Earthquake with magnitude of Md 2.3 on date 07-10-1997 and time 09:54:39 (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

  • 07-10-1997 07:54:39 (UTC)
  • 07-10-1997 09:54:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9750, 12.9210 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
Monte Cavallo MC 7 145 145
Sellano PG 10 1079 1224
Serravalle di Chienti MC 11 1070 2294
Pieve Torina MC 13 1458 3752
Preci PG 14 724 4476
Visso MC 15 1107 5583
Fiordimonte MC 15 202 5785
Muccia MC 16 915 6700
Valtopina PG 16 1398 8098
Pievebovigliana MC 17 866 8964
Cerreto di Spoleto PG 17 1075 10039
Foligno PG 18 57155 67194
Trevi PG 18 8469 75663
Ussita MC 18 444 76107
Nocera Umbra PG 19 5839 81946
Sefro MC 19 422 82368

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km E of Foligno (57155 inhabitants)
46 Km E of Perugia (166134 inhabitants)
51 Km NE of Terni (111501 inhabitants)
73 Km W of Teramo (54892 inhabitants)
80 Km NW of L'Aquila (69753 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
91 Km NE of Viterbo (67173 inhabitants)
97 Km S of Fano (60888 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
1997-10-07
07:54:39
42.975 12.921 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 292169
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-07 07:54:39 ± 0.206
Latitude 42.9750 ± 0.0078
Longitude 12.9210 ± 0.0179
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 292169

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) 1699.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 194
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) 0.00186
Epicentral distance of station farthest from the epicenter (degree) 0.00648
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 3
Type of magnitude Md
Reference to an origin 292169
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:35:02

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 292169
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. 1997-10-07T07:55:05.41 10.0 undecidable manual SG 351 0.7215 -0.67 0.2
--.MNS.Z. 1997-10-07T07:55:02.95 10.0 undecidable manual SG 196 0.6105 0.32 0.6
--.ARV.Z. 1997-10-07T07:54:59.94 10.0 undecidable manual SG 1 0.5217 0.3 0.7
--.FB9.Z. 1997-10-07T07:54:55.68 10.0 undecidable manual PG 351 0.7215 0.63 0.6
--.MNS.Z. 1997-10-07T07:54:52.79 10.0 undecidable manual PG 196 0.6105 -0.26 1.7
--.ARV.Z. 1997-10-07T07:54:50.93 10.0 undecidable manual PG 1 0.5217 -0.4 1.4
--.ASS.Z. 1997-10-07T07:54:48.20 10.0 undecidable manual SG 293 0.2109 -0.23 0.8
--.ASS.Z. 1997-10-07T07:54:45.00 10.0 undecidable manual PG 293 0.2109 0.15 2.1
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download