Earthquake with magnitude of Md 3.7 on date 26-09-1997 and time 15:30:50 (Italy) in region 3 km E Monte Cavallo (MC)

A magnitude Md 3.7 earthquake occured in region: 3 km E Monte Cavallo (MC), on

  • 26-09-1997 13:30:50 (UTC)
  • 26-09-1997 15:30:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43, 13.04 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 3 145 145
Pieve Torina MC 5 1458 1603
Fiordimonte MC 6 202 1805
Pievebovigliana MC 8 866 2671
Visso MC 9 1107 3778
Muccia MC 9 915 4693
Ussita MC 10 444 5137
Serravalle di Chienti MC 11 1070 6207
Fiastra MC 11 559 6766
Acquacanina MC 12 121 6887
Preci PG 13 724 7611
Castelsantangelo sul Nera MC 15 281 7892
Sellano PG 15 1079 8971
Camerino MC 15 6974 15945
Bolognola MC 16 142 16087
Sefro MC 18 422 16509

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km E of Foligno (57155 inhabitants)
54 Km E of Perugia (166134 inhabitants)
58 Km NE of Terni (111501 inhabitants)
66 Km NW of Teramo (54892 inhabitants)
78 Km NW of L'Aquila (69753 inhabitants)
79 Km SW of Ancona (100861 inhabitants)
94 Km S of Fano (60888 inhabitants)
100 Km NE of Viterbo (67173 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 3.7
ML-VAX 3.7
1997-09-26
13:30:50
43 13.04 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 279759
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-26 13:30:50 ± 0.171
Latitude 43.00 ± 0.01
Longitude 13.04 ± 0.02
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 279759

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) 1962.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 163
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
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) 0.00251
Epicentral distance of station farthest from the epicenter (degree) 0.01854
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

Md:3.7

Field Value
Value 3.7
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 279759
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:24:09

ML:3.7

Field Value
Value 3.7
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 279759
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
--.SDI.Z. 1997-09-26T13:31:37.00 10.0 undecidable manual SN 155 0.0126 0.73 0.3
--.SFI.Z. 1997-09-26T13:31:33.11 10.0 undecidable manual SN 316 0.0112 0.69 0.3
--.RSM.Z. 1997-09-26T13:31:27.29 10.0 undecidable manual SG 335 0.0091 0.77 0.3
--.BDI.Z. 1997-09-26T13:31:26.50 10.0 undecidable manual PN 301 0.0185 0.03 1.2
--.CRE.Z. 1997-09-26T13:31:26.11 10.0 undecidable manual SG 308 0.009 0.15 0.7
--.PQ9.Z. 1997-09-26T13:31:25.95 10.0 undecidable manual SG 164 0.0091 -0.33 0.6
--.AQU.Z. 1997-09-26T13:31:16.00 10.0 undecidable manual SG 157 0.0062 -0.19 0.7
--.CSNT.Z. 1997-09-26T13:31:16.50 10.0 undecidable manual PN 290 0.0121 -0.27 1.4
--.MNS.Z. 1997-09-26T13:31:15.26 10.0 undecidable manual SG 202 0.006 0.07 0.7
--.SDI.Z. 1997-09-26T13:31:15.43 10.0 undecidable manual PN 155 0.0126 -1.65 0
--.RDP.Z. 1997-09-26T13:31:15.39 10.0 undecidable manual PN 190 0.0113 0.34 1.4
--.SFI.Z. 1997-09-26T13:31:14.85 10.0 undecidable manual PN 316 0.0112 -0.01 1.6
--.RMP.Z. 1997-09-26T13:31:14.44 10.0 undecidable manual PN 191 0.0108 0.07 1.6
--.PQ9.Z. 1997-09-26T13:31:11.37 10.0 undecidable manual PG 164 0.0091 0.05 1.8
--.RSM.Z. 1997-09-26T13:31:11.70 10.0 undecidable manual PG 335 0.0091 0.25 1.6
--.CRE.Z. 1997-09-26T13:31:10.28 10.0 undecidable manual PG 308 0.009 -0.85 0.7
--.ARV.Z. 1997-09-26T13:31:09.72 10.0 undecidable manual SG 352 0.0045 -0.18 0.7
--.AQU.Z. 1997-09-26T13:31:06.29 10.0 undecidable manual PG 157 0.0062 0.8 0.7
--.MNS.Z. 1997-09-26T13:31:04.72 10.0 positive manual PG 202 0.006 -0.2 3.4
--.ASS.Z. 1997-09-26T13:31:02.59 10.0 undecidable manual SG 282 0.0025 0.5 0.5
--.ARV.Z. 1997-09-26T13:31:01.30 10.0 undecidable manual PG 352 0.0045 -0.56 1.2
--.ASS.Z. 1997-09-26T13:30:56.49 10.0 undecidable manual PG 282 0.0025 -0.86 0.6
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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