Earthquake with magnitude of Md 2.4 on date 30-09-1997 and time 11:45:01 (Italy) in region 5 km SW Monte Cavallo (MC)

A magnitude Md 2.4 earthquake occured in region: 5 km SW Monte Cavallo (MC), on

  • 30-09-1997 09:45:01 (UTC)
  • 30-09-1997 11:45:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9720, 12.9480 at 10 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 5 145 145
Sellano PG 9 1079 1224
Serravalle di Chienti MC 11 1070 2294
Pieve Torina MC 12 1458 3752
Visso MC 12 1107 4859
Preci PG 13 724 5583
Fiordimonte MC 14 202 5785
Muccia MC 15 915 6700
Pievebovigliana MC 15 866 7566
Ussita MC 16 444 8010
Cerreto di Spoleto PG 17 1075 9085
Valtopina PG 19 1398 10483
Fiastra MC 19 559 11042
Castelsantangelo sul Nera MC 19 281 11323
Trevi PG 19 8469 19792
Sefro MC 20 422 20214
Acquacanina MC 20 121 20335
Foligno PG 20 57155 77490

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km E of Foligno (57155 inhabitants)
48 Km E of Perugia (166134 inhabitants)
52 Km NE of Terni (111501 inhabitants)
71 Km W of Teramo (54892 inhabitants)
78 Km NW of L'Aquila (69753 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
92 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 2.4
ML-VAX 2.1
1997-09-30
09:45:01
42.972 12.948 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 285489
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-30 09:45:01 ± 0.265
Latitude 42.9720 ± 0.0095
Longitude 12.9480 ± 0.0316
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 285489

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) 2782.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 198
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00202
Epicentral distance of station farthest from the epicenter (degree) 0.00874
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:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 285489
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:29:09

ML:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 285489
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
--.CRE.Z. 1997-09-30T09:45:35.40 10.0 undecidable manual SG 311 0.9657 0.53 0.5
--.MNS.Z. 1997-09-30T09:45:23.80 10.0 undecidable manual SG 198 0.6105 0.25 0.7
--.CRE.Z. 1997-09-30T09:45:22.60 10.0 undecidable manual PG 311 0.9657 1.18 0.2
--.ARV.Z. 1997-09-30T09:45:20.64 10.0 undecidable manual SG 359 0.5217 0.07 0.8
--.FB9.Z. 1997-09-30T09:45:16.56 10.0 undecidable manual PG 350 0.7326 0.16 1.8
--.MNS.Z. 1997-09-30T09:45:14.30 10.0 undecidable manual PG 198 0.6105 -0.04 2
--.ARV.Z. 1997-09-30T09:45:12.22 10.0 undecidable manual PG 359 0.5217 -0.4 1.4
--.ASS.Z. 1997-09-30T09:45:10.50 10.0 undecidable manual SG 292 0.222 -0.68 0.3
--.ASS.Z. 1997-09-30T09:45:06.74 10.0 undecidable manual PG 292 0.222 -0.46 1.2
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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