Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 4.1 on date 16-10-1997 and time 14:00:30 (Italy) in region 6 km SW Serravalle di Chienti (MC)

A magnitude Md 4.1 earthquake occured in region: 6 km SW Serravalle di Chienti (MC), on

  • 16-10-1997 12:00:30 (UTC)
  • 16-10-1997 14:00:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.03, 12.9 at 8 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.

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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 6 1070 1070
Monte Cavallo MC 9 145 1215
Valtopina PG 12 1398 2613
Nocera Umbra PG 12 5839 8452
Pieve Torina MC 13 1458 9910
Muccia MC 13 915 10825
Sefro MC 14 422 11247
Pievebovigliana MC 16 866 12113
Fiordimonte MC 16 202 12315
Sellano PG 16 1079 13394
Fiuminata MC 18 1402 14796
Foligno PG 18 57155 71951
Pioraco MC 18 1134 73085
Camerino MC 18 6974 80059
Spello PG 19 8645 88704
Visso MC 19 1107 89811

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km E of Foligno (57155 inhabitants)
42 Km E of Perugia (166134 inhabitants)
56 Km NE of Terni (111501 inhabitants)
78 Km NW of Teramo (54892 inhabitants)
82 Km SW of Ancona (100861 inhabitants)
86 Km NW of L'Aquila (69753 inhabitants)
91 Km S of Fano (60888 inhabitants)
94 Km NE of Viterbo (67173 inhabitants)
95 Km SE of Arezzo (99543 inhabitants)
98 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
Bulletin
Rev1000 		Md 4.1
ML-MEDNET 4.5 		1997-10-16
12:00:30		 43.03 12.9 8 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 301699
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-10-16 12:00:30 ± 0.304
Latitude 43.03 ± 0.01
Longitude 12.90 ± 0.03
Depth (km) 8 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 301699

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) 2291.6
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 18
Number of defining phases 18
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) 0.00162
Epicentral distance of station farthest from the epicenter (degree) 0.01328
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

Md:4.1

Field Value
Value 4.1
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 301699
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:43:27

ML:4.5

Field Value
Value 4.5
Uncertainty
Num. used stations
Type of magnitude ML
Reference to an origin 301699
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 10:37:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.RDP.Z. 1997-10-16T12:01:12.89 10.0 undecidable manual SN 185 0.0115 0.89 0.1
--.CSNT.Z. 1997-10-16T12:01:10.67 10.0 undecidable manual SN 291 0.0112 -0.61 0.2
--.SFI.Z. 1997-10-16T12:01:08.31 10.0 undecidable manual SN 319 0.0104 -0.79 0.1
--.SDI.Z. 1997-10-16T12:00:57.79 10.0 undecidable manual PN 152 0.0133 0.52 0.7
--.CSNT.Z. 1997-10-16T12:00:54.80 10.0 undecidable manual PN 291 0.0112 0.75 0.4
--.RDP.Z. 1997-10-16T12:00:54.56 10.0 undecidable manual PN 185 0.0115 0.09 1.3
--.RMP.Z. 1997-10-16T12:00:53.73 10.0 undecidable manual PN 186 0.011 -0.04 1.4
--.MNS.Z. 1997-10-16T12:00:53.50 10.0 undecidable manual SG 193 0.006 -0.71 0.2
--.PQ9.Z. 1997-10-16T12:00:52.53 10.0 undecidable manual PN 159 0.0096 0.87 0.3
--.SFI.Z. 1997-10-16T12:00:52.70 10.0 undecidable manual PN 319 0.0104 -0.09 1.4
--.RSM.Z. 1997-10-16T12:00:49.88 10.0 undecidable manual PG 340 0.0085 0.36 1.2
--.ARV.Z. 1997-10-16T12:00:48.50 10.0 undecidable manual SG 3 0.0042 0.64 0.3
--.AQU.Z. 1997-10-16T12:00:45.68 10.0 undecidable manual PG 150 0.0069 -0.49 1
--.MNS.Z. 1997-10-16T12:00:43.70 10.0 negative manual PG 193 0.006 -0.5 1.9
--.FB9.Z. 1997-10-16T12:00:43.86 10.0 undecidable manual PG 352 0.006 -0.34 1.3
--.ARV.Z. 1997-10-16T12:00:40.19 10.0 positive manual PG 3 0.0042 -0.34 2.5
--.ASS.Z. 1997-10-16T12:00:38.50 10.0 undecidable manual SG 279 0.0016 0.46 0.4
--.ASS.Z. 1997-10-16T12:00:34.91 10.0 positive manual PG 279 0.0016 0.05 3.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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