Earthquake with magnitude of Md 3.8 on date 07-10-1997 and time 21:56:06 (Italy) in region 3 km SW Monte Cavallo (MC)

A magnitude Md 3.8 earthquake occured in region: 3 km SW Monte Cavallo (MC), on

  • 07-10-1997 19:56:06 (UTC)
  • 07-10-1997 21:56:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.97, 12.97 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 3 145 145
Sellano PG 10 1079 1224
Pieve Torina MC 10 1458 2682
Visso MC 10 1107 3789
Serravalle di Chienti MC 11 1070 4859
Preci PG 12 724 5583
Fiordimonte MC 12 202 5785
Pievebovigliana MC 14 866 6651
Muccia MC 14 915 7566
Ussita MC 14 444 8010
Fiastra MC 17 559 8569
Castelsantangelo sul Nera MC 17 281 8850
Cerreto di Spoleto PG 18 1075 9925
Acquacanina MC 18 121 10046
Sefro MC 20 422 10468
Camerino MC 20 6974 17442

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)
77 Km NW of L'Aquila (69753 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
94 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 3.8
ML-MEDNET 3.7
1997-10-07
19:56:06
42.97 12.97 3 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 292659
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-07 19:56:06 ± 0.278
Latitude 42.97 ± 0.01
Longitude 12.97 ± 0.02
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 292659

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) 1783
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 16
Number of defining phases 16
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) 0.00219
Epicentral distance of station farthest from the epicenter (degree) 0.0119
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

Md:3.8

Field Value
Value 3.8
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 292659
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:35:28

ML:3.7

Field Value
Value 3.7
Uncertainty
Num. used stations
Type of magnitude ML
Reference to an origin 292659
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 10:37:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.RDP.Z. 1997-10-07T19:56:48.30 10.0 undecidable manual SN 188 0.011 -0.08 0.5
--.FB9.Z. 1997-10-07T19:56:33.70 10.0 undecidable manual SG 348 0.0066 0.41 0.3
--.CSNT.Z. 1997-10-07T19:56:31.98 10.0 undecidable manual PN 292 0.0119 0.15 1.1
--.RDP.Z. 1997-10-07T19:56:30.55 10.0 undecidable manual PN 188 0.011 0.02 1.3
--.SFI.Z. 1997-10-07T19:56:30.88 10.0 undecidable manual PN 318 0.0111 0.22 1
--.RMP.Z. 1997-10-07T19:56:29.90 10.0 undecidable manual PN 189 0.0106 0.05 1.3
--.RSM.Z. 1997-10-07T19:56:27.70 10.0 undecidable manual PG 338 0.0092 0.27 1
--.PQ9.Z. 1997-10-07T19:56:26.93 10.0 undecidable manual PG 161 0.009 -0.02 1.4
--.ARV.Z. 1997-10-07T19:56:26.91 10.0 undecidable manual SG 357 0.0047 0.26 0.4
--.CRE.Z. 1997-10-07T19:56:26.80 10.0 undecidable manual PG 311 0.0088 -0.58 0.3
--.FB9.Z. 1997-10-07T19:56:21.50 10.0 undecidable manual PG 348 0.0066 -0.47 0.5
--.AQU.Z. 1997-10-07T19:56:21.81 10.0 undecidable manual PG 152 0.0062 0.55 0.3
--.MNS.Z. 1997-10-07T19:56:19.75 10.0 positive manual PG 199 0.0056 -0.24 2.3
--.ARV.Z. 1997-10-07T19:56:18.30 10.0 positive manual PG 357 0.0047 -0.11 2.9
--.ASS.Z. 1997-10-07T19:56:17.13 10.0 undecidable manual SG 290 0.0022 0.88 0
--.ASS.Z. 1997-10-07T19:56:12.30 10.0 undecidable manual PG 290 0.0022 -0.1 1.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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