Earthquake with magnitude of Md 2.4 on date 09-10-1997 and time 00:31:05 (Italy) in region 7 km W Monte Cavallo (MC)

A magnitude Md 2.4 earthquake occured in region: 7 km W Monte Cavallo (MC), on

  • 08-10-1997 22:31:05 (UTC)
  • 09-10-1997 00:31:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9940, 12.9120 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 7 145 145
Serravalle di Chienti MC 9 1070 1215
Sellano PG 12 1079 2294
Pieve Torina MC 13 1458 3752
Valtopina PG 15 1398 5150
Muccia MC 15 915 6065
Fiordimonte MC 15 202 6267
Visso MC 16 1107 7374
Pievebovigliana MC 16 866 8240
Preci PG 16 724 8964
Nocera Umbra PG 16 5839 14803
Sefro MC 17 422 15225
Foligno PG 17 57155 72380
Trevi PG 19 8469 80849
Ussita MC 19 444 81293
Cerreto di Spoleto PG 19 1075 82368
Spello PG 20 8645 91013

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km E of Foligno (57155 inhabitants)
44 Km E of Perugia (166134 inhabitants)
53 Km NE of Terni (111501 inhabitants)
75 Km NW of Teramo (54892 inhabitants)
82 Km NW of L'Aquila (69753 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
92 Km NE of Viterbo (67173 inhabitants)
95 Km S of Fano (60888 inhabitants)
99 Km SE of Arezzo (99543 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 2.4 1997-10-08
22:31:05
42.994 12.912 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 293889
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-08 22:31:05 ± 0.254
Latitude 42.9940 ± 0.0110
Longitude 12.9120 ± 0.0220
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 293889

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) 2173.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 156
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) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00178
Epicentral distance of station farthest from the epicenter (degree) 0.00931
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 293889
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:36:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MNS.Z. 1997-10-08T22:31:28.88 10.0 undecidable manual SG 195 0.6327 -0.19 0.7
--.PQ9.Z. 1997-10-08T22:31:27.71 10.0 undecidable manual PG 159 1.0323 0.95 0.5
--.ARV.Z. 1997-10-08T22:31:25.53 10.0 undecidable manual SG 2 0.4995 0.52 0.6
--.FB9.Z. 1997-10-08T22:31:19.89 10.0 undecidable manual PG 351 0.6993 -0.74 0.9
--.MNS.Z. 1997-10-08T22:31:18.51 10.0 undecidable manual PG 195 0.6327 -0.77 0.8
--.ARV.Z. 1997-10-08T22:31:16.77 10.0 undecidable manual PG 2 0.4995 -0.16 2
--.ASS.Z. 1997-10-08T22:31:13.85 10.0 undecidable manual SG 289 0.1998 -0.03 0.8
--.ASS.Z. 1997-10-08T22:31:10.93 10.0 undecidable manual PG 289 0.1998 0.41 1.6
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