Earthquake with magnitude of Md 2.5 on date 08-10-1997 and time 21:55:08 (Italy) in region 3 km W Monte Cavallo (MC)

A magnitude Md 2.5 earthquake occured in region: 3 km W Monte Cavallo (MC), on

  • 08-10-1997 19:55:08 (UTC)
  • 08-10-1997 21:55:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9950, 12.9620 at 4 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 9 1070 1215
Pieve Torina MC 9 1458 2673
Fiordimonte MC 12 202 2875
Muccia MC 12 915 3790
Sellano PG 12 1079 4869
Visso MC 13 1107 5976
Pievebovigliana MC 13 866 6842
Preci PG 14 724 7566
Ussita MC 16 444 8010
Fiastra MC 17 559 8569
Sefro MC 17 422 8991
Acquacanina MC 18 121 9112
Camerino MC 18 6974 16086
Valtopina PG 18 1398 17484
Nocera Umbra PG 19 5839 23323
Castelsantangelo sul Nera MC 19 281 23604
Cerreto di Spoleto PG 20 1075 24679

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km E of Foligno (57155 inhabitants)
48 Km E of Perugia (166134 inhabitants)
55 Km NE of Terni (111501 inhabitants)
71 Km NW of Teramo (54892 inhabitants)
80 Km NW of L'Aquila (69753 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
95 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 2.5
ML-VAX 1.8
1997-10-08
19:55:08
42.995 12.962 4 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 293709
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-08 19:55:08 ± 0.355
Latitude 42.9950 ± 0.0065
Longitude 12.9620 ± 0.0218
Depth (km) 4 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 293709

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) 1913.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 155
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
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) 0.01279
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 293709
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:36:23

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 293709
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
--.SDI.Z. 1997-10-08T19:55:35.98 10.0 undecidable manual PN 153 1.4208 0.34 0.6
--.FB9.Z. 1997-10-08T19:55:34.74 10.0 undecidable manual SG 348 0.6993 -0.12 0.7
--.MNS.Z. 1997-10-08T19:55:33.30 10.0 undecidable manual SG 198 0.6327 0.27 0.5
--.ARV.Z. 1997-10-08T19:55:28.34 10.0 undecidable manual SG 358 0.4995 0.09 0.8
--.FB9.Z. 1997-10-08T19:55:23.76 10.0 undecidable manual PG 348 0.6993 -0.15 1.7
--.MNS.Z. 1997-10-08T19:55:21.96 10.0 undecidable manual PG 198 0.6327 -0.73 0.3
--.ARV.Z. 1997-10-08T19:55:20.10 10.0 undecidable manual PG 358 0.4995 0.01 2
--.ASS.Z. 1997-10-08T19:55:17.94 10.0 undecidable manual SG 286 0.2331 -0.17 0.7
--.ASS.Z. 1997-10-08T19:55:14.46 10.0 undecidable manual PG 286 0.2331 0.23 1.6
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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