Earthquake with magnitude of Md 2.3 on date 18-10-1997 and time 07:51:15 (Italy) in region 4 km W Monte Cavallo (MC)

A magnitude Md 2.3 earthquake occured in region: 4 km W Monte Cavallo (MC), on

  • 18-10-1997 05:51:15 (UTC)
  • 18-10-1997 07:51:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.008, 12.951 at 3 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 4 145 145
Serravalle di Chienti MC 7 1070 1215
Pieve Torina MC 9 1458 2673
Muccia MC 11 915 3588
Fiordimonte MC 12 202 3790
Pievebovigliana MC 13 866 4656
Sellano PG 13 1079 5735
Visso MC 14 1107 6842
Sefro MC 16 422 7264
Preci PG 16 724 7988
Ussita MC 17 444 8432
Valtopina PG 17 1398 9830
Fiastra MC 17 559 10389
Camerino MC 17 6974 17363
Nocera Umbra PG 17 5839 23202
Acquacanina MC 18 121 23323
Pioraco MC 19 1134 24457

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km E of Foligno (57155 inhabitants)
47 Km E of Perugia (166134 inhabitants)
56 Km NE of Terni (111501 inhabitants)
73 Km NW of Teramo (54892 inhabitants)
82 Km NW of L'Aquila (69753 inhabitants)
82 Km SW of Ancona (100861 inhabitants)
93 Km S of Fano (60888 inhabitants)
95 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 2.3 1997-10-18
05:51:15
43.008 12.951 3 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 302699
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-18 05:51:15 ± 0.29
Latitude 43.0080 ± 0.0086
Longitude 12.9510 ± 0.0200
Depth (km) 3 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 302699

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) 1887.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 198
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00194
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:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 302699
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:44:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FB9.Z. 1997-10-18T05:51:41.17 10.0 undecidable manual SG 349 0.0062 -0.03 0.7
--.MNS.Z. 1997-10-18T05:51:40.47 10.0 undecidable manual SG 197 0.0058 0.61 0.2
--.ARV.Z. 1997-10-18T05:51:35.31 10.0 undecidable manual SG 359 0.0044 0.71 0.1
--.MNS.Z. 1997-10-18T05:51:29.48 10.0 undecidable manual PG 197 0.0058 -0.16 1.7
--.FB9.Z. 1997-10-18T05:51:29.93 10.0 undecidable manual PG 349 0.0062 -0.48 0.7
--.ARV.Z. 1997-10-18T05:51:26.84 10.0 undecidable manual PG 359 0.0044 0.24 1.7
--.ASS.Z. 1997-10-18T05:51:24.20 10.0 undecidable manual SG 283 0.0019 -0.2 0.7
--.ASS.Z. 1997-10-18T05:51:20.82 10.0 undecidable manual PG 283 0.0019 0.11 2.1
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