Earthquake with magnitude of Md 3.1 on date 04-10-1997 and time 09:41:06 (Italy) in region 7 km SW Serravalle di Chienti (MC)

A magnitude Md 3.1 earthquake occured in region: 7 km SW Serravalle di Chienti (MC), on

  • 04-10-1997 07:41:06 (UTC)
  • 04-10-1997 09:41:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.02, 12.92 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
Serravalle di Chienti MC 7 1070 1070
Monte Cavallo MC 7 145 1215
Pieve Torina MC 11 1458 2673
Muccia MC 12 915 3588
Fiordimonte MC 14 202 3790
Sellano PG 14 1079 4869
Pievebovigliana MC 14 866 5735
Valtopina PG 15 1398 7133
Sefro MC 15 422 7555
Nocera Umbra PG 15 5839 13394
Visso MC 17 1107 14501
Camerino MC 18 6974 21475
Preci PG 18 724 22199
Pioraco MC 19 1134 23333
Fiastra MC 19 559 23892
Foligno PG 19 57155 81047
Fiuminata MC 19 1402 82449
Ussita MC 19 444 82893

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km E of Foligno (57155 inhabitants)
45 Km E of Perugia (166134 inhabitants)
55 Km NE of Terni (111501 inhabitants)
75 Km NW of Teramo (54892 inhabitants)
82 Km SW of Ancona (100861 inhabitants)
84 Km NW of L'Aquila (69753 inhabitants)
92 Km S of Fano (60888 inhabitants)
94 Km NE of Viterbo (67173 inhabitants)
98 Km SE of Arezzo (99543 inhabitants)
99 Km S of Pesaro (94582 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 3.1
ML-VAX 2.2
1997-10-04
07:41:06
43.02 12.92 3 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 288989
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-04 07:41:06 ± 0.185
Latitude 43.02 ± 0.01
Longitude 12.92 ± 0.01
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 288989

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) 1362.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 150
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00178
Epicentral distance of station farthest from the epicenter (degree) 0.01781
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

Md:3.1

Field Value
Value 3.1
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 288989
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:32:14

ML:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 6
Type of magnitude ML
Reference to an origin 288989
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
--.BDI.Z. 1997-10-04T07:41:40.99 10.0 undecidable manual PN 302 0.0178 -0.09 0.8
--.MNS.Z. 1997-10-04T07:41:31.50 10.0 undecidable manual SG 195 0.0059 0.01 0.6
--.CSNT.Z. 1997-10-04T07:41:31.00 10.0 undecidable manual PN 291 0.0114 -0.33 0.8
--.SFI.Z. 1997-10-04T07:41:30.34 10.0 undecidable manual PN 318 0.0106 0.27 0.9
--.RMP.Z. 1997-10-04T07:41:30.94 10.0 undecidable manual PN 187 0.0109 0.38 0.7
--.PQ9.Z. 1997-10-04T07:41:28.48 10.0 undecidable manual PG 160 0.0095 0.35 0.8
--.RSM.Z. 1997-10-04T07:41:27.19 10.0 undecidable manual PG 339 0.0087 0.56 0.4
--.CRE.Z. 1997-10-04T07:41:25.50 10.0 undecidable manual PG 310 0.0083 -0.3 1
--.ARV.Z. 1997-10-04T07:41:25.40 10.0 undecidable manual SG 1 0.0043 -0.25 0.5
--.AQU.Z. 1997-10-04T07:41:22.55 10.0 positive manual PG 151 0.0067 0.07 2.7
--.MNS.Z. 1997-10-04T07:41:19.74 10.0 undecidable manual PG 195 0.0059 -1.01 0
--.ARV.Z. 1997-10-04T07:41:17.22 10.0 positive manual PG 1 0.0043 -0.21 2.4
--.ASS.Z. 1997-10-04T07:41:14.41 10.0 undecidable manual SG 282 0.0018 -0.21 0.5
--.ASS.Z. 1997-10-04T07:41:11.60 10.0 positive manual PG 282 0.0018 0.33 1.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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