Earthquake with magnitude of Md 2.6 on date 11-09-1997 and time 18:33:59 (Italy) in region 7 km SW Serravalle di Chienti (MC)

A magnitude Md 2.6 earthquake occured in region: 7 km SW Serravalle di Chienti (MC), on

  • 11-09-1997 16:33:59 (UTC)
  • 11-09-1997 18:33:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.01, 12.92 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
Serravalle di Chienti MC 7 1070 1070
Monte Cavallo MC 7 145 1215
Pieve Torina MC 12 1458 2673
Muccia MC 13 915 3588
Sellano PG 14 1079 4667
Valtopina PG 14 1398 6065
Fiordimonte MC 14 202 6267
Pievebovigliana MC 15 866 7133
Nocera Umbra PG 15 5839 12972
Sefro MC 15 422 13394
Visso MC 17 1107 14501
Preci PG 18 724 15225
Foligno PG 18 57155 72380
Camerino MC 18 6974 79354
Pioraco MC 19 1134 80488
Fiuminata MC 20 1402 81890
Fiastra MC 20 559 82449
Ussita MC 20 444 82893

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km E of Foligno (57155 inhabitants)
44 Km E of Perugia (166134 inhabitants)
55 Km NE of Terni (111501 inhabitants)
75 Km NW of Teramo (54892 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
84 Km NW of L'Aquila (69753 inhabitants)
93 Km S of Fano (60888 inhabitants)
94 Km NE of Viterbo (67173 inhabitants)
98 Km SE of Arezzo (99543 inhabitants)
100 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 2.6
ML-VAX 2.0
1997-09-11
16:33:59
43.01 12.92 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 277579
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1997-09-11 16:33:59 ± 0.366
Latitude 43.01 ± 0.02
Longitude 12.92 ± 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 277579

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) 3350.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 157
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.0106
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:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 277579
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 21:22:13

ML:2

Field Value
Value 2
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 277579
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
--.SFI.Z. 1997-09-11T16:34:39.16 10.0 undecidable manual SN 319 0.0106 -0.14 0.5
--.PQ9.Z. 1997-09-11T16:34:35.68 10.0 undecidable manual SG 159 0.0095 -0.43 0.5
--.SFI.Z. 1997-09-11T16:34:23.80 10.0 undecidable manual PN 319 0.0106 1.37 0.3
--.PQ9.Z. 1997-09-11T16:34:21.46 10.0 undecidable manual PG 159 0.0095 0.87 0.8
--.MNS.Z. 1997-09-11T16:34:21.60 10.0 undecidable manual SG 195 0.0058 -1.62 0.1
--.ARV.Z. 1997-09-11T16:34:16.59 10.0 undecidable manual SG 2 0.0043 -1.24 0.1
--.MNS.Z. 1997-09-11T16:34:12.87 10.0 undecidable manual PG 195 0.0058 -0.29 1.7
--.ARV.Z. 1997-09-11T16:34:09.80 10.0 undecidable manual PG 2 0.0043 -0.24 1.6
--.ASS.Z. 1997-09-11T16:34:06.87 10.0 undecidable manual SG 283 0.0018 -0.38 0.7
--.ASS.Z. 1997-09-11T16:34:04.80 10.0 positive manual PG 283 0.0018 0.14 3.7
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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