Earthquake with magnitude of Md 2.3 on date 28-09-1997 and time 13:23:02 (Italy) in region 7 km W Monte Cavallo (MC)

A magnitude Md 2.3 earthquake occured in region: 7 km W Monte Cavallo (MC), on

  • 28-09-1997 11:23:02 (UTC)
  • 28-09-1997 13:23:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0130, 12.9180 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 7 145 145
Serravalle di Chienti MC 7 1070 1215
Pieve Torina MC 11 1458 2673
Muccia MC 13 915 3588
Sellano PG 14 1079 4667
Valtopina PG 14 1398 6065
Fiordimonte MC 14 202 6267
Pievebovigliana MC 15 866 7133
Nocera Umbra PG 15 5839 12972
Sefro MC 15 422 13394
Visso MC 17 1107 14501
Preci PG 18 724 15225
Camerino MC 18 6974 22199
Foligno PG 19 57155 79354
Pioraco MC 19 1134 80488
Ussita MC 20 444 80932
Fiastra MC 20 559 81491
Fiuminata MC 20 1402 82893

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km E of Foligno (57155 inhabitants)
44 Km E of Perugia (166134 inhabitants)
55 Km NE of Terni (111501 inhabitants)
75 Km NW of Teramo (54892 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
83 Km NW of L'Aquila (69753 inhabitants)
93 Km S of Fano (60888 inhabitants)
94 Km NE of Viterbo (67173 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 2.4
1997-09-28
11:23:02
43.013 12.918 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 283089
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-28 11:23:02 ± 0.155
Latitude 43.0130 ± 0.0067
Longitude 12.9180 ± 0.0212
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 283089

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) 1879.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 193
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00178
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 283089
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:27:03

ML:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 283089
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. 1997-09-28T11:23:25.30 10.0 undecidable manual SG 195 0.6438 -0.45 0.1
--.ARV.Z. 1997-09-28T11:23:20.20 10.0 undecidable manual SG 1 0.4884 0.04 0.8
--.FB9.Z. 1997-09-28T11:23:16.45 10.0 undecidable manual PG 351 0.6882 -0.02 1.8
--.MNS.Z. 1997-09-28T11:23:16.00 10.0 undecidable manual PG 195 0.6438 0.17 1.4
--.ARV.Z. 1997-09-28T11:23:12.60 10.0 undecidable manual PG 1 0.4884 -0.15 1.8
--.ASS.Z. 1997-09-28T11:23:10.57 10.0 undecidable manual SG 284 0.1998 -0.43 0.2
--.ASS.Z. 1997-09-28T11:23:07.80 10.0 undecidable manual PG 284 0.1998 0.33 0.9
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