Earthquake with magnitude of Md 2.5 on date 08-10-1997 and time 05:47:54 (UTC) in region 3 km SW Monte Cavallo (MC)

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

  • 08-10-1997 05:47:54 (UTC)
  • 08-10-1997 07:47:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.98, 12.97 at 2 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
Pieve Torina MC 10 1458 1603
Sellano PG 11 1079 2682
Serravalle di Chienti MC 11 1070 3752
Visso MC 11 1107 4859
Fiordimonte MC 12 202 5061
Preci PG 12 724 5785
Muccia MC 13 915 6700
Pievebovigliana MC 13 866 7566
Ussita MC 14 444 8010
Fiastra MC 16 559 8569
Castelsantangelo sul Nera MC 17 281 8850
Acquacanina MC 18 121 8971
Cerreto di Spoleto PG 18 1075 10046
Sefro MC 19 422 10468
Camerino MC 19 6974 17442
Valtopina PG 20 1398 18840

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km E of Foligno (57155 inhabitants)
50 Km E of Perugia (166134 inhabitants)
53 Km NE of Terni (111501 inhabitants)
69 Km NW of Teramo (54892 inhabitants)
78 Km NW of L'Aquila (69753 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
94 Km NE of Viterbo (67173 inhabitants)
96 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
Rev 1000 Md 2.5
ML-VAX 1.9
1997-10-08
05:47:54
42.98 12.97 2 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 293179
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-08 05:47:54 ± 0.287
Latitude 42.98 ± 0.01
Longitude 12.97 ± 0.02
Depth (km) 2 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 293179

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) 1970.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 202
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00219
Epicentral distance of station farthest from the epicenter (degree) 0.00882
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 293179
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:35:55

ML:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 293179
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 Takeoff_angle Residual Weight
--.FB9.Z. 1997-10-08T05:48:21.36 10.0 undecidable manual SG 348 0.0065 0.03 0.8
--.MNS.Z. 1997-10-08T05:48:18.67 10.0 undecidable manual SG 199 0.0057 0.47 0.3
--.ARV.Z. 1997-10-08T05:48:15.40 10.0 undecidable manual SG 357 0.0046 0.75 0.1
--.CRE.Z. 1997-10-08T05:48:14.41 10.0 undecidable manual PG 310 0.0088 -0.31 1
--.FB9.Z. 1997-10-08T05:48:09.93 10.0 undecidable manual PG 348 0.0065 -0.09 1.8
--.MNS.Z. 1997-10-08T05:48:08.20 10.0 undecidable manual PG 199 0.0057 -0.2 1.7
--.ARV.Z. 1997-10-08T05:48:06.30 10.0 undecidable manual PG 357 0.0046 -0.13 2
--.ASS.Z. 1997-10-08T05:48:03.77 10.0 undecidable manual SG 289 0.0022 -0.41 0.4
--.ASS.Z. 1997-10-08T05:48:00.58 10.0 undecidable manual PG 289 0.0022 0.46 0.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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