Earthquake with magnitude of Md 2.8 on date 09-09-1997 and time 19:01:07 (Italy) in region 7 km W Monte Cavallo (MC)

A magnitude Md 2.8 earthquake occured in region: 7 km W Monte Cavallo (MC), on

  • 09-09-1997 17:01:07 (UTC)
  • 09-09-1997 19:01:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.99, 12.91 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 10 1070 1215
Sellano PG 11 1079 2294
Pieve Torina MC 13 1458 3752
Muccia MC 15 915 4667
Valtopina PG 15 1398 6065
Fiordimonte MC 16 202 6267
Visso MC 16 1107 7374
Preci PG 16 724 8098
Pievebovigliana MC 16 866 8964
Nocera Umbra PG 17 5839 14803
Foligno PG 17 57155 71958
Trevi PG 18 8469 80427
Sefro MC 18 422 80849
Cerreto di Spoleto PG 19 1075 81924
Ussita MC 19 444 82368
Spello PG 20 8645 91013

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km E of Foligno (57155 inhabitants)
45 Km E of Perugia (166134 inhabitants)
52 Km NE of Terni (111501 inhabitants)
74 Km W of Teramo (54892 inhabitants)
81 Km NW of L'Aquila (69753 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
91 Km NE of Viterbo (67173 inhabitants)
96 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
Rev 1000 Md 2.8
ML-VAX 2.2
1997-09-09
17:01:07
42.99 12.91 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 277359
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-09 17:01:07 ± 0.252
Latitude 42.99 ± 0.02
Longitude 12.91 ± 0.03
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 277359

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) 3057.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 147
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
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) 0.01295
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

Md:2.8

Field Value
Value 2.8
Uncertainty
Num. used stations 5
Type of magnitude Md
Reference to an origin 277359
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:22:01

ML:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 3
Type of magnitude ML
Reference to an origin 277359
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
--.RSM.Z. 1997-09-09T17:01:43.70 10.0 undecidable manual SG 340 0.009 0.78 0.3
--.SDI.Z. 1997-09-09T17:01:34.57 10.0 undecidable manual PN 152 0.013 0.62 0.7
--.AQU.Z. 1997-09-09T17:01:33.24 10.0 undecidable manual SG 150 0.0065 -0.35 0.6
--.SFI.Z. 1997-09-09T17:01:31.67 10.0 undecidable manual PN 320 0.0108 1.02 0.4
--.RSM.Z. 1997-09-09T17:01:28.20 10.0 undecidable manual PG 340 0.009 0.49 1
--.MNS.Z. 1997-09-09T17:01:28.88 10.0 undecidable manual SG 195 0.0056 -1.43 0.1
--.PQ9.Z. 1997-09-09T17:01:28.41 10.0 undecidable manual PG 159 0.0092 0.32 1.2
--.AQU.Z. 1997-09-09T17:01:22.57 10.0 undecidable manual PG 150 0.0065 0.07 1.6
--.MNS.Z. 1997-09-09T17:01:20.44 10.0 positive manual PG 195 0.0056 -0.16 3.2
--.ARV.Z. 1997-09-09T17:01:17.30 10.0 positive manual PG 2 0.0045 -1.2 1
--.ASS.Z. 1997-09-09T17:01:14.71 10.0 undecidable manual SG 291 0.0018 -0.71 0.4
--.ASS.Z. 1997-09-09T17:01:12.23 10.0 undecidable manual PG 291 0.0018 0.22 1.5
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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