Earthquake with magnitude of Md 2.3 on date 12-10-1997 and time 23:11:05 (Italy) in region 3 km NW Monte Cavallo (MC)

A magnitude Md 2.3 earthquake occured in region: 3 km NW Monte Cavallo (MC), on

  • 12-10-1997 21:11:05 (UTC)
  • 12-10-1997 23:11:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0080, 12.9710 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 3 145 145
Serravalle di Chienti MC 7 1070 1215
Pieve Torina MC 8 1458 2673
Muccia MC 10 915 3588
Fiordimonte MC 10 202 3790
Pievebovigliana MC 11 866 4656
Visso MC 13 1107 5763
Sellano PG 14 1079 6842
Preci PG 15 724 7566
Ussita MC 15 444 8010
Fiastra MC 15 559 8569
Sefro MC 16 422 8991
Camerino MC 16 6974 15965
Acquacanina MC 17 121 16086
Valtopina PG 19 1398 17484
Nocera Umbra PG 19 5839 23323
Pioraco MC 19 1134 24457
Castelsantangelo sul Nera MC 20 281 24738

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km E of Foligno (57155 inhabitants)
49 Km E of Perugia (166134 inhabitants)
56 Km NE of Terni (111501 inhabitants)
71 Km NW of Teramo (54892 inhabitants)
81 Km NW of L'Aquila (69753 inhabitants)
81 Km SW of Ancona (100861 inhabitants)
93 Km S of Fano (60888 inhabitants)
96 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
ML-VAX 1.6
1997-10-12
21:11:05
43.008 12.971 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 296819
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-12 21:11:05 ± 0.164
Latitude 43.0080 ± 0.0060
Longitude 12.9710 ± 0.0133
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 296819

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) 1272.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 201
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) 0.00210
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
Magnitudes information

Md:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 296819
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:39:08

ML:1.6

Field Value
Value 1.6
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 296819
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. 1997-10-12T21:11:31.43 10.0 undecidable manual SG 348 0.6882 0.18 0.7
--.MNS.Z. 1997-10-12T21:11:30.11 10.0 undecidable manual SG 198 0.6549 0.14 0.7
--.ARV.Z. 1997-10-12T21:11:24.90 10.0 undecidable manual SG 357 0.4884 -0.51 0.1
--.FB9.Z. 1997-10-12T21:11:21.23 10.0 undecidable manual PG 348 0.6882 0.66 0.3
--.MNS.Z. 1997-10-12T21:11:19.77 10.0 undecidable manual PG 198 0.6549 -0.05 1.7
--.ARV.Z. 1997-10-12T21:11:16.59 10.0 undecidable manual PG 357 0.4884 -0.13 1.6
--.ASS.Z. 1997-10-12T21:11:15.30 10.0 undecidable manual SG 283 0.2331 -0.04 0.8
--.ASS.Z. 1997-10-12T21:11:11.37 10.0 undecidable manual PG 283 0.2331 -0.01 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