-26T07:11:49.82 10.0 undecidable manual SG 194 0.6327 -0.08 0.6
--.ARV.Z. 1997-09-26T07:11:45.44 10.0 undecidable manual SG 2 0.4884 0.47 0
--.FB9.Z. 1997-09-26T07:11:41.13 10.0 undecidable manual PG 351 0.6882 -0.06 1.5
--.MNS.Z. 1997-09-26T07:11:40.40 10.0 undecidable manual PG 194 0.6327 0.06 1.6
--.ARV.Z. 1997-09-26T07:11:37.22 10.0 undecidable manual PG 2 0.4884 -0.28 0.6
--.ASS.Z. 1997-09-26T07:11:35.43 10.0 undecidable manual SG 286 0.1887 -0.04 0.8
--.ASS.Z. 1997-09-26T07:11:32.30 10.0 undecidable manual PG 286 0.1887 0.02 1.9
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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